55 results on '"Bachmann, Alexander"'
Search Results
2. Systematic Review of the Performance of Noninvasive Tests in Diagnosing Bladder Outlet Obstruction in Men with Lower Urinary Tract Symptoms.
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Malde S, Nambiar AK, Umbach R, Lam TB, Bach T, Bachmann A, Drake MJ, Gacci M, Gratzke C, Madersbacher S, Mamoulakis C, Tikkinen KAO, and Gravas S
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- Humans, Lower Urinary Tract Symptoms etiology, Male, Pressure, Prostate diagnostic imaging, Sensitivity and Specificity, Spectroscopy, Near-Infrared, Ultrasonography, Ultrasonography, Doppler, Urinary Bladder diagnostic imaging, Urinary Bladder Neck Obstruction complications, Urinary Bladder Neck Obstruction diagnosis, Urodynamics, Lower Urinary Tract Symptoms diagnosis, Urinary Bladder Neck Obstruction diagnostic imaging
- Abstract
Context: Several noninvasive tests have been developed for diagnosing bladder outlet obstruction (BOO) in men to avoid the burden and morbidity associated with invasive urodynamics. The diagnostic accuracy of these tests, however, remains uncertain., Objective: To systematically review available evidence regarding the diagnostic accuracy of noninvasive tests in diagnosing BOO in men with lower urinary tract symptoms (LUTS) using a pressure-flow study as the reference standard., Evidence Acquisition: The EMBASE, MEDLINE, Cochrane Database of Systematic Reviews, Cochrane Central, Google Scholar, and WHO International Clinical Trials Registry Platform Search Portal databases were searched up to May 18, 2016. All studies reporting diagnostic accuracy for noninvasive tests for BOO or detrusor underactivity in men with LUTS compared to pressure-flow studies were included. Two reviewers independently screened all articles, searched the reference lists of retrieved articles, and performed the data extraction. The quality of evidence and risk of bias were assessed using the QUADAS-2 tool., Evidence Synthesis: The search yielded 2774 potentially relevant reports. After screening titles and abstracts, 53 reports were retrieved for full-text screening, of which 42 (recruiting a total of 4444 patients) were eligible. Overall, the results were predominantly based on findings from nonrandomised experimental studies and, within the limits of such study designs, the quality of evidence was typically moderate across the literature. Differences in noninvasive test threshold values and variations in the urodynamic definition of BOO between studies limited the comparability of the data. Detrusor wall thickness (median sensitivity 82%, specificity 92%), near-infrared spectroscopy (median sensitivity 85%, specificity 87%), and the penile cuff test (median sensitivity 88%, specificity 75%) were all found to have high sensitivity and specificity in diagnosing BOO. Uroflowmetry with a maximum flow rate of <10ml/s was reported to have lower median sensitivity and specificity of 68% and 70%, respectively. Intravesical prostatic protrusion of >10mm was reported to have similar diagnostic accuracy, with median sensitivity of 68% and specificity of 75%., Conclusions: According to the literature, a number of noninvasive tests have high sensitivity and specificity in diagnosing BOO in men. However, although the majority of studies have a low overall risk of bias, the available evidence is limited by heterogeneity. While several tests have shown promising results regarding noninvasive assessment of BOO, invasive urodynamics remain the gold standard., Patient Summary: Urodynamics is an accurate but potentially uncomfortable test for patients in diagnosing bladder problems such as obstruction. We performed a thorough and comprehensive review of the literature to determine if there were less uncomfortable but equally effective alternatives to urodynamics for diagnosing bladder problems. We found that some simple tests appear to be promising, although they are not as accurate. Further research is needed before these tests are routinely used in place of urodynamics., (Copyright © 2016 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
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- 2017
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3. Laser Vaporization of the Prostate With the 180-W XPS-Greenlight Laser in Patients With Ongoing Platelet Aggregation Inhibition and Oral Anticoagulation.
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Lee DJ, Rieken M, Halpern J, Zhao F, Pueschel H, Chughtai B, Kaplan SA, Lee RK, Bachmann A, and Te AE
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- Administration, Oral, Aged, Aged, 80 and over, Humans, Male, Middle Aged, Prostatic Hyperplasia complications, Retrospective Studies, Treatment Outcome, Anticoagulants administration & dosage, Intraoperative Complications epidemiology, Laser Therapy, Platelet Aggregation Inhibitors therapeutic use, Postoperative Complications epidemiology, Prostatectomy methods, Prostatic Hyperplasia surgery
- Abstract
Objective: To characterize the safety and efficacy of the 180-W XPS-Greenlight laser in patients on systemic anticoagulation., Materials and Methods: A retrospective analysis of 384 patients who underwent photoselective vaporization of the prostate with the 180-W XPS-laser between 2010 and 2013 at two centers in the United States and Switzerland was performed. The primary outcome was the intraoperative and postoperative complication rates for those on anticoagulation undergoing photoselective vaporization of the prostate. The secondary outcome was International Prostate Symptom Scores, postvoid residual, maximum flow rate, and prostate-specific antigen levels., Results: Of 384 patients, aspirin, clopidogrel, and warfarin were used in 146 (38%), 34 (8.9%), and 57 (14.8%) patients, respectively. Single-drug, two-drug, and three-drug combinations were used in 142 (35.5%), 37 (9.3%), and 7 (1.7%) of the cases. Median lasing time (39 min vs 36 min; P = .99) and number of fibers used (1.0 vs 1.0; P = .63) were comparable between patients on vs off systemic anticoagulation. Postoperatively, urinary symptoms (International Prostate Symptom Score, quality of life) and objective voiding parameters (maximum flow rate, postvoid residual) improved in both groups of patients. During a maximum follow-up of 2 years, patients on vs off systemic anticoagulation did not show any significant differences in the rate of postoperative urinary tract infection (3.8% vs 5.1%; P = .71), retention (5.1% vs 5.9%; P = .71), urethral stricture (1.5% vs none, P = .05), and reoperation (2.2% vs 1.5%; P = .49). The primary limitation is the retrospective nature of the study., Conclusion: Photovaporization of the prostate with the 180-W XPS-laser is a safe and effective minimal-invasive treatment option for patients on systemic anticoagulation., (Copyright © 2016 Elsevier Inc. All rights reserved.)
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- 2016
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4. Urothelial Cancer in Renal Transplant Recipients: Incidence, Risk Factors, and Oncological Outcome.
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Ardelt PU, Rieken M, Ebbing J, Bonkat G, Vlajnic T, Bubendorf L, Grobholz R, Steiger J, Bachmann A, and Burkhalter F
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- Female, Humans, Incidence, Male, Retrospective Studies, Risk Factors, Kidney Transplantation, Postoperative Complications epidemiology, Urologic Neoplasms epidemiology, Urothelium
- Abstract
Objective: To evaluate the incidence and risk factors for urothelial cancer (UC) as well as the oncological outcome and allograft function in renal transplant recipients., Subjects/patients: We conducted a retrospective analysis of 1855 consecutive patients undergoing renal transplantation (TX) between February 1982 and May 2014 at a single center. UC incidence, overall and cancer-specific survival, recurrence and progression rates, risk factors for UC, and renal function were determined. Fisher's exact test and log-rank Mantel-Cox test were used as appropriate., Results: In renal transplant recipients, incidence of de novo UC was 1.35% (25/1855). Deceased donor transplantation (P = .002), increased age at transplantation (P = .011), and analgesic abuse (P = .005) were significant risk factors for the development of UC post-TX. Progression rate and recurrence rate were doubled for post-TX-UC but stable for patients with pre-TX-UC compared with the general population. Analgesic abuse was associated with worse cancer specific and overall survival in post-TX patients. The overall survival status was significantly lower for post-TX patients at a median of 34 months vs 222 months in control patients. Adjuvant treatment was scarcely used. UC had no significant influence on graft function., Conclusion: A higher incidence of UC was identified in renal transplant recipients compared with that for the general population. These observations justify screening for UC in renal transplant patients, especially considering that in a large proportion, a tentative diagnosis was possible with noninvasive urine analysis. Prudent adjuvant treatment for UC should be used. Limitations of this study were the retrospective design and the single-center experience., (Copyright © 2016 Elsevier Inc. All rights reserved.)
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- 2016
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5. Reply from Authors re: Jean-Nicolas Cornu, Stephan Madersbacher. Greenlight Photovaporisation of the Prostate: Now Ready for Prime Time. Eur Urol 2016;69:103-4.
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Thomas JA and Bachmann A
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- Humans, Male, Cornus, Prostatic Neoplasms
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- 2016
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6. A Multicenter Randomized Noninferiority Trial Comparing GreenLight-XPS Laser Vaporization of the Prostate and Transurethral Resection of the Prostate for the Treatment of Benign Prostatic Obstruction: Two-yr Outcomes of the GOLIATH Study.
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Thomas JA, Tubaro A, Barber N, d'Ancona F, Muir G, Witzsch U, Grimm MO, Benejam J, Stolzenburg JU, Riddick A, Pahernik S, Roelink H, Ameye F, Saussine C, Bruyère F, Loidl W, Larner T, Gogoi NK, Hindley R, Muschter R, Thorpe A, Shrotri N, Graham S, Hamann M, Miller K, Schostak M, Capitán C, Knispel H, and Bachmann A
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- Follow-Up Studies, Humans, Lasers, Solid-State adverse effects, Male, Organ Size, Patient Satisfaction, Prospective Studies, Prostate-Specific Antigen blood, Prostatic Hyperplasia blood, Prostatic Hyperplasia pathology, Quality of Life, Severity of Illness Index, Surveys and Questionnaires, Transurethral Resection of Prostate adverse effects, Treatment Outcome, Urinary Incontinence etiology, Lasers, Solid-State therapeutic use, Prostate pathology, Prostatic Hyperplasia surgery, Transurethral Resection of Prostate methods
- Abstract
Background: The GOLIATH study is a 2-yr trial comparing transurethral resection of prostate (TURP) to photoselective vaporization with the GreenLight XPS Laser System (GL-XPS) for the treatment of benign prostatic obstruction (BPO). Noninferiority of GL-XPS to TURP was demonstrated based on a 6-mo follow-up from the study., Objective: To determine whether treatment effects observed at 6 mo between GL-XPS and TURP was maintained at the 2-yr follow-up., Design, Setting, and Participants: Prospective randomized controlled trial at 29 centers in nine European countries involving 281 patients with BPO., Intervention: Photoselective vaporization using the 180-W GreenLight GL-XPS or conventional (monopolar or bipolar) TURP., Outcome Measurements and Statistical Analysis: The primary outcome was the International Prostate Symptom Score for which a margin of three was used to evaluate the noninferiority of GL-XPS. Secondary outcomes included Qmax, prostate volume, prostate specific antigen, Overactive Bladder Questionnaire Short Form, International Consultation on Incontinence Questionnaire Short Form, occurrence of surgical retreatment, and freedom from complications., Results and Limitations: One hundred and thirty-six patients were treated using GL-XPS and 133 using TURP. Noninferiority of GL-XPS on International Prostate Symptom Score, Qmax, and freedom from complications was demonstrated at 6-mo and was sustained at 2-yr. The proportion of patients complication-free through 24-mo was 83.6% GL-XPS versus 78.9% TURP. Reductions in prostate volume and prostate specific antigen were similar in both arms and sustained over the course of the trial. Compared with the 1(st) yr of the study, very few adverse events or retreatments were reported in either arm. Treatment differences in the Overactive Bladder Questionnaire Short Form observed at 12-mo were not statistically significant at 24-mo. A limitation was that patients and treating physicians were not blinded to the therapy., Conclusions: Twenty-four-mo follow-up data demonstrated that GL-XPS provides a durable surgical option for the treatment of BPO that exhibits efficacy and safety outcomes similar to TURP., Patient Summary: The long-term effectiveness and safety of GLP-XLS was similar to conventional TURP for the treatment of prostate enlargement., (Copyright © 2015 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
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- 2016
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7. Association of Cigarette Smoking and Smoking Cessation with Biochemical Recurrence of Prostate Cancer in Patients Treated with Radical Prostatectomy.
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Rieken M, Shariat SF, Kluth LA, Fajkovic H, Rink M, Karakiewicz PI, Seitz C, Briganti A, Rouprêt M, Loidl W, Trinh QD, Bachmann A, and Pourmand G
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- Humans, Male, Middle Aged, Neoplasm Recurrence, Local epidemiology, Prostatic Neoplasms epidemiology, Retrospective Studies, Risk Factors, Neoplasm Recurrence, Local etiology, Prostatectomy methods, Prostatic Neoplasms etiology, Prostatic Neoplasms surgery, Smoking adverse effects, Smoking Cessation
- Abstract
Background: Cigarette smoking seems to be associated with prostate cancer (PCa) incidence and mortality., Objective: To elucidate the association between pretreatment smoking status, cumulative smoking exposure, and time since smoking cessation and the risk of biochemical recurrence (BCR) of PCa in patients treated with radical prostatectomy (RP)., Design, Setting, and Participants: Retrospective analysis of 6538 patients with pathologically node-negative PCa treated with RP between 2000 and 2011. Clinicopathologic and smoking variables, including smoking status, number of cigarettes per day (CPD), duration in years, and time since smoking cessation were collected., Intervention: RP without neoadjuvant therapy., Outcome Measurements and Statistical Analysis: Univariable and multivariable Cox regression analyses assessed the association between smoking and risk of PCa BCR., Results and Limitations: Of 6538 patients, 2238 (34%), 2086 (32%), and 2214 (34%) were never, former, and current smokers, respectively. Median follow-up for patients not experiencing BCR was 28 mo (interquartile range 14-42). RP Gleason score (p=0.3), extracapsular extension (p=0.2), seminal vesicle invasion (p=0.8), and positive surgical margins (p=0.9) were comparable among the three groups. In multivariable Cox regression analysis, former smokers (hazard ratio [HR] 1.63, 95% confidence interval [CI] 1.30-2.04; p<0.001) and current smokers (HR 1.80, 95% CI 1.45-2.24; p<0.001) had a higher risk of PCa BCR compared with non-smokers. Smoking cessation for ≥10 yr mitigated the risk of BCR in multivariable analyses (HR 0.96, 95% CI 0.68-1.37; p=0.84). In multivariable analysis, no significant association between cumulative smoking exposure and risk of BCR could be detected. Limitations of the study include the retrospective design and potential recall bias regarding smoking history., Conclusion: Smoking seems to be associated with a higher risk of PCa BCR after RP. The effects of smoking appear to be mitigated by ≥10 yr of cessation. Smokers should be counseled regarding the detrimental effects of smoking on PCa prognosis., Patient Summary: We investigated the effect of smoking on the risk of prostate cancer recurrence in patients with treated with surgery. We found that former smokers and current smokers were at higher risk of cancer recurrence compared to patients who never smoked; the detrimental effect of smoking was mitigated after 10 yr or more of smoking cessation. We conclude that smokers should be counseled regarding the detrimental effects on prostate cancer outcomes., (Copyright © 2015 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
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- 2015
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8. EAU Guidelines on the Assessment of Non-neurogenic Male Lower Urinary Tract Symptoms including Benign Prostatic Obstruction.
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Gratzke C, Bachmann A, Descazeaud A, Drake MJ, Madersbacher S, Mamoulakis C, Oelke M, Tikkinen KAO, and Gravas S
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- Adult, Aged, Aged, 80 and over, Cystoscopy methods, Diagnosis, Differential, Europe, Evidence-Based Practice, Humans, Lower Urinary Tract Symptoms blood, Lower Urinary Tract Symptoms etiology, Lower Urinary Tract Symptoms urine, Male, Middle Aged, Prostatic Hyperplasia blood, Prostatic Hyperplasia complications, Urinalysis, Guidelines as Topic standards, Lower Urinary Tract Symptoms diagnosis, Prostate pathology, Prostate-Specific Antigen blood, Prostatic Hyperplasia diagnosis
- Abstract
Context: Lower urinary tract symptoms (LUTS) represent one of the most common clinical complaints in adult men and have multifactorial aetiology., Objective: To develop European Association of Urology (EAU) guidelines on the assessment of men with non-neurogenic LUTS., Evidence Acquisition: A structured literature search on the assessment of non-neurogenic male LUTS was conducted. Articles with the highest available level of evidence were selected. The Delphi technique consensus approach was used to develop the recommendations., Evidence Synthesis: As a routine part of the initial assessment of male LUTS, a medical history must be taken, a validated symptom score questionnaire with quality-of-life question(s) should be completed, a physical examination including digital rectal examination should be performed, urinalysis must be ordered, post-void residual urine (PVR) should be measured, and uroflowmetry may be performed. Micturition frequency-volume charts or bladder diaries should be used to assess male LUTS with a prominent storage component or nocturia. Prostate-specific antigen (PSA) should be measured only if a diagnosis of prostate cancer will change the management or if PSA can assist in decision-making for patients at risk of symptom progression and complications. Renal function must be assessed if renal impairment is suspected from the history and clinical examination, if the patient has hydronephrosis, or when considering surgical treatment for male LUTS. Uroflowmetry should be performed before any treatment. Imaging of the upper urinary tract in men with LUTS should be performed in patients with large PVR, haematuria, or a history of urolithiasis. Imaging of the prostate should be performed if this assists in choosing the appropriate drug and when considering surgical treatment. Urethrocystoscopy should only be performed in men with LUTS to exclude suspected bladder or urethral pathology and/or before minimally invasive/surgical therapies if the findings may change treatment. Pressure-flow studies should be performed only in individual patients for specific indications before surgery or when evaluation of the pathophysiology underlying LUTS is warranted., Conclusions: These guidelines provide evidence-based practical guidance for assessment of non-neurogenic male LUTS. An extended version is available online (www.uroweb.org/guidelines)., Patient Summary: This article presents a short version of European Association of Urology guidelines for non-neurogenic male lower urinary tract symptoms (LUTS). The recommended tests should be able to distinguish between uncomplicated male LUTS and possible differential diagnoses and to evaluate baseline parameters for treatment. The guidelines also define the clinical profile of patients to provide the best evidence-based care. An algorithm was developed to guide physicians in using appropriate diagnostic tests., (Copyright © 2014 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
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- 2015
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9. A Systematic Review and Meta-analysis of Functional Outcomes and Complications Following Transurethral Procedures for Lower Urinary Tract Symptoms Resulting from Benign Prostatic Obstruction: An Update.
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Cornu JN, Ahyai S, Bachmann A, de la Rosette J, Gilling P, Gratzke C, McVary K, Novara G, Woo H, and Madersbacher S
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- Adult, Aged, Aged, 80 and over, Humans, Laser Therapy adverse effects, Lasers, Solid-State therapeutic use, Length of Stay statistics & numerical data, Male, Middle Aged, Postoperative Complications epidemiology, Prostate pathology, Prostatic Hyperplasia complications, Prostatic Hyperplasia pathology, Randomized Controlled Trials as Topic, Time Factors, Transurethral Resection of Prostate adverse effects, Treatment Outcome, Urinary Bladder Neck Obstruction etiology, Volatilization, Laser Therapy methods, Prostate surgery, Prostatic Hyperplasia surgery, Transurethral Resection of Prostate methods, Urinary Bladder Neck Obstruction surgery
- Abstract
Context: A number of transurethral ablative techniques based on the use of innovative medical devices have been introduced in the recent past for the surgical treatment of benign prostatic obstruction (BPO)., Objective: To conduct a systematic review of the literature and a meta-analysis of available randomized controlled trials (RCTs), and to evaluate the efficacy and safety of transurethral ablative procedures for BPO., Evidence Acquisition: A systematic literature search was performed for all RCTs comparing any transurethral surgical technique for BPO to another between 1992 and 2013. Efficacy was evaluated after a minimum follow-up of 1 yr based on International Prostate Symptom Score, maximum flow rate, and postvoid residual volume. Efficacy at midterm follow-up, prostate volume, perioperative data, and short-term and long-term complications were also assessed. Data were analyzed using RevMan software., Evidence Synthesis: A total of 69 RCTs (8517 enrolled patients) were included. No significant difference was found in terms of short-term efficacy between bipolar transurethral resection of the prostate (B-TURP) and monopolar transurethral resection of the prostate (M-TURP). However, B-TURP was associated with a lower rate of perioperative complications. Better short-term efficacy outcomes, fewer immediate complications, and a shorter hospital stay were found after holmium laser enucleation of the prostate (HoLEP) compared with M-TURP. Compared with M-TURP, GreenLight photoselective vaporization of the prostate (PVP) was associated with a shorter hospital stay and fewer complications but no different short-term efficacy outcomes., Conclusions: This meta-analysis shows that HoLEP is associated with more favorable outcomes than M-TURP in published RCTs. B-TURP and PVP have resulted in better perioperative outcomes without significant differences regarding efficacy parameters after short-term follow-up compared with M-TURP. Further studies are needed to provide long-term comparative data and head-to head comparisons of emerging techniques., Patient Summary: Bipolar transurethral resection of the prostate, photovaporization of the prostate, and holmium laser enucleation of the prostate have shown efficacy outcomes comparable with conventional techniques yet reduce the complication rate. The respective role of these new options in the surgical armamentarium needs to be refined to propose tailored surgical treatment for benign prostatic obstruction relief., (Copyright © 2014 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
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- 2015
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10. Words of wisdom. Re: GreenLight™ laser (XPS) photoselective vapo-enucleation versus holmium laser enucleation of the prostate for the treatment of symptomatic benign prostate hyperplasia: a randomized controlled study.
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Bachmann A and Rieken M
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- Humans, Male, Laser Therapy, Lasers, Solid-State therapeutic use, Prostatectomy methods, Prostatic Hyperplasia surgery
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- 2015
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11. Gender-specific differences in clinicopathologic outcomes following radical cystectomy: an international multi-institutional study of more than 8000 patients.
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Kluth LA, Rieken M, Xylinas E, Kent M, Rink M, Rouprêt M, Sharifi N, Jamzadeh A, Kassouf W, Kaushik D, Boorjian SA, Roghmann F, Noldus J, Masson-Lecomte A, Vordos D, Ikeda M, Matsumoto K, Hagiwara M, Kikuchi E, Fradet Y, Izawa J, Rendon R, Fairey A, Lotan Y, Bachmann A, Zerbib M, Fisch M, Scherr DS, Vickers A, and Shariat SF
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- Aged, Canada, Carcinoma mortality, Carcinoma secondary, Cystectomy adverse effects, Cystectomy mortality, Europe, Female, Humans, Lymphatic Metastasis, Male, Middle Aged, Multivariate Analysis, Neoplasm Invasiveness, Neoplasm Recurrence, Local, Neoplasm Staging, Retrospective Studies, Risk Factors, Sex Factors, Time Factors, Treatment Outcome, United States, Urinary Bladder Neoplasms mortality, Urinary Bladder Neoplasms pathology, Urothelium pathology, Carcinoma surgery, Cystectomy methods, Health Status Disparities, Healthcare Disparities, Urinary Bladder Neoplasms surgery, Urothelium surgery
- Abstract
Background: The impact of gender on the staging and prognosis of urothelial carcinoma of the bladder (UCB) is insufficiently understood., Objective: To assess gender-specific differences in pathologic factors and survival of UCB patients treated with radical cystectomy (RC)., Design, Setting, and Participants: Data from 8102 patients treated with RC (6497 men [80%] and 1605 women [20%]) for UCB between 1971 and 2012 were analyzed., Outcome Measurements and Statistical Analysis: Multivariable competing-risk regression analyses were performed to evaluate the relationship of gender on disease recurrence (DR) and cancer-specific mortality (CSM). We also tested the interaction of gender and tumor stage, nodal status, and lymphovascular invasion (LVI)., Results and Limitations: Female patients were older at the time of RC (p=0.033) and had higher rates of pathologic stage T3/T4 disease (p<0.001). In univariable, but not in multivariable analysis, female gender was associated with a higher risk of DR (p=0.022 and p=0.11, respectively). Female gender was an independent predictor for CSM (p=0.004). We did not find a significant interaction between gender and stage, nodal metastasis, or LVI (all p values >0.05)., Conclusions: We found female gender to be associated with a higher risk of CSM following RC. However, these findings do not appear to be explained by gender differences in pathologic stage, nodal status, or LVI. This gender disparity may be due to differences in care and/or the biology of UCB., (Copyright © 2013 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2014
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12. Bacillus Calmette-Guérin strain differences have an impact on clinical outcome in bladder cancer immunotherapy.
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Rentsch CA, Birkhäuser FD, Biot C, Gsponer JR, Bisiaux A, Wetterauer C, Lagranderie M, Marchal G, Orgeur M, Bouchier C, Bachmann A, Ingersoll MA, Brosch R, Albert ML, and Thalmann GN
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- Administration, Intravesical, Aged, Aged, 80 and over, Animals, BCG Vaccine classification, Carcinoma, Transitional Cell pathology, Disease-Free Survival, Dose-Response Relationship, Drug, Drug Administration Schedule, Female, Humans, Immunotherapy methods, Kaplan-Meier Estimate, Male, Mice, Mice, Inbred C57BL, Middle Aged, Neoplasm Recurrence, Local mortality, Neoplasm Recurrence, Local pathology, Prospective Studies, Risk Assessment, Statistics, Nonparametric, Survival Analysis, Urinary Bladder Neoplasms pathology, BCG Vaccine administration & dosage, Carcinoma, Transitional Cell drug therapy, Carcinoma, Transitional Cell mortality, Urinary Bladder Neoplasms drug therapy, Urinary Bladder Neoplasms mortality
- Abstract
Background: Whether the commonly used bacillus Calmette-Guérin (BCG) strains Connaught and Tice confer different treatment responses in non-muscle-invasive bladder cancer (NMIBC) is unknown., Objectives: To compare clinical efficacy, immunogenicity, and genetics of BCG Connaught and Tice., Design, Setting, and Participants: A prospective randomized single-institution trial with treatment of 142 high-risk NMIBC patients with BCG Connaught or Tice., Intervention: Patients were randomized to receive six instillations of BCG Connaught or Tice. For experimental studies, BCG strains were compared in C57Bl/6 mice. Bladders and lymphoid tissues were analyzed by cytometry and the latter cultivated to detect live BCG. BCG genomic DNA was sequenced and compared with reference genomes., Outcome Measurements and Statistical Analysis: Recurrence-free survival was the primary end point of the clinical study. The Kaplan-Meier estimator was used for estimating survival and time-to-event end points. Nonparametric tests served for the analysis of the in vivo results., Results and Limitations: Treatment with BCG Connaught conferred significantly greater 5-yr recurrence-free survival compared with treatment with BCG Tice (p=0.0108). Comparable numbers of patients experienced BCG therapy-related side effects in each treatment group (p=0.09). In mice, BCG Connaught induced stronger T-helper cell 1-biased responses, greater priming of BCG-specific CD8(+) T cells, and more robust T-cell recruitment to the bladder than BCG Tice. Genome sequencing of the BCG strains revealed candidate genes potentially involved in the differential clinical responses., Conclusions: BCG strain may have an impact on treatment outcome in NMIBC immunotherapy., Patient Summary: We compared the efficacy of two commonly used bacillus Calmette-Guérin (BCG) strains for the treatment of NMIBC and found that treatment with BCG Connaught prevented recurrences more efficiently than BCG Tice. Comparison of the immunogenicity of the two strains in mice indicated superior immunogenicity of BCG Connaught. We also identified genetic differences that may explain the differential efficacy of the Connaught and Tice BCG strains., Trial Registration: NCT00003779., (Copyright © 2014. Published by Elsevier B.V.)
- Published
- 2014
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13. Forgive them for they know what not they do! The importance of the extent of pelvic lymph node dissection at radical prostatectomy.
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Bachmann A and Rieken M
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- Humans, Male, Lymph Node Excision methods, Lymph Nodes surgery, Prostatectomy methods, Prostatic Neoplasms pathology, Prostatic Neoplasms surgery, Robotic Surgical Procedures methods
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- 2014
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14. Reply from authors re: Charalampos Mamoulakis. A plea for higher-quality data for GreenLight laser technology in the context of surgical benign prostatic obstruction trials: the GOLIATH study-fact or fiction in the era of evidence-based urology? Eur Urol 2014;65:943-5.
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Bachmann A and Thomas JA
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- Humans, Male, Laser Therapy, Prostate pathology, Prostatectomy, Prostatic Hyperplasia complications, Prostatic Hyperplasia surgery, Prostatism etiology
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- 2014
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15. 180-W XPS GreenLight laser vaporisation versus transurethral resection of the prostate for the treatment of benign prostatic obstruction: 6-month safety and efficacy results of a European Multicentre Randomised Trial--the GOLIATH study.
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Bachmann A, Tubaro A, Barber N, d'Ancona F, Muir G, Witzsch U, Grimm MO, Benejam J, Stolzenburg JU, Riddick A, Pahernik S, Roelink H, Ameye F, Saussine C, Bruyère F, Loidl W, Larner T, Gogoi NK, Hindley R, Muschter R, Thorpe A, Shrotri N, Graham S, Hamann M, Miller K, Schostak M, Capitán C, Knispel H, and Thomas JA
- Subjects
- Adult, Aged, Aged, 80 and over, Europe, Follow-Up Studies, Hemorrhage etiology, Humans, Intention to Treat Analysis, Length of Stay, Male, Middle Aged, Organ Size, Prospective Studies, Prostate-Specific Antigen blood, Prostatic Hyperplasia blood, Prostatism physiopathology, Severity of Illness Index, Time Factors, Urinary Catheterization, Urinary Incontinence etiology, Urinary Retention etiology, Urodynamics, Laser Therapy adverse effects, Prostate pathology, Prostatectomy adverse effects, Prostatic Hyperplasia complications, Prostatic Hyperplasia surgery, Prostatism etiology
- Abstract
Background: The comparative outcome with GreenLight (GL) photoselective vaporisation of the prostate and transurethral resection of the prostate (TURP) in men with lower urinary tract symptoms due to benign prostatic obstruction (BPO) has been questioned., Objective: The primary objective of the GOLIATH study was to evaluate the noninferiority of 180-W GL XPS (XPS) to TURP for International Prostate Symptom Score (IPSS) and maximum flow rate (Qmax) at 6 mo and the proportion of patients who were complication free., Design, Setting, and Participants: Prospective randomised controlled trial at 29 centres in 9 European countries involving 281 patients with BPO., Intervention: 180-W GL XPS system or TURP., Outcome Measurements and Statistical Analysis: Measurements used were IPSS, Qmax, prostate volume (PV), postvoid residual (PVR) and complications, perioperative parameters, and reintervention rates. Noninferiority was evaluated using one-sided tests at the 2.5% level of significance. The statistical significance of other comparisons was assessed at the (two-sided) 5% level., Results and Limitations: The study demonstrated the noninferiority of XPS to TURP for IPSS, Qmax, and complication-free proportion. PV and PVR were comparable between groups. Time until stable health status, length of catheterisation, and length of hospital stay were superior with XPS (p<0.001). Early reintervention rate within 30 d was three times higher after TURP (p=0.025); however, the overall postoperative reintervention rates were not significantly different between treatment arms. A limitation was the short follow-up., Conclusions: XPS was shown to be noninferior (comparable) to TURP in terms of IPSS, Qmax, and proportion of patients free of complications. XPS results in a lower rate of early reinterventions but has a similar rate after 6 mo., Trial Registration: ClinicalTrials.gov, identifier NCT01218672., (Copyright © 2013. Published by Elsevier B.V.)
- Published
- 2014
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16. Long-term cancer-specific outcomes of TaG1 urothelial carcinoma of the bladder.
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Rieken M, Xylinas E, Kluth L, Crivelli JJ, Chrystal J, Faison T, Lotan Y, Karakiewicz PI, Holmäng S, Babjuk M, Fajkovic H, Seitz C, Klatte T, Pycha A, Bachmann A, Scherr DS, and Shariat SF
- Subjects
- Aged, Carcinoma, Transitional Cell pathology, Combined Modality Therapy methods, Disease Progression, Female, Humans, Male, Middle Aged, Neoplasm Staging, Retrospective Studies, Time Factors, Treatment Outcome, Urinary Bladder Neoplasms pathology, Carcinoma, Transitional Cell drug therapy, Carcinoma, Transitional Cell surgery, Urinary Bladder Neoplasms drug therapy, Urinary Bladder Neoplasms surgery
- Abstract
Background: Few studies have investigated the natural history of TaG1 urothelial carcinoma of the bladder (UCB)., Objective: To assess the long-term outcomes of patients with TaG1 UCB and the impact of immediate postoperative instillation of chemotherapy (IPIC)., Design, Setting, and Participants: A retrospective analysis of 1447 patients with TaG1 UCB treated between 1996 and 2007 at eight centers. Median follow-up was 67.2 mo (interquartile range: 67.9). Patients were stratified into three European Association of Urology (EAU) guidelines risk categories; high-risk patients (n=11) were excluded., Intervention: Transurethral resection of the bladder with or without IPIC., Outcome Measurements and Statistical Analysis: Univariable and multivariable Cox regression models addressed factors associated with disease recurrence, disease progression, death of disease, and any-cause death., Results and Limitations: Of the 1436 patients, 601 (41.9%) and 835 (58.1%) were assigned to low- and intermediate-risk categories, respectively. The actuarial estimate of 5-yr recurrence-free survival was 56% (standard error: ± 1). Advancing age (p=0.04), tumor >3 cm (p=0.001), multiple tumors (p<0.001), and recurrent tumors (p<0.001) were independently associated with increased risk of disease recurrence, whereas IPIC was associated with decreased risk (p=0.001). The actuarial estimate of 5-yr progression-free survival was 95% ± 1. Advancing age (p<0.001) and multiple tumors (p=0.01) were independent risk factors for disease progression. Five-year cancer-specific survival was 98% ± 1. Advancing age (p=0.001) and previous recurrence (p=0.04) were associated with increased risk, whereas female gender (p=0.02) was associated with decreased risk of cancer-specific mortality. Compared with low-risk patients, intermediate-risk patients were at significantly higher risk of disease recurrence, disease progression, and cancer-specific mortality (all p<0.01). Limitations include the retrospective design of the study and the lack of a central pathology review., Conclusions: TaG1 UCB patients experience heterogeneous risks of disease recurrence. We validated the EAU guidelines risk stratification in TaG1 UCB patients. IPIC was associated with a reduced risk of disease recurrence in patients with low- and intermediate-risk TaG1 UCB., (Copyright © 2013 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2014
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17. Virtual reality systems in urologic surgery: an evaluation of the GreenLight simulator.
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Herlemann A, Strittmatter F, Buchner A, Karl A, Reich O, Bachmann A, Stief CG, and Gratzke C
- Subjects
- Clinical Competence, Computer Graphics, Computer-Assisted Instruction instrumentation, Curriculum, Female, Humans, Learning Curve, Male, Motor Skills, Robotics education, Task Performance and Analysis, Computer Simulation, Computer-Assisted Instruction methods, Education, Medical methods, Laser Therapy, Teaching methods, Urologic Surgical Procedures education, User-Computer Interface
- Published
- 2013
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18. EAU guidelines on the treatment and follow-up of non-neurogenic male lower urinary tract symptoms including benign prostatic obstruction.
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Oelke M, Bachmann A, Descazeaud A, Emberton M, Gravas S, Michel MC, N'dow J, Nordling J, and de la Rosette JJ
- Subjects
- 5-alpha Reductase Inhibitors therapeutic use, Adrenergic alpha-1 Receptor Antagonists therapeutic use, Humans, Lower Urinary Tract Symptoms diagnosis, Lower Urinary Tract Symptoms physiopathology, Male, Muscarinic Antagonists therapeutic use, Phosphodiesterase Inhibitors therapeutic use, Prostatic Hyperplasia diagnosis, Prostatic Hyperplasia physiopathology, Risk Reduction Behavior, Severity of Illness Index, Stents standards, Transurethral Resection of Prostate adverse effects, Treatment Outcome, Urinary Catheterization standards, Urological Agents adverse effects, Lower Urinary Tract Symptoms therapy, Prostatic Hyperplasia therapy, Transurethral Resection of Prostate standards, Urological Agents therapeutic use, Urology standards, Watchful Waiting standards
- Abstract
Objective: To present a summary of the 2013 version of the European Association of Urology guidelines on the treatment and follow-up of male lower urinary tract symptoms (LUTS)., Evidence Acquisition: We conducted a literature search in computer databases for relevant articles published between 1966 and 31 October 2012. The Oxford classification system (2001) was used to determine the level of evidence for each article and to assign the grade of recommendation for each treatment modality., Evidence Synthesis: Men with mild symptoms are suitable for watchful waiting. All men with bothersome LUTS should be offered lifestyle advice prior to or concurrent with any treatment. Men with bothersome moderate-to-severe LUTS quickly benefit from α1-blockers. Men with enlarged prostates, especially those >40ml, profit from 5α-reductase inhibitors (5-ARIs) that slowly reduce LUTS and the probability of urinary retention or the need for surgery. Antimuscarinics might be considered for patients who have predominant bladder storage symptoms. The phosphodiesterase type 5 inhibitor tadalafil can quickly reduce LUTS to a similar extent as α1-blockers, and it also improves erectile dysfunction. Desmopressin can be used in men with nocturia due to nocturnal polyuria. Treatment with an α1-blocker and 5-ARI (in men with enlarged prostates) or antimuscarinics (with persistent storage symptoms) combines the positive effects of either drug class to achieve greater efficacy. Prostate surgery is indicated in men with absolute indications or drug treatment-resistant LUTS due to benign prostatic obstruction. Transurethral resection of the prostate (TURP) is the current standard operation for men with prostates 30-80ml, whereas open surgery or transurethral holmium laser enucleation is appropriate for men with prostates >80ml. Alternatives for monopolar TURP include bipolar TURP and transurethral incision of the prostate (for glands <30ml) and laser treatments. Transurethral microwave therapy and transurethral needle ablation are effective minimally invasive treatments with higher retreatment rates compared with TURP. Prostate stents are an alternative to catheterisation for men unfit for surgery. Ethanol or botulinum toxin injections into the prostate are still experimental., Conclusions: These symptom-oriented guidelines provide practical guidance for the management of men experiencing LUTS. The full version is available online (www.uroweb.org/gls/pdf/12_Male_LUTS.pdf)., (Copyright © 2013 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2013
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19. ESUT expert group on laparoscopy proposes uniform terminology during radical prostatectomy: we need to speak the same language.
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Rassweiler J, Laguna P, Chlosta P, Pansadoro V, Gaboardi F, Stolzenburg JU, Barret E, Liatiskos E, Tunc L, Frede T, John H, Bachmann A, and van Velthoven R
- Subjects
- Consensus, Humans, Male, Practice Guidelines as Topic, Prostatectomy standards, Laparoscopy standards, Prostate pathology, Prostate surgery, Prostatectomy methods, Robotics standards, Surgery, Computer-Assisted standards, Terminology as Topic
- Published
- 2013
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20. Surgical benign prostatic hyperplasia trials: the future is now!
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Bachmann A, Muir GH, Wyler SF, and Rieken M
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- Humans, Male, Electrosurgery methods, Prostate surgery, Prostatic Hyperplasia surgery, Transurethral Resection of Prostate methods, Urethral Stricture surgery
- Published
- 2013
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21. Potential consequences of low biopsy core number in selection of patients with prostate cancer for current active surveillance protocols.
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Müller G, Bonkat G, Rieken M, Wyler SF, Bubendorf L, Püschel H, Gasser TC, Bachmann A, and Rentsch CA
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- Aged, Aged, 80 and over, Biopsy, Large-Core Needle, Humans, Male, Middle Aged, Patient Selection, Prostate pathology, Prostatectomy, Prostatic Neoplasms surgery, Prostatic Neoplasms pathology, Prostatic Neoplasms therapy
- Abstract
Objective: To compare the performance of the Epstein criteria and the Prostate Cancer Research International: Active Surveillance (PRIAS) criteria in the identification of patients eligible for active surveillance (AS) but treated with radical prostatectomy., Materials and Methods: We evaluated the baseline characteristics, final pathologic examination, and prostate-specific antigen follow-up (median 43 months, range 1-118) in a series of 492 consecutive patients with prostate cancer managed by radical prostatectomy without AS from 2001 to 2011 at a single institution. Using the postoperative histologic findings, multivariate analysis was used to identify the preoperative predictors of unfavorable AS selection (Gleason score >6 and/or greater than stage pT2c on the final pathologic examination). Biochemical recurrence-free survival was compared between favorably and unfavorably selected patients., Results: Applying the Epstein and PRIAS criteria, 29.2% and 32.2% of the patients had Gleason score >6 or stage pT3 on final pathologic examination, respectively. After a median follow-up of 35.5 and 38 months, 4.2% and 4.3% of patients developed biochemical recurrence in the Epstein and PRIAS criteria groups, respectively. Patients with unfavorable selection had significantly worse biochemical recurrence-free survival than patients with favorable selection (P <.05). Although the median biopsy core number was 8, a biopsy core number <9 was a significant and independent predictor for unfavorable preoperative AS selection in the PRIAS group., Conclusion: We found a non-negligible risk of underestimating unfavorable cancer in patients theoretically qualifying for AS in our cohort. The current use of a sufficient number of biopsy cores might improve the selection process for AS., (Copyright © 2013 Elsevier Inc. All rights reserved.)
- Published
- 2013
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22. Growth of mycobacteria in urine determined by isothermal microcalorimetry: implications for urogenital tuberculosis and other mycobacterial infections.
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Bonkat G, Bachmann A, Solokhina A, Widmer AF, Frei R, Gasser TC, and Braissant O
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- Bacteriological Techniques, Calorimetry, Humans, Mycobacterium Infections diagnosis, Mycobacterium Infections urine, Mycobacterium tuberculosis growth & development, Tuberculosis, Urogenital diagnosis, Tuberculosis, Urogenital urine, Mycobacterium growth & development, Mycobacterium Infections microbiology, Tuberculosis, Urogenital microbiology, Urine microbiology
- Abstract
Objective: To overcome the limitations of current urine-based diagnostic assays of urogenital tuberculosis, we used isothermal microcalorimetry to detect the metabolic activity of Mycobacterium tuberculosis and other commonly neglected pathogenic mycobacteria in urine and accurately determine their growth parameters., Methods: A microcalorimeter equipped with 48 channels was used. Detection was accomplished, and growth was monitored for 4 different Mycobacterium species in sterilized and modified urine at 37 °C by measuring metabolic heat flow (μW = μJ/s) as a function of time. These strains were M. smegmatis, M. phlei, M. kansasii, and M. tuberculosis. The data were integrated to perform curve fitting and extract the growth parameter from the raw data., Results: In sterilized urine, M. smegmatis showed the fastest growth rate (0.089 ± 0.017 [h(-1)]), followed by M. phlei (0.072 ± 0.016 [h(-1)]) and M. kansasii (0.007 ± 0.001 [h(-1)]). No growth of M. tuberculosis was detected in sterilized urine. However, in serum-supplemented urine, growth of M. tuberculosis was observed within 3 weeks at a growth rate of 0.008 ± 0.001 [h(-1)]. Biofilm formation was enhanced in the serum supplemented urine., Conclusion: Isothermal microcalorimetry allows rapid and accurate detection of mycobacterial growth in urine. Given the absence of data on the mycobacterial growth in urine, isothermal microcalorimetry could be used to unravel key aspects of Mycobacterium physiology in the urinary tract and potentially contribute to improvement in the diagnosis and treatment of urogenital tuberculosis., (Copyright © 2012 Elsevier Inc. All rights reserved.)
- Published
- 2012
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23. Photoselective vaporisation of the prostate using 80-W and 120-W laser versus transurethral resection of the prostate for benign prostatic hyperplasia: a systematic review with meta-analysis from 2002 to 2012.
- Author
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Thangasamy IA, Chalasani V, Bachmann A, and Woo HH
- Subjects
- Blood Transfusion, Humans, Laser Therapy adverse effects, Laser Therapy instrumentation, Lasers, Solid-State, Length of Stay, Male, Postoperative Complications epidemiology, Randomized Controlled Trials as Topic, Transurethral Resection of Prostate adverse effects, Treatment Outcome, Laser Therapy methods, Prostatic Hyperplasia surgery, Transurethral Resection of Prostate methods
- Abstract
Context: Photoselective vaporisation (PVP) of the prostate is being used increasingly to treat symptomatic benign prostatic hyperplasia, due to the associated lower morbidity. Holmium laser enucleation of the prostate was considered to be the treatment with the highest evidence; however, evidence for PVP has dramatically increased recently., Objective: To conduct a systematic review and meta-analysis of level 1 evidence studies to determine the effectiveness of PVP versus transurethral resection of the prostate (TURP) for surgical treatment of benign prostatic hyperplasia. Outcomes reviewed included perioperative data, complications, and functional outcomes., Evidence Acquisition: Biomedical databases from 2002 to 2012 and American Urological Association and European Association of Urology conference proceedings from 2007 to 2011 were searched. Trials were included if they were randomised controlled trials, had PVP as the intervention, and TURP as control. Meta-analysis was performed using a random effects model., Evidence Synthesis: Nine trials were identified with 448 patients undergoing PVP (80 W in five trials and 120 W in four trials) and 441 undergoing TURP. Catheterisation time and length of stay were shorter in the PVP group by 1.91 d (95% confidence interval [CI], 1.47-2.35; p<0.00001) and 2.13 d (95% CI, 1.78-2.48; p<0.00001), respectively. Operation time was shorter in the TURP group by 19.64 min (95% CI, 9.05-30.23; p=0.0003). Blood transfusion was significantly less likely in the PVP group (risk ratio: 0.16; 95% CI, 0.05-0.53; p=0.003). There were no significant differences between PVP and TURP when comparing other complications. Regarding functional outcomes, six studies found no difference between PVP and TURP, two favoured TURP, and one favoured PVP., Conclusions: Perioperative outcomes of catheterisation time and length of hospital stay were shorter with PVP, whereas operative time was longer with PVP. Postoperative complications of blood transfusion and clot retention were significantly less likely with PVP; no difference was noted in other complications. Overall, no difference was noted in intermediate-term functional outcomes., (Copyright © 2012 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2012
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24. Re: Stephan Madersbacher. After three randomised controlled trials comparing 120-W high-performance-system potassium-titanyl-phosphate laser vaporisation to transurethral resection of the prostate (TURP), is this procedure finally first-line, outdated, or still not surpassing TURP? Eur Urol 2012;61:1174-6.
- Author
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Woo HH and Bachmann A
- Subjects
- Humans, Male, Laser Therapy instrumentation, Lasers, Lower Urinary Tract Symptoms surgery, Prostatic Hyperplasia surgery, Transurethral Resection of Prostate
- Published
- 2012
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25. 180-W XPS GreenLight laser therapy for benign prostate hyperplasia: early safety, efficacy, and perioperative outcome after 201 procedures.
- Author
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Bachmann A, Muir GH, Collins EJ, Choi BB, Tabatabaei S, Reich OM, Gómez-Sancha F, and Woo HH
- Subjects
- Adult, Aged, Aged, 80 and over, Humans, Lower Urinary Tract Symptoms surgery, Male, Middle Aged, Multicenter Studies as Topic, Organ Size, Prevalence, Prospective Studies, Prostatic Hyperplasia pathology, Treatment Outcome, Laser Therapy methods, Postoperative Complications epidemiology, Prostatectomy methods, Prostatic Hyperplasia surgery
- Abstract
Background: Photoselective vaporisation of the prostate has evolved from the GreenLight 80-W KTP powered laser to the latest 180-W XPS laser involving a MoXy fibre., Objective: Evaluate the prevalence of perioperative complications and short-term outcome for the first time with the XPS laser in men with lower urinary tract symptoms (LUTS) due to benign prostatic enlargement (BPE)., Design, Setting, and Participants: Prospective data were collected from consecutive patients at seven centres worldwide during June 2010 and March 2011. Indication for surgery was based on the European Association of Urology and the American Urological Association guidelines. Patients receiving anticoagulants or those with retention were included and analysed separately., Intervention: 180-W XPS GreenLight laser prostatectomy using the MoXy fibre., Measurements: Standard parameters associated with transurethral prostate surgery and perioperative prevalence of surgery-associated problems or complications were documented., Results and Limitations: A total of 201 patients were included in the study. Mean follow-up was 5.8 mo (standard deviation [SD]: 2.8; range: 1-12 mo). A quarter of the patients had a prostate volume≥80 ml. For prostates between 51 and 60 ml, a mean of 300 kJ (SD: 112) of energy was applied (lasing time: 35.0 min; SD: 15). Statistically significant improvements were noted in all key parameters postoperatively. The prevalence of perioperative complications was low. Limitations of the study are short duration of follow-up and limited number of available patients for the functional follow-up., Conclusions: The 180-W GreenLight XPS laser is a new effective treatment option with a low prevalence of perioperative complications for patients suffering from LUTS due to BPE., (Copyright © 2011 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2012
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26. Laser treatment of benign prostatic obstruction: basics and physical differences.
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Bach T, Muschter R, Sroka R, Gravas S, Skolarikos A, Herrmann TR, Bayer T, Knoll T, Abbou CC, Janetschek G, Bachmann A, and Rassweiler JJ
- Subjects
- Humans, Laser Therapy methods, Male, Treatment Outcome, Laser Therapy instrumentation, Prostatic Hyperplasia complications, Prostatic Hyperplasia surgery, Urethral Obstruction etiology, Urethral Obstruction surgery
- Abstract
Context: Laser treatment of benign prostatic obstruction (BPO) has become more prevalent in recent years. Although multiple surgical approaches exist, there is confusion about laser-tissue interaction, especially in terms of physical aspects and with respect to the optimal treatment modality., Objective: To compare available laser systems with respect to physical fundamentals and to discuss the similarities and differences among introduced laser devices., Evidence Acquisition: The paper is based on the second expert meeting on the laser treatment of BPO organised by the European Association of Urology Section of Uro-Technology. A systematic literature search was also carried out to cover the topic of laser treatment of BPO extensively., Evidence Synthesis: The principles of generation of laser radiation, laser fibre construction, the types of energy emission, and laser-tissue interaction are discussed in detail for the laser systems used in the treatment of BPO. The most relevant laser systems are compared and their physical properties discussed in depth., Conclusions: Laser treatment of BPO is gaining widespread acceptance. Detailed knowledge of the physical principles allows the surgeon to discriminate between available laser systems and their possible pitfalls to guarantee high safety levels for the patient., (Copyright © 2011 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2012
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27. Benign prostatic hyperplasia and lower urinary tract symptoms: research priorities.
- Author
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De Nunzio C, Ahyai S, Autorino R, Bachmann A, Bialek W, Briganti A, Reich O, Sosnowski R, Thiruchelvam N, and Novara G
- Subjects
- Humans, Male, Predictive Value of Tests, Prognosis, Terminology as Topic, Biomedical Research organization & administration, Health Priorities organization & administration, Lower Urinary Tract Symptoms classification, Lower Urinary Tract Symptoms diagnosis, Lower Urinary Tract Symptoms physiopathology, Lower Urinary Tract Symptoms therapy, Prostatic Hyperplasia classification, Prostatic Hyperplasia diagnosis, Prostatic Hyperplasia physiopathology, Prostatic Hyperplasia therapy
- Published
- 2011
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28. Laparoscopic living-donor nephrectomy: analysis of the existing literature.
- Author
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Greco F, Hoda MR, Alcaraz A, Bachmann A, Hakenberg OW, and Fornara P
- Subjects
- Humans, Nephrectomy adverse effects, Treatment Outcome, Laparoscopy adverse effects, Living Donors, Nephrectomy methods
- Abstract
Context: Laparoscopic living-donor nephrectomy (LLDN) has achieved a permanent place in renal transplantation and in some centers has replaced open donor nephrectomy as the standard technique., Objective: To evaluate the published literature regarding the relative results and complications of open LLDN and the hybrid technique of hand-assisted LLDN., Evidence Acquisition: A systematic review of the literature was performed, searching PubMed and Web of Science. A "free text" protocol using the term living-donor nephrectomy was applied. Six hundred twenty-nine records were retrieved from the PubMed database and 686 records were retrieved from the Web of Science database., Evidence Synthesis: Fifty-seven comparative studies were identified in the literature search. The three techniques of open, laparoscopic, and hand-assisted laparoscopic donor nephrectomy were compared in terms of reported outcomes. With regard to the perioperative outcome parameters, laparoscopy was better than open surgery in terms of blood loss, analgesic requirements, and duration of hospital stay and convalescence. Postoperative graft function was not significantly different between the different forms of donor nephrectomy, although longer warm ischemia times are reported for laparoscopy., Conclusions: All three techniques of live-donor nephrectomy are standard of care. The laparoscopic techniques result in less postoperative pain and estimated blood loss with shorter hospital stay, while postoperative graft function is not inferior to that after open live-donor nephrectomy., (Copyright 2010 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2010
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29. Plasma vaporisation of the prostate: initial clinical results.
- Author
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Reich O, Schlenker B, Gratzke C, Tilki D, Riecken M, Stief C, Seitz M, and Bachmann A
- Subjects
- Aged, Aged, 80 and over, Dysuria etiology, Electrosurgery adverse effects, Germany, Humans, Male, Middle Aged, Prospective Studies, Prostatic Hyperplasia complications, Prostatic Hyperplasia physiopathology, Reoperation, Severity of Illness Index, Switzerland, Time Factors, Transurethral Resection of Prostate, Treatment Outcome, Urinary Bladder Neck Obstruction etiology, Urinary Bladder Neck Obstruction physiopathology, Urinary Catheterization, Urodynamics, Volatilization, Electrosurgery methods, Prostatic Hyperplasia surgery, Urinary Bladder Neck Obstruction surgery
- Abstract
Background: Laser vaporisation of the prostate has had a considerable impact in recent years. In an attempt to achieve tissue vaporisation with bipolar high-frequency generators, plasma vaporisation was recently introduced., Objective: To provide the first clinical information on bipolar plasma vaporisation of the prostate for patients with lower urinary tract symptoms (LUTS) due to bladder outlet obstruction (BOO)., Design, Setting, and Participants: Thirty patients were included in this prospective bicentre study., Intervention: All patients underwent bipolar plasma vaporisation with a novel electrode (Olympus Winter & Ibe GmbH, Hamburg, Germany)., Measurements: International Prostate Symptom Score (IPSS), bother score, maximum flow rate (Q(max)), and postvoid residual were evaluated at baseline and at the time of discharge as well as at 1, 3, and 6 mo after the intervention., Results and Limitations: Mean preoperative prostate volume was 59±32 ml (range: 30-170), and mean operating time was 61±26 min (range: 20-140). Besides one reoperation (conventional transurethral prostatectomy) due to persistent obstruction, no major complication occurred intra- or postoperatively and no blood transfusion was required. Catheterisation time averaged 41±35 h (range: 18-192). Transient mild to moderate dysuria was noted in four patients (13%). At 1, 3, and 6 mo, Q(max) increased from 6.6±2.7 ml/s preoperative to 17.3±4.7 ml/s (p<0.01), 18.5±4.6 ml/s (p<0.01), and 18.1±5.0 ml/s (p<0.01), respectively. The IPSS decreased from 20.8±3.6 to 10.4±3.5 (p<0.01), 8.2±2.9 (p<0.01), and 8.1±3.1 (p<0.01), respectively. These data represent a small nonrandomised study cohort with limited follow-up., Conclusions: Our initial experience indicates that bipolar plasma vaporisation might be a safe and effective treatment option for patients with LUTS due to BOO. To define the potential role of this novel technique, randomised trials with longer follow-up are mandatory., (Copyright © 2009 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2010
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30. Editorial comment on: Robotic laparoendoscopic single-site surgery using GelPort as the access platform.
- Author
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Bachmann A and Wyler S
- Subjects
- Equipment Design, Female, Humans, Male, Nephrectomy instrumentation, Prostatectomy instrumentation, Surgery, Computer-Assisted adverse effects, Time Factors, Treatment Outcome, Urologic Surgical Procedures adverse effects, Urologic Surgical Procedures methods, Laparoscopes, Laparoscopy adverse effects, Robotics instrumentation, Surgery, Computer-Assisted instrumentation, Urologic Surgical Procedures instrumentation
- Published
- 2010
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31. Editorial comment on: Expression of aquaporin 1 in primary renal tumors: a prognostic indicator of clear-cell renal cell carcinoma.
- Author
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Rentsch CA and Bachmann A
- Subjects
- Aquaporin 1 analysis, Carcinoma, Renal Cell chemistry, Humans, Kidney Neoplasms chemistry, Prognosis, Reverse Transcriptase Polymerase Chain Reaction, Survival Analysis, Aquaporin 1 biosynthesis, Carcinoma, Renal Cell metabolism, Carcinoma, Renal Cell mortality, Kidney Neoplasms metabolism, Kidney Neoplasms mortality
- Published
- 2009
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32. Perioperative morbidity of laparoscopic cryoablation of small renal masses with ultrathin probes: a European multicentre experience.
- Author
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Laguna MP, Beemster P, Kumar V, Klingler HC, Wyler S, Anderson C, Keeley FX, Bachmann A, Rioja J, Mamoulakis C, Marberger M, and de la Rosette JJ
- Subjects
- Adult, Aged, Aged, 80 and over, Europe, Female, Humans, Kidney Neoplasms pathology, Male, Middle Aged, Postoperative Complications epidemiology, Postoperative Complications etiology, Prospective Studies, Risk Factors, Cryosurgery adverse effects, Cryosurgery methods, Kidney Neoplasms surgery, Laparoscopy
- Abstract
Background: Low morbidity has been advocated for cryoablation of small renal masses., Objectives: To assess negative perioperative outcomes of laparoscopic renal cryoablation (LRC) with ultrathin cryoprobes and patient, tumour, and operative risk factors for their development., Design, Setting, and Participants: Prospective collection of data on LRC in five centres., Intervention: LRC., Measurements: Preoperative morbidity was assessed clinically and the American Society of Anaesthesiologists (ASA) score was assigned prospectively. Charlson Comorbidity Index (CCI) and Charlson-Age Comorbidity Index (CACI) scores were retrospectively assigned. Negative outcomes were prospectively recorded and defined as any undesired event during the perioperative period, including complications, with the latter classed according to the Clavien system. Patient, tumour, and operative variables were tested in univariate analysis as risk factors for occurrence of negative outcomes. Significant variables (p<0.05) were entered in a step-forward multivariate logistic regression model to identify independent risk factors for one or more perioperative negative outcomes. The confidence interval was settled at 95%., Results and Limitations: There were 148 procedures in 144 patients. Median age and tumour size were 70.5 yr (range: 32-87) and 2.6 cm (range: 1.0-5.6), respectively. A laparoscopic approach was used in 145 cases (98%). Median ASA, CCI, and CACI scores were 2 (range: 1-3), 2 (range: 0-7), and 4 (range: 0-11), respectively. Comorbidities were present in 79% of patients. Thirty negative outcomes and 28 complications occurred in 25 (17%) and 23 (15.5%) cases, respectively. Only 20% of all complications were Clavien grade > or = 3. Multivariate analysis showed that tumour size in centimetres, the presence of cardiac conditions, and female gender were independent predictors of negative perioperative outcomes occurrence. Receiver operator characteristic curve confirmed the tumour size cut-off of 3.4 cm as an adequate predictor of negative outcomes., Conclusions: Perioperative negative outcomes and complications occur in 17% and 15.5%, respectively, of cases treated by LRC with multiple ultrathin needles. Most of the complications are Clavien grade 1 or 2. The presence of cardiac conditions, female gender, and tumour size are independent prognostic factors for the occurrence of a perioperative negative outcome.
- Published
- 2009
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33. A review of the recent evidence (2006-2008) for 532-nm photoselective laser vaporisation and holmium laser enucleation of the prostate.
- Author
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Naspro R, Bachmann A, Gilling P, Kuntz R, Madersbacher S, Montorsi F, Reich O, Stief C, and Vavassori I
- Subjects
- Case-Control Studies, Cohort Studies, Evidence-Based Medicine, Humans, Male, Minimally Invasive Surgical Procedures methods, Postoperative Complications mortality, Postoperative Complications physiopathology, Prognosis, Prostatic Hyperplasia pathology, Risk Assessment, Severity of Illness Index, Transurethral Resection of Prostate methods, Treatment Outcome, Laser Therapy methods, Lasers, Solid-State therapeutic use, Prostatectomy methods, Prostatic Hyperplasia surgery
- Abstract
Context: Holmium laser enucleation of the prostate (HoLEP) and 532-nm laser vaporisation of the prostate (with potassium titanyl phosphate [KTP] or lithium borate [LBO]) are promising alternatives to transurethral resection of the prostate (TURP) and open prostatectomy (OP)., Objective: To assess safety, efficacy, and durability by analysing the most recent evidence of both techniques, aiming to identify advantages, pitfalls, and unresolved issues., Evidence Acquisition: A Medline search of recently published data (2006-2008) regarding both techniques over the last 2 yr (January 2006 to September 2008) was performed using evidence obtained from randomised trials (level of evidence: 1b), well-designed controlled studies without randomisation (level of evidence: 2a), individual cohort studies (level of evidence: 2b), individual case control studies (level of evidence: 3), and case series (level of evidence: 4)., Evidence Synthesis: In the last 2 yr, several case-control and cohort studies have demonstrated reproducibility, safety, and efficacy of HoLEP and 80-W KTP laser vaporisation. Four randomised controlled trials (RCTs) were available for HoLEP, two compared with TURP and two compared with OP, with follow-up >24 mo. Results confirmed general efficacy and durability of HoLEP, as compared with both standard techniques. Only two RCTs were available comparing KTP laser vaporisation with TURP with short-term follow-up, and only one RCT was available comparing KTP laser vaporisation with OP. The results confirmed the overall low perioperative morbidity of KTP laser vaporisation, although efficacy was comparable to TURP in the short term, despite a higher reoperation rate., Conclusions: Although they are at different points of maturation, KTP or LBO laser vaporisation and HoLEP are promising alternatives to both TURP and OP. Sufficient data proves HoLEP's durability for most prostate sizes at long-term follow-up; KTP laser vaporisation needs further evaluation to define the reoperation rate. Increasing the number of quality prospective RCTs with adequate follow-up is mandatory to tailor each technique to the right patient.
- Published
- 2009
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34. Endoscopic management of bisected hemidiaphragm during retroperitoneoscopic donor nephrectomy.
- Author
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Ruszat R, Wyler SF, Gürke L, Gambazzi F, Ebinger N, Steiger J, Sulser T, Gasser TC, and Bachmann A
- Subjects
- Adult, Female, Humans, Kidney Transplantation, Retroperitoneal Space, Suture Techniques, Catheterization adverse effects, Diaphragm injuries, Endoscopy, Nephrectomy adverse effects, Tissue and Organ Harvesting adverse effects
- Abstract
Retroperitoneoscopy is our preferred technique for renal surgery and is routinely performed for living donor nephrectomy. We report a case of a totally bisected left hemidiaphragm during left-sided retroperitoneoscopic donor nephrectomy. This was most likely caused when creating the retroperitoneal working space by balloon dilation. Because the cardiopulmonary situation of the patient remained stable, retroperitoneoscopic donor nephrectomy was performed with the standard technique. This report describes for the first time the retroperitoneoscopic reconstruction of a diaphragmatic injury.
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- 2008
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35. Editorial comment on: Functional outcome following photoselective vaporisation of the prostate (PVP): urodynamic findings within 12 months follow-up.
- Author
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Bachmann A
- Subjects
- Follow-Up Studies, Humans, Male, Prostatic Hyperplasia complications, Time Factors, Treatment Outcome, Urinary Bladder Neck Obstruction etiology, Laser Therapy, Prostatectomy methods, Prostatic Hyperplasia physiopathology, Prostatic Hyperplasia surgery, Urinary Bladder Neck Obstruction physiopathology, Urinary Bladder Neck Obstruction surgery, Urodynamics
- Published
- 2008
- Full Text
- View/download PDF
36. GreenLight laser vaporization of the prostate: single-center experience and long-term results after 500 procedures.
- Author
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Ruszat R, Seitz M, Wyler SF, Abe C, Rieken M, Reich O, Gasser TC, and Bachmann A
- Subjects
- Aged, Aged, 80 and over, Follow-Up Studies, Humans, Male, Middle Aged, Prostatic Hyperplasia complications, Prostatism etiology, Time Factors, Treatment Outcome, Laser Therapy, Prostatectomy methods, Prostatic Hyperplasia surgery, Prostatism surgery
- Abstract
Background: Long-term data of photoselective vaporization of the prostate (PVP) for treatment of lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH) is scanty., Objective: Evaluate the long-term efficacy and the complication rate in 80-watt (W) PVP., Design, Setting, and Participants: 500 consecutive patients with LUTS secondary to BPH underwent PVP between September 2002 and April 2007. The mean follow-up was 30.6+/-16.6 (5.2-60.6) mo., Intervention: All patients underwent 80-W PVP performed by seven surgeons., Measurements: We evaluated perioperative parameters, including operation time, delivered energy, changes of hemoglobin and serum sodium, catheterization, and hospitalization time as well as intraoperative and postoperative complications. Patients presenting for follow-up had data assessed on the International Prostate Symptom Score and quality-of-life questionnaire (IPPS-QoL), maximal flow rate (Q(max)), and post-voiding residual volume (Vres)., Results and Limitations: Mean patient age was 71.4+/-9.6 (46-96) yr, with a mean preoperative prostate volume of 56.1+/-25.3 (10-180) ml. Mean operation time was 66.4+/-26.8 (10-160) min, and mean energy delivery was 206+/-94 (2.4-619.0) kJ. Despite ongoing oral anticoagulation in 45% of the patients (n=225), no severe intraoperative complications were observed. Mean catheterization and postoperative hospitalization time was 1.8+/-1.2 (0-10) and 3.7+/-2.9 (0-35) d, respectively. The mean IPSS after 3 yr was 8.0+/-6.2, the QoL score was 1.3+/-1.3, the Q(max) was 18.4+/-8.0 ml/s, and the Vres was 28+/-42 ml. The retreatment rate was 6.8%. Urethral and bladder neck strictures were observed in 4.4% and 3.6% of the patients, respectively. Localized prostate cancer was diagnosed during follow-up in six patients., Conclusion: PVP is a safe and effective procedure for treatment of LUTS secondary to BPH. Patients on ongoing oral anticoagulation can be safely operated on. PVP leads to an immediate and sustained improvement of subjective and objective voiding parameters. The late complication rate is comparable to that of transurethral electroresection of the prostate.
- Published
- 2008
- Full Text
- View/download PDF
37. The motion: laser therapy for BPH is preferable to TURP.
- Author
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Bachmann A and Marberger M
- Subjects
- Humans, Male, Laser Therapy, Prostatic Hyperplasia therapy, Transurethral Resection of Prostate
- Published
- 2008
- Full Text
- View/download PDF
38. Editorial comment on: cold-knife incision of anastomotic strictures after radical retropubic prostatectomy with bladder neck preservation: efficacy and impact on urinary continence status.
- Author
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Bachmann A
- Subjects
- Aged, Anastomosis, Surgical, Constriction, Pathologic epidemiology, Constriction, Pathologic etiology, Humans, Incidence, Male, Middle Aged, Postoperative Complications epidemiology, Urinary Incontinence epidemiology, Urodynamics, Constriction, Pathologic surgery, Postoperative Complications surgery, Prostatectomy methods, Urinary Bladder surgery, Urinary Incontinence etiology, Urologic Surgical Procedures methods
- Published
- 2008
- Full Text
- View/download PDF
39. Editorial comment on: transurethral photoselective vaporization versus transvesical open enucleation for prostatic adenomas >80ml: 12-mo results of a randomized prospective study.
- Author
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Bachmann A
- Subjects
- Humans, Male, Prostatectomy methods, Prostatic Hyperplasia pathology, Randomized Controlled Trials as Topic, Urinary Bladder, Prostatic Hyperplasia surgery, Transurethral Resection of Prostate
- Published
- 2008
- Full Text
- View/download PDF
40. The diode laser: a novel side-firing approach for laser vaporisation of the human prostate--immediate efficacy and 1-year follow-up.
- Author
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Seitz M, Sroka R, Gratzke C, Schlenker B, Steinbrecher V, Khoder W, Tilki D, Bachmann A, Stief C, and Reich O
- Subjects
- Aged, Aged, 80 and over, Follow-Up Studies, Humans, Male, Middle Aged, Prostatic Hyperplasia complications, Volatilization, Laser Therapy methods, Lasers, Semiconductor therapeutic use, Prostatectomy methods, Prostatic Hyperplasia therapy, Urinary Bladder Neck Obstruction therapy
- Abstract
Objectives: A prototype diode laser was used to evaluate the feasibility and postoperative outcome of diode laser vaporisation of the prostate in patients with bladder outlet obstruction (BOO) necessitating interventional desobstruction., Methods: Ten patients were included in this pilot study. The prostate was vaporised via a side-fire laser fibre (diode laser at 1470 nm, 50 W; Biolitec-AG, Jena, Germany). IPSS, quality of life, Q(max), and PVR volume were measured pre- and postoperatively and 1 yr after the intervention., Results: Prostate volumes were 35-78 ml. A mean 121 kJ (61-200 kJ) of energy was delivered. No patient had significant blood loss or fluid absorption. Three-way catheters were removed after a median of 33 h. Q(max) increased from 8.9 ml/s (3.6-13.2 ml/s) preoperatively to 15.7 ml/s (10.5-22 ml/s) (p<0.01) postoperatively. After the 12-mo follow-up, Q(max) increased to 22.35 ml/s (+/-4.32 ml/s; p<0.001). PVR volume changed from a baseline of 243 ml to 26.9 ml (p<0.001) after 12 mo. Volume reduction was estimated by transrectal ultrasound postoperatively (15 cc+/-6.39), and by PSA levels before surgery (3.8 ng/ml+/-2.3) and after 6 mo (2.64 ng/ml+/-1.51). No patient is incontinent. Two patients required recatheterisation postoperatively on days 1 and 2, respectively. Two patients required TURP within 2 mo. All patients without reintervention have presented for the 1-yr follow-up examination and are satisfied with the outcome., Conclusions: Our preliminary findings indicate that 50-W diode laser vaporisation prostatectomy at 1470 nm is feasible and appears to be effective for acutely relieving BOO.
- Published
- 2007
- Full Text
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41. Editorial comment on: Sexual function after transurethral resection of the prostate (TURP): results of an independent prospective multicentre assessment of outcome.
- Author
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Bachmann A
- Subjects
- Aged, Humans, Male, Prospective Studies, Prostatic Hyperplasia complications, Risk Factors, Surveys and Questionnaires, Switzerland epidemiology, Treatment Outcome, Postoperative Complications epidemiology, Prostatic Hyperplasia surgery, Sexual Dysfunction, Physiological epidemiology, Transurethral Resection of Prostate
- Published
- 2007
- Full Text
- View/download PDF
42. Short-, intermediate-, and long-term quality of life after laparoscopic radical prostatectomy--does the learning curve of LRP have a negative impact on patients' quality of life?
- Author
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Wyler SF, Ruszat R, Straumann U, Forster TH, Provenzano M, Sulser T, Gasser TC, and Bachmann A
- Subjects
- Follow-Up Studies, Humans, Male, Middle Aged, Prospective Studies, Time Factors, Clinical Competence statistics & numerical data, Laparoscopy, Prostatectomy education, Prostatectomy methods, Quality of Life
- Abstract
Objectives: To evaluate quality of life (QoL) after laparoscopic radical prostatectomy (LRP) and investigate whether the learning curve of laparoscopic novices has a negative influence on patients' QoL., Methods: Evaluation of QoL with the EORTC QLQ C-30 and the PR25 preoperatively (t0) as well as postoperatively after 1-3 mo (t1), 4-6 mo (t2), 7-12 mo (t3), 13-24 mo (t4), and yearly thereafter (t5-t7). Surgeons were grouped according to their prior experience in laparoscopy into experienced and novices., Results: LRP was performed in 343 patients; 268 (78%) participated in the study. The mean patient age was 63.3+/-6.3 yr; mean PSA, 10.0+/-9.2 ng/ml; mean follow-up, 26 mo. Global health was impaired for t1 (p<0.001) and then returned to baseline. Emotional functioning improved (p<0.001) for t2-t7 versus baseline. Physical functioning remained impaired for t1-t2, and role and social functioning for t1-t6. Only sexual functioning did not return to baseline for t1-t7. Urinary symptoms were worse at t1 and then improved gradually (p<0.001). No significant difference in any QoL domain could be identified for experienced surgeons versus novices except for financial difficulties at t2-t3, which related to social differences. Thirty-one (9%) patients with adjuvant therapy had significantly worse global health, bowel symptoms, urinary symptoms, fatigue, and sexual functioning., Conclusions: The learning curve of laparoscopic novices does not have a negative impact on patients' QoL. For intermediate- to long-term follow-up, patients reach their baseline or score even better in all domains except for sexual functioning but are significantly impaired if adjuvant treatment is performed.
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- 2007
- Full Text
- View/download PDF
43. Intermediate-term results of retroperitoneoscopy-assisted cryotherapy for small renal tumours using multiple ultrathin cryoprobes.
- Author
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Wyler SF, Sulser T, Ruszat R, Weltzien B, Forster TH, Provenzano M, Gasser TC, and Bachmann A
- Subjects
- Aged, Aged, 80 and over, Female, Follow-Up Studies, Humans, Male, Middle Aged, Retroperitoneal Space, Time Factors, Cryotherapy methods, Kidney Neoplasms pathology, Kidney Neoplasms therapy, Laparoscopy
- Abstract
Objectives: To evaluate outcome after retroperitoneoscopic cryotherapy for small renal tumours., Methods: Fourteen patients underwent cryoablation performed with six ultrathin 1.5-mm cryoprobes. Retroperitoneoscopic access was used for any tumour location. A double freeze-thaw cycle was performed under simultaneous retroperitoneoscopic visual control and real-time ultrasound monitoring., Results: Mean tumour size was 2.8 cm (range: 2.0-4.0), mean patient age was 68 yr (range: 49-83), and six left and eight right kidneys were treated. The mean operative time was 167 min (range: 120-200); mean blood loss was 93 ml (range: 0-300). Cryosurgery was successfully performed in all 14 patients, with 13 patients undergoing assisted retroperitoneoscopy and one patient, after previous open nephropexy, undergoing an open approach. Intraoperative biopsy specimens revealed renal cell cancer (RCC) in 10 (71%) patients. The only intraoperative complication was bleeding after removal of the cryoprobes in four (29%) patients, necessitating one intracorporeal stitch in each. Two (14%) of the first four patients presented postoperatively with superficial skin frostbite, which healed with conservative treatment. During mean follow-up of 21 mo (range: 2-42), 2 (14%) patients died from unrelated disease, and 12 patients remained without evidence of local recurrence. One patient with previous contralateral nephrectomy for RCC developed retroperitoneal lymph node metastasis on that side without recurrence in the cryoablated kidney., Conclusions: Retroperitoneoscopic cryotherapy using multiple ultrathin cryoprobes is safe and effective with encouraging oncologic results on intermediate-term follow-up. Prospective clinical trials and long-term oncologic data are needed to define its definitive role in treatment of renal tumours.
- Published
- 2007
- Full Text
- View/download PDF
44. Safety and effectiveness of photoselective vaporization of the prostate (PVP) in patients on ongoing oral anticoagulation.
- Author
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Ruszat R, Wyler S, Forster T, Reich O, Stief CG, Gasser TC, Sulser T, and Bachmann A
- Subjects
- Administration, Oral, Aged, Aged, 80 and over, Follow-Up Studies, Humans, Male, Middle Aged, Prospective Studies, Prostatic Hyperplasia complications, Risk Factors, Safety, Anticoagulants administration & dosage, Prostatic Hyperplasia surgery, Transurethral Resection of Prostate adverse effects
- Abstract
Objectives: Ongoing oral anticoagulation (OA) contraindicates transurethral electroresection of the prostate. We evaluated the safety and effectiveness of photoselective vaporization of the prostate (PVP) in patients on ongoing OA with coumarin derivatives, aspirin, or clopidogrel, complaining of symptomatic benign prostatic hyperplasia (BPH)., Methods: We evaluated perioperative parameters, functional outcome, and adverse events up to 24 mo postoperatively of patients on OA, and compared results with 92 men at normal risk without anticoagulant therapy undergoing PVP for the same indication (control)., Results: Within 40 mo, 116 men on OA were included, with 31% (n=36) receiving coumarin derivatives; 61% (n=71), aspirin; and 8% (n=9), clopidogrel. Mean prostate volume (62+/-34ml vs. 57+/-25ml; p=0.289) and mean operation time (67+/-28min vs 63+/-29min; p=0.313) were comparable with control. We observed no bleeding complications necessitating blood transfusions. Average postoperative decrease of haemoglobin was 8.6% for patients on OA versus 8.8% for control. At 3, 6, 12, and 24 mo postoperatively, improvement of the International Prostate Symptom Score ranged from 60-70%; postvoid residual volume, 80-88%; and average maximum urinary flow rate, 116-140%, respectively. Postoperative complications were low and comparable with control., Conclusions: PVP is characterized by excellent haemostatic properties and very low intraoperative complication rate even in patients on OA. On the basis of our perioperative results, we recommend PVP as first-line procedure for patients with symptomatic BPH at high risk of bleeding.
- Published
- 2007
- Full Text
- View/download PDF
45. Photoselective vaporization of the prostate: subgroup analysis of men with refractory urinary retention.
- Author
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Ruszat R, Wyler S, Seifert HH, Reich O, Forster T, Sulser T, and Bachmann A
- Subjects
- Adult, Aged, Aged, 80 and over, Follow-Up Studies, Humans, Male, Middle Aged, Transurethral Resection of Prostate, Laser Therapy methods, Prostate surgery, Urinary Retention pathology
- Abstract
Objectives: The purpose of this study was to evaluate the feasibility and efficacy of photoselective vaporization of the prostate (PVP) in patients with refractory urinary retention (RUR) secondary to benign prostate hyperplasia (BPH)., Methods: Perioperative data, postoperative outcomes, and adverse events within 24 months in 70 patients with RUR were compared to 113 men with no urinary retention (NUR) before surgery., Results: Follow-up for the two groups was as follows (RUR vs. NUR at 1, 3, 6, 12, and 24 months): peak urinary flow rate: 16.9 vs. 19.4 ml/s, 16.3 vs. 20.9 ml/s, 17.7 vs. 19.7 ml/s, 18.2 vs. 21 ml/s, and 19.4 vs. 23.3 ml/s; International Prostate Symptom Score: 7.6 vs. 10.7, 7 vs. 7.5, 5.7 vs. 6.2, 5.5 vs. 6.5, and 4.4 vs. 6.5, respectively. Postoperative urinary retention and complication rates were comparable for the two groups. In five patients (2.7%), a reoperation with PVP or transurethral resection of the prostate was necessary. Bladder neck contracture and urethral stricture developed in 0.5% (n=1) and 4.9% (n=9), respectively., Conclusion: PVP seems to be a safe and effective surgical tool in patients with RUR caused by prostatic enlargement. The complication rate is comparable to that of patients with NUR before PVP.
- Published
- 2006
- Full Text
- View/download PDF
46. Laparoscopic extended pelvic lymph node dissection for high-risk prostate cancer.
- Author
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Wyler SF, Sulser T, Seifert HH, Ruszat R, Forster TH, Gasser TC, and Bachmann A
- Subjects
- Feasibility Studies, Humans, Lymphatic Metastasis, Male, Neoplasm Staging, Pelvis, Prospective Studies, Prostate-Specific Antigen blood, Prostatectomy, Prostatic Neoplasms blood, Prostatic Neoplasms surgery, Laparoscopy, Lymph Node Excision methods, Prostatic Neoplasms pathology
- Abstract
Introduction: Recently, some controversy has arisen as to whether pelvic lymphadenectomy is still necessary for patients with prostate cancer who are undergoing radical prostatectomy. We prospectively evaluated the results and morbidity of laparoscopic extended pelvic lymph node dissection in patients with high-risk prostate cancer defined as a serum prostate-specific antigen (PSA) level greater than 10 ng/mL or preoperative biopsy Gleason score of 7 or more., Technical Considerations: In 123 consecutive patients with clinically organ-confined high-risk prostate cancer, laparoscopic extended pelvic lymphadenectomy was performed before laparoscopic radical prostatectomy. The boundaries of the pelvic lymph node dissection were the bifurcation of the common iliac artery superiorly, the node of Cloquet inferiorly, the external iliac vein laterally, and the bladder wall medially. Preparation was done with bipolar forceps and scissors, with meticulous coagulation of all lymphatic tissue. The mean PSA level was 14.8 ng/mL (range 1.5 to 43.4). The mean number of lymph nodes removed was 21 (range 9 to 55). A total of 21 patients (17%) had lymph node metastases. The overall complication rate was 4%., Conclusions: Laparoscopic extended pelvic lymph node dissection is safe and effective. The results and morbidity are equivalent to those of open surgery, with the advantage of a minimally invasive operative technique.
- Published
- 2006
- Full Text
- View/download PDF
47. Ureteral obstruction after dextranomer/hyaluronic acid copolymer injection for treatment of secondary vesicoureteral reflux after renal transplantation.
- Author
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Seifert HH, Mazzola B, Zellweger T, Ruszat R, Muller A, Burkhalter F, Steiger J, Sulser T, and Bachmann A
- Subjects
- Dextrans administration & dosage, Female, Foreign-Body Reaction etiology, Humans, Injections, Middle Aged, Postoperative Complications, Dextrans adverse effects, Foreign-Body Reaction complications, Kidney Transplantation, Prostheses and Implants adverse effects, Ureteral Obstruction etiology, Vesico-Ureteral Reflux therapy
- Abstract
Ureteral obstruction after transurethral injection therapy for primary vesicoureteral reflux is known to occur in less than 1% of cases. We report the first case of a ureteral obstruction after transurethral injection of dextranomer/hyaluronic acid copolymer (Deflux) for the treatment of secondary vesicoureteral reflux after renal transplantation. Loss of transplant function made reimplantation of the ureter necessary. A periureteral phlebitis and moderate foreign body reaction was found histologically, although the patient had received immunosuppressive therapy. Endoscopic therapy of secondary vesicoureteral reflux in patients after renal transplantation is a reasonable minimally invasive treatment option; however, severe complications may occur.
- Published
- 2006
- Full Text
- View/download PDF
48. High-level virtual reality simulator for endourologic procedures of lower urinary tract.
- Author
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Reich O, Noll M, Gratzke C, Bachmann A, Waidelich R, Seitz M, Schlenker B, Baumgartner R, Hofstetter A, and Stief CG
- Subjects
- Surveys and Questionnaires, Computer Simulation, Cystoscopy, Ureteroscopy, Urologic Surgical Procedures education
- Abstract
Objectives: To analyze the limitations of existing simulators for urologic techniques, and then test and evaluate a novel virtual reality (VR) simulator for endourologic procedures of the lower urinary tract. Surgical simulation using VR has the potential to have a tremendous impact on surgical training, testing, and certification. Endourologic procedures seem to be an ideal target for VR systems., Methods: The URO-Trainer features genuine VR, obtained from digital video footage of more than 400 endourologic diagnostic and therapeutic procedures, as well as data from cross-sectional imaging. The software offers infinite random variations of the anatomy and pathologic features for diagnosis and surgical intervention. An advanced haptic force feedback is incorporated. Virtual cystoscopy and resection of bladder tumors were evaluated by 24 medical students and 12 residents at our department., Results: The system was assessed by more than 150 international urologists with varying experience at different conventions and workshops from March 2003 to September 2004. Because of these evaluations and constant evolutions, the final version provides a genuine representation of endourologic procedures. Objective data are generated by a tutoring system that has documented evident teaching benefits for medical students and residents in cystoscopy and treatment of bladder tumors., Conclusions: The URO-Trainer represents the latest generation of endoscopy simulators. Authentic visual and haptic sensations, unlimited virtual cases, and an intelligent tutoring system make this modular system an important improvement in computer-based training and quality control in urology.
- Published
- 2006
- Full Text
- View/download PDF
49. Photoselective vaporization (PVP) versus transurethral resection of the prostate (TURP): a prospective bi-centre study of perioperative morbidity and early functional outcome.
- Author
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Bachmann A, Schürch L, Ruszat R, Wyler SF, Seifert HH, Müller A, Lehmann K, and Sulser T
- Subjects
- Aged, Aged, 80 and over, Cystoscopy methods, Follow-Up Studies, Humans, Male, Middle Aged, Minimally Invasive Surgical Procedures methods, Pain, Postoperative diagnosis, Preoperative Care methods, Probability, Prospective Studies, Prostatic Hyperplasia complications, Prostatic Hyperplasia diagnosis, Risk Assessment, Severity of Illness Index, Statistics, Nonparametric, Treatment Outcome, Urinary Bladder Neck Obstruction surgery, Urinary Retention etiology, Urinary Retention physiopathology, Laser Therapy methods, Prostatic Hyperplasia surgery, Transurethral Resection of Prostate methods, Urinary Bladder Neck Obstruction etiology
- Abstract
Objectives: To compare the early follow-up and perioperative morbidity of photoselective vaporization (PVP) and transurethral resection of the prostate (TURP) in patients (pts.) suffering from lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH)., Material and Method: 101 pts. underwent PVP (n = 64) and TURP (n = 37) in a prospective, non-randomized bi-centre trial. Inclusion criteria were identical at both centres. Primary outcome parameters were maximum urinary flow rate (Q(max)), post-void residual volume (V(res)), International Prostate Symptom Score (IPSS). Secondary outcomes included intraoperative surgical parameters and perioperative and post-discharge morbidity., Results: Baseline characteristics of both groups were similar. Operating time was slightly shorter in the TURP group (p = 0.047). During TURP significant more irrigation solution was used (p < 0.001). Decrease of serum haemoglobin (p = 0.027) and serum sodium (p = 0.013) was larger after TURP. Catheter drainage was removed significant earlier after PVP than after TURP (p < 0.001). Outcome of Q(max), and IPSS were similar in both groups within 6 months. The sort of perioperative complications was different in both groups, however overall cumulative perioperative morbidity was comparable (PVP 39.1% versus TURP 43.2.1%; ns)., Conclusion: PVP provides excellent intraoperative safety, instant tissue removal, and immediate relief from obstructive voiding symptoms, similar to TURP. Early outcomes 6-months after PVP and TURP are comparable.
- Published
- 2005
- Full Text
- View/download PDF
50. Chyloretroperitoneum with secondary chylothorax after retroperitoneoscopic donor nephrectomy.
- Author
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Bachmann A, Ruszat R, Dickenmann M, Giannini O, Mayr M, Steiger J, Gasser TC, and Sulser T
- Subjects
- Chylothorax therapy, Chylous Ascites complications, Chylous Ascites therapy, Female, Humans, Middle Aged, Nephrectomy methods, Retroperitoneal Space, Tissue Donors, Chylothorax etiology, Chylous Ascites etiology, Living Donors, Nephrectomy adverse effects
- Abstract
A 59-year-old woman complained of increasing pain in the left abdomen and of diarrheal symptoms after left-sided retroperitoneoscopic living donor nephrectomy. Computed tomography revealed chyloretroperitoneum. The fluid was drained percutaneously, followed by recurrent drain replacement surgery. Her diet was changed to short-chain and medium-chain fatty acids without success. After onset of dyspnea due to chylothorax, the donor underwent thoracic drainage, fully parenteral therapy, and finally somatostatin application therapy. The postoperative management of severe chylous fistula is difficult. Therefore, we recommend an early start of maximal conservative therapy. Surgical options depend on pain occurrence or mechanical problems.
- Published
- 2005
- Full Text
- View/download PDF
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