14 results on '"Weller JF"'
Search Results
2. Rate of Revision Surgery and Associated Risk Factors After Primary Arthroscopic ACL Repair With Additional Suture Augmentation.
- Author
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Schneider KN, Theil C, Gosheger G, Weller JF, Goth A, and Ahlbaeumer G
- Abstract
Background: Recent studies have suggested promising patient-reported outcomes after primary anterior cruciate ligament (ACL) repair with additional suture augmentation (SA)., Purpose: To evaluate the risk for revision surgery and identify patient- and injury-related risk factors after ACL repair with SA in a large patient cohort subject to strict patient selection., Study Design: Case-control study; Level of evidence, 3., Methods: Included were 86 patients (61 female; 93% follow-up rate) who underwent arthroscopic ACL repair with SA between January 2017 and March 2019 by a single surgeon and had a minimum follow-up of 24 months. Patients were selected for surgery with regard to time to surgery (preferably on the day of injury), tear pattern (limited to Sherman types 1 and 2), and tissue quality (intact synovial coverage). Postoperatively, the patients who needed revision surgery were identified and compared with patients who did not undergo revision surgery, using the Mann-Whitney U test for nonparametric analysis and the Student t test for parametric analysis. A Kaplan-Meier analysis was performed to investigate the survival rate of the ACL repair., Results: A total of 9 patients (10%; median age, 48 years; interquartile range [IQR], 27-50 years) underwent revision surgery at 12 months postoperatively (IQR, 8-25 months). The median follow-up of patients without revision surgery was 35 months (IQR, 33-44 months). The revision-free survival rate was 97% (95% CI, 93%-100%) after 1 year, 93% (95% CI, 88%-98%) after 2 years, and 90% (95% CI, 83%-97%) after 4 years. Patient-related factors-such as sex ( P = .98), age at surgery ( P = .459), body mass index ( P = .352), and preinjury level of sports ( P = .53)-had no significant impact on the survival rate of the ACL repair. Injury-related factors-such as concomitant injuries of the medial ( P = .860) and lateral menisci ( P = .414) and the medial ( P = .801) and lateral collateral ligaments ( P = .534) or same-day surgery compared with a delay of surgery of up to 18 days ( P = .277)-had no significant impact on the survival rate of the ACL repair., Conclusion: The revision rate of primary ACL repair with SA at a 2-year follow-up was 10%. Patient- and injury-related factors were not associated with the survival rate of the ACL repair., Competing Interests: The authors have declared that there are no conflicts of interest in the authorship and publication of this contribution. AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto. Ethical approval for this study was obtained from Verfügung der Kanotonalen Ethikkommission Zürich (ref No. 2019-00758)., (© The Author(s) 2024.)
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- 2024
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3. Clonal haematopoiesis: A common progenitor for cytotoxic peripheral T-cell lymphoma and angioimmunoblastic T-cell lymphoma.
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Vogelsberg A, Harland L, Borgmann V, Otto F, Weller JF, Nann D, Quintanilla-Martinez L, and Fend F
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- Aged, Humans, Lymphoma, T-Cell pathology, Lymphoma, T-Cell genetics, Mutation, Clonal Hematopoiesis, Immunoblastic Lymphadenopathy pathology, Immunoblastic Lymphadenopathy genetics, Lymphoma, T-Cell, Peripheral genetics, Lymphoma, T-Cell, Peripheral pathology
- Abstract
Recent studies have shown that follicular helper T-cell lymphoma of angioimmunoblastic type (AITL), the most common nodal peripheral T-cell lymphoma (PTCL), frequently arises in a background of clonal haematopoiesis (CH), a preneoplastic condition affecting up to 40% of elderly individuals. Data on a potential CH association are limited for other PTCL. We report a unique patient who sequentially developed both cytotoxic PTCL, not otherwise specified and AITL with distinct T-cell receptor rearrangements but shared somatic mutations originating from the same CH clone, thus providing convincing evidence that CH can give rise to T-cell neoplasms of different lineage., (© 2024 The Authors. British Journal of Haematology published by British Society for Haematology and John Wiley & Sons Ltd.)
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- 2024
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4. Allogeneic hematopoietic stem cell transplantation in patients aged 60-79 years in Germany (1998-2018): a registry study.
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Weller JF, Lengerke C, Finke J, Schetelig J, Platzbecker U, Einsele H, Schroeder T, Faul C, Stelljes M, Dreger P, Blau IW, Wulf G, Tischer J, Scheid C, Elmaagacli A, Neidlinger H, Flossdorf S, Bornhäuser M, Bethge W, Fleischhauer K, Kröger N, De Wreede LC, and Christopeit M
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- Humans, Transplantation, Homologous adverse effects, Germany epidemiology, Chronic Disease, Transplantation Conditioning adverse effects, Recurrence, Retrospective Studies, Hematopoietic Stem Cell Transplantation adverse effects, Graft vs Host Disease epidemiology, Graft vs Host Disease etiology
- Abstract
Incidences of diseases treated with transplantation frequently peak at higher age. The contribution of age to total risk of transplantation has not been estimated amidst an aging society. We compare outcomes of 1,547 patients aged 70-79 years and 9,422 patients aged 60-69 years transplanted 1998-2018 for myeloid, lymphoid and further neoplasia in Germany. To quantify the contribution of population mortality to survival, we derive excess mortality based on a sex-, year- and agematched German population in a multistate model that incorporates relapse and graft-versus-host-disease (GvHD). Overall survival, relapse-free survival (RFS) and GvHD-free-relapse-free survival (GRFS) is inferior in patients aged 70-79 years, compared to patients aged 60-69 years, with 36% (95% Confidence Interval [CI]: 34-39%) versus 43% (41-44%), 32% (30- 35%) versus 36% (35-37%) and 23% (21-26%) versus 27% (26-28%) three years post-transplant (P<0.001). Cumulative incidences of relapse at three years are 27% (25-30%) for patients aged 70-79 versus 29% (29-30%) (60-69 years) (P=0.71), yet the difference in non-relapse mortality (NRM) (40% [38-43%] vs. 35% [34-36%] in patients aged 70-79 vs. 60-69 years) (P<0.001) translates into survival differences. Median OS of patients surviving >1 year relapse-free is 6.7 (median, 95% CI: 4.5-9.4, 70-79 years) versus 9 (8.4-10.1, 60-69 years) years since landmark. Three years after RFS of one year, excess NRM is 14% (95% CI: 12-18%) in patients aged 70-79 versus 12% [11-13%] in patients aged 60-69, while population NRM is 7% (6-7%) versus 3% (3-3%). Mortality for reasons other than relapse, GvHD, or age is as high as 27% (24-29%) and 22% (22-23%) four years after transplantation. In conclusion, survival amongst older patients is adequate after allogeneic stem cell transplantation.
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- 2024
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5. Aspirin improves transplant-free survival after TIPS implantation in patients with refractory ascites: a retrospective multicentre cohort study.
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Seifert LL, Schindler P, Sturm L, Gu W, Seifert QE, Weller JF, Jansen C, Praktiknjo M, Meyer C, Schoster M, Wilms C, Maschmeier M, Schmidt HH, Masthoff M, Köhler M, Schultheiss M, Huber JP, Bettinger D, Trebicka J, Wildgruber M, and Heinzow H
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- Ascites etiology, Aspirin therapeutic use, Cohort Studies, Gastrointestinal Hemorrhage etiology, Gastrointestinal Hemorrhage surgery, Humans, Liver Cirrhosis etiology, Retrospective Studies, Treatment Outcome, Esophageal and Gastric Varices etiology, Portasystemic Shunt, Transjugular Intrahepatic adverse effects
- Abstract
Background and Aims: Transjugular intrahepatic portosystemic shunt (TIPS) implantation is an established procedure to treat portal hypertension. Impact of administration of aspirin on transplant-free survival after TIPS remains unknown., Methods: A multicenter retrospective analysis including patients with TIPS implantation between 2011 and 2018 at three tertiary German Liver Centers was performed. N = 583 patients were included. Survival analysis was performed in a matched cohort after propensity score matching. Patients were grouped according to whether aspirin was (PSM-aspirin-cohort) or was not (PSM-no-aspirin-cohort) administered after TIPS. Primary endpoint of the study was transplant-free survival at 12 months after TIPS., Results: Aspirin improved transplant-free survival 12 months after TIPS with 90.7% transplant-free survival compared to 80.0% (p = 0.001) after PSM. Separated by TIPS indication, aspirin did improve transplant-free survival in patients with refractory ascites significantly (89.6% vs. 70.6% transplant-free survival, p < 0.001), while no significant effect was observed in patients with refractory variceal bleeding (91.1% vs. 92.2% transplant-free survival, p = 0.797)., Conclusion: This retrospective multicenter study provides first data indicating a beneficial effect of aspirin on transplant-free survival after TIPS implantation in patients with refractory ascites., (© 2022. The Author(s).)
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- 2022
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6. Time-dependent analysis of adoptive immunotherapy following sequential FLAMSA-reduced intensity conditioning and allogeneic hematopoietic stem cell transplantation in patients with high-risk myeloid neoplasia.
- Author
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Weller JF, Mezger M, Seifert LL, Vogel W, Schneidawind D, Faul C, Bethge W, Lengerke C, and Christopeit M
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- Humans, Immunotherapy, Adoptive adverse effects, Neoplasm Recurrence, Local, Retrospective Studies, Transplantation Conditioning adverse effects, Graft vs Host Disease etiology, Graft vs Host Disease prevention & control, Hematopoietic Stem Cell Transplantation adverse effects, Leukemia, Myeloid, Acute complications
- Abstract
Prophylactic donor lymphocyte infusions (DLI) are part of the sequential FLAMSA-reduced intensity conditioning (RIC) regimen to cure high risk myeloid neoplasia with allogeneic hematopoietic stem cell transplantation (HSCT). Although DLI themselves carry significant risks, their prophylactic use has not been analyzed in a time-dependent manner. One hundred and fourteen patients underwent FLAMSA-RIC HSCT between 2013 and 2020. Next to Kaplan-Meier estimation of overall, disease-free, and graft-versus-host relapse-free survival (OS, DFS, GRFS), cumulative incidences of relapse and death in remission were calculated in a competing risk model. Additionally, the contribution of prophylactic and preemptive DLI as time-dependent covariates was assessed using a time-varying model toward DFS (Simon-Makuch method, Mantel-Byar test). At 2 years, OS was 45.2% [95% CI 36.7-55.7%], DFS 31.8% [95% CI 24-42.2%] and GRFS 11.3 [95% CI 6.5-19.8]. Neither prophylactic nor preemptive DLI showed a significant influence on DFS when considered time-dependent covariates (Mantel-Byar, p = .3). This was further corroborated in competing risk analysis with DLI as time-dependent covariates. Both prophylactic and preemptive DLI miss significance in their impact on survival within a high-risk cohort in a time-varying model. Controlled trials to address the impact of postgrafting immunotherapy approaches are needed., (© 2021 The Authors. European Journal of Haematology published by John Wiley & Sons Ltd.)
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- 2022
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7. Recurrence of Hepatic Encephalopathy after TIPS: Effective Prophylaxis with Combination of Lactulose and Rifaximin.
- Author
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Seifert LL, Schindler P, Schoster M, Weller JF, Wilms C, Schmidt HH, Maschmeier M, Masthoff M, Köhler M, Heinzow H, and Wildgruber M
- Abstract
Background: Transjugular intrahepatic portosystemic shunt (TIPS) implantation is an established procedure to treat portal hypertension with hepatic encephalopathy (HE) as a common complication. There is lack of evidence concerning HE prophylaxis after TIPS., Methods: N = 233 patients receiving TIPS between 2011 and 2018 at a German tertiary care center were included. Of them, 21% (n = 49) had a history of HE. The follow-up period was 12 months. The risk factors of post-TIPS HE were analyzed via multivariate analysis. The efficacy of prophylactic medication regimens was studied. The results show that 35.6% (n = 83) received no medication ( NM ), 36.5% (n = 85) received lactulose monoprophylaxis ( LM ), 2.6% (n = 6) rifaximin monoprophylaxis ( RM ) and 25.3% (n = 59) lactulose and rifaximin ( LR ) of which 64.4% received l-ornithin-l-aspartate ( LOLA ) additionally ( LR + LOLA ) and 36.6% did not ( LRonly )., Results: Multivariate analysis revealed higher age ( p = 0.003) and HE episodes prior to TIPS ( p = 0.004) as risk factors for HE after TIPS. LM has no prophylactic effect. LR prevents HE recurrence at 1, 3 and 12 months after TIPS ( p = 0.003, p = 0.003, p = 0.006) but does not prevent HE in patients with no history of HE ( p = 0.234, p = 0.483, p = 0.121). LR prevents HE recurrence compared with LM/NM (25.0% vs. 64.7%, p = 0.007) within 12 months after TIPS, whereas de novo occurrence is unaffected ( p = 0.098). The additional administration of LOLA to LR has no benefit ( LRonly : 25.0%, LR + LOLA : 29.7%, p = 0.780)., Conclusions: Higher age and previous HE are risk factors post-TIPS HE. In patients with HE prior to TIPS, effective prophylaxis of HE is feasible via combination of lactulose and rifaximin with no additional benefit from LOLA .
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- 2021
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8. Arthroscopic Anterior Cruciate Ligament Re-Repair Using Internal Brace Augmentation - A Case Report.
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Schneider KN, Weller JF, K Buddhdev P, and Ahlbäumer G
- Abstract
Introduction: Anterior cruciate ligament (ACL) tears are among the most common orthopedic injuries. In the demanding athletic patient, autograft ACL reconstruction is recognized as the gold standard treatment. However, there is a renewed interest in the preservation and repair of the torn ACL. Despite good to excellent clinical short-to mid-termresults of ACL primary repair, there are currently no reports of a successful secondary ACL repair following a retear of a primary ACL repair., Case Report: We report the successful secondary ACL repair of a 47-year-old athletic female patient who initially fell while skiing, suffering a left proximal ACL tear that was subsequently treated with an arthroscopic ACL repair using internal brace augmentation. The patient was administered to intensive post-operative physiotherapy and aquatic therapy as well as continuous follow-up visits where the pain-free patient demonstrated a full range of motion with negative Lachman, Drawer, and pivot shift tests. Ten weeks postoperatively, the patient returned to sports - including alpine skiing 3 months postoperatively. Just 1 week after, her 1-year follow-upvisit, the patient experienced another severe ski fall suffering a proximal ACL retear to her left knee. She underwent arthroscopic ACL repair using internal brace augmentation on the same day. The patient returned to sports 10-week post-injury and demonstrated a full range of knee motion, negative Lachman, Drawer, and pivot shift tests with a 1.0mm side-to-side laxity difference at 12-month follow-up with good subjective outcome parameters: International Knee Documentation Committee score of 83, Lysholm score of 95, and a pre-and post-operative Tegner score of 7. Again, she returned to alpine skiing 3 months postoperatively., Conclusion: Arthroscopic ACL re-repair using internal brace augmentation is feasible and provides objective and subjective short-term clinical success as a revision surgery for primary ACL repair with internal brace augmentation. However, critical patient selection - including assessment of the ACL retear pattern and tissue quality - and prompt surgery are essential., Competing Interests: Conflict of Interest: Nil, (Copyright: © Indian Orthopaedic Research Group.)
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- 2019
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9. Does neuraxial anesthesia reduce intraoperative blood loss? A meta-analysis.
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Richman JM, Rowlingson AJ, Maine DN, Courpas GE, Weller JF, and Wu CL
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- Anesthesia, General, Female, Humans, Male, Retrospective Studies, Anesthesia, Epidural, Anesthesia, Spinal, Blood Loss, Surgical prevention & control
- Abstract
Study Objective: To perform a meta-analysis of available randomized controlled trials to determine if neuraxial anesthesia would decrease blood loss, compared with general anesthesia., Design: Retrospective analysis., Setting: University medical center., Measurements: The National Library of Medicine's PubMed database was searched from the period of 1966 to December 10, 2003 for all abstracts containing words related to neuraxial anesthesia and general anesthesia. The search was limited to randomized controlled trials and the English language and yielded 667 articles., Main Results: A total of 66 articles met inclusion criteria and were used for the analysis. Overall, the use of spinal anesthesia resulted in significantly less estimated blood loss (EBL) (P < 0.0001), compared with epidural anesthesia (EA), which, in turn, resulted in significantly less EBL compared with general anesthesia (GA) or combined GA-EA (P < 0.0001). No significant difference between GA and GA-EA was noted when analysis was limited to studies directly comparing GA-EA and GA., Conclusions: Use of spinal anesthesia or EA is associated with a significant decrease in EBL when compared with that for GA or combined GA-EA.
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- 2006
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10. Spinal anesthesia for a patient with familial hyperkalemic periodic paralysis.
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Weller JF, Elliott RA, and Pronovost PJ
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- Humans, Male, Middle Aged, Anesthesia, Spinal methods, Paralysis, Hyperkalemic Periodic physiopathology
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- 2002
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11. Indiffused waveguides: effects of thin film overlays.
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Weller JF and Giallorenzi TG
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- 1975
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12. Optical Kerr effect in fiber gyroscopes: effects of nonmonochromatic sources.
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Frigo NJ, Taylor HF, Goldberg L, Weller JF, and Rashleigh SC
- Abstract
The effects of source bandwidth on the optical Kerr effect are calculated. We show that the nonreciprocal Kerr bias error in fiber gyroscopes may be substantially reduced by using broadband sources.
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- 1983
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13. Injection-beam parameter optimization of an injection-locked diode-laser array.
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Chun MK, Goldberg L, and Weller JF
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The dependence of the far-field distribution of an externally injection-locked array on the width and power of the injected beam was determined by numerical simulation. The fraction of total power contained in the diffraction-limited lobe portion of the far field was significantly larger for wide-beam injection (95%) than for single-point injection (70%). Qualitative agreement with experimental results using a 20-element array was observed.
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- 1989
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14. Sputtered thin films for integrated optics.
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Deitch RH, West EJ, Giallorenzi TG, and Weller JF
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- 1974
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