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Relapse after cessation of desmopressin is an important problem in treating patients with enuresis. Structured withdrawal of desmopressin tablets has been shown to decrease relapse rates. However, scientific data are lacking on the structured withdrawal of the fast melting oral formulation of desmopressin. We compared relapse rates of structured withdrawal using placebo and direct cessation in a population of patients with enuresis who were desmopressin responders.Patients diagnosed with enuresis and responding to desmopressin from 13 different centers were involved in the study. Patients were randomized into 4 groups. Two different structured withdrawal strategies were compared to placebo and direct withdrawal. Sample size was estimated as 240 (60 patients in each group), with a power of 0.80 and an effect size of 30%. Randomization was performed using NCSS statistical software (NCSS, Kaysville, Utah) from a single center. The relapse rates of the groups were compared using chi-square testing. Logistic regression analysis was performed to define the independent factors having an effect on relapse rates.Desmopressin treatment was initiated in 421 patients, and 259 patients were eligible for randomization. Relapse rates were 39 (1%) and 42 (4%) for the structured withdrawal groups, which were significantly less than for direct withdrawal (55, 3%) and placebo (53, 1%). Logistic regression analysis revealed that initial effective dose of 240 μcg, greater number of wet nights before treatment and nonstructured withdrawal were associated with higher relapse rates.We found that structured withdrawal with the fast melting oral formulation of desmopressin results in decreased relapse rates. Application of a structured withdrawal program was also an independent factor associated with reduced relapse rates, together with lower initial effective dose and number of wet nights per week. Relapse after cessation of desmopressin is an important problem, and in this study structured withdrawal was observed to be associated with decreased relapse rates compared to placebo and direct withdrawal.

We determined the rate of stone clearance in children following percutaneous nephrolithotomy, endoscopic assessment of residual stone and the judicious use of second look nephroscopy.We retrospectively reviewed the charts of all children undergoing percutaneous nephrolithotomy from 1996 to 2007. Cases were reviewed for pertinent details including preoperative and postoperative imaging, specifics of the procedure and followup. On completion of percutaneous nephrolithotomy the collecting system was assessed via combined nephrostogram and direct nephroscopy. If the collecting system could not be completely visualized or all stone fragments could not be cleared, the patient was referred for second look nephroscopy. Any residual stone present on initial followup imaging constituted a treatment failure.A total of 24 patients underwent percutaneous nephrolithotomy for 30 separate renal calculi. Mean patient age was 9.6 years, and mean stone burden was 2.53 cm. The success rate for percutaneous nephrolithotomy (inclusive of second look nephroscopy) was 87%. Of 30 cases 16 were managed by second look nephroscopy, with findings of residual fragments in all 16. Treatment failure was noted in 1 patient without second look nephroscopy and in 3 patients with second look nephroscopy. Of the 4 patients with treatment failure all were eventually rendered stone-free.Second look nephroscopy based on endoscopic findings during initial percutaneous nephrolithotomy is a reliable method of detecting and clearing residual stone fragments. Using such a protocol we achieved a high success rate of stone clearance in a population of patients with a significant stone burden.

We assessed the impact of intermittent tamsulosin treatment on abnormal ejaculation.This prospective study was performed between January 2001 and December 2004. It included 405 patients who were at least 50 years old with lower urinary tract symptoms. This study was divided into 2 phases. In phase 1 patients received a 0.4 mg tamsulosin capsule daily after breakfast for at least 3 months. The second phase of this study was performed in the 30 patients with abnormal ejaculation. In this phase these patients received 0.4 mg tamsulosin once daily every other day. Patients were assessed at study entry and at study week 6.Abnormal ejaculation was reported as retrograde ejaculation by 18 patients, as decreased volume by 7 and as absent ejaculate by 5. Ejaculatory function recovered during intermittent tamsulosin treatment in 12 patients with retrograde ejaculation and in 7 with decreased volume or absent ejaculate. As a result, 19 of 30 patients (63.3%) with abnormal ejaculation recovered. A significant improvement in retrograde ejaculation was found after intermittent tamsulosin treatment (p = 0.02). Although there were improvements in decreased volume or absent ejaculate at week 6 of intermittent treatment, these differences were not statistically significant (p = 0.42 and 0.61, respectively).The results of the current study, which to our knowledge is the first report of the effect of intermittent tamsulosin treatment on abnormal ejaculation, show that this treatment modality is well tolerated and provides comparable improvements for abnormal ejaculation.

We studied the effects of biofeedback treatment on voiding and urodynamic parameters in children with voiding dysfunction.We prospectively studied 188 children between June 1998 and November 2003. Biofeedback was performed with a urodynamics processor that enables simultaneous recording of urine flow and electromyography, and visual display of flow/electromyography activity. At the beginning of the study this treatment was performed once weekly. After patients understood the concept and performed homework regularly sessions were scheduled at 3 to 4-week intervals and continued for 6 months. All children were evaluated at 6 months and again at 2 years after completing biofeedback training.The number of the children completing biofeedback was 168 (89.4%). Improvement was obtained in all parameters, ranging from 59.2% to 87.8% at 6 months. Maximum improvement was acquired with flattened voiding in 65 of 74 children (87.8%), whereas the least improvement was acquired with daytime wetting in 58 of 98 children (59.2%). These improvements continued at 2-year followup, and ranged from 53.1% to 87.3%. While the rate of improvement for nocturnal enuresis, staccato voiding, detrusor-sphincter dyssynergia, vesicoureteral reflux and urinary tract infection had increased, the remaining parameters had decreased at 2-year followup.Biofeedback training is a simple, effective and well tolerated treatment modality in children for various parameters resulting from bladder dysfunction. Motivation and willingness to participate in biofeedback treatment are important selection criteria.

We studied the effect of varicocele ligation on Kruger strict morphology criteria and semen parameters in patients with infertility.A total of 90 patients diagnosed with varicoceles and a normal morphological sperm ratio of less than 14% were evaluated before and 6 months after varicocelectomy. Preoperatively and postoperatively sperm density, motility and morphology using Kruger strict criteria were analyzed. The Wilcoxon test was used to measure levels of statistical significance in all analyses.Significant improvement in sperm concentration and motility was evident after varicocele ligation (p0.0002 and0.0001, respectively). Using the Kruger classification sperm morphology evaluation revealed a significant increase in the percent of normal forms, and of forms with head and acrosome defects (p0.0001,0.0014 and0.0028, respectively). There were no concomitant changes in strict morphology in forms with mid piece and tail defects or immature forms (p0.05). Of the 90 patients 18 (20%) achieved a successful full-term pregnancy, including 14 via natural cycle intercourse and 4 by intrauterine insemination.Surgical correction of varicocele was associated with significant improvement in density, motility and sperm morphology evaluated using the Kruger classification.

To find answers about preventing the colonic mucosal regrowth after seromuscular enterocystoplasty and the dissection pane, we performed an experimental study in dogs. We also report our experience with mucosal regrowth and bladder function after augmentation colocystoplasty.This study comprised 10 adult healthy female mongrel dogs. We performed this animal experiment in 2 stages. At stage 1 we constructed a low capacity bladder. Stage 2 was performed 6 months after stage 1. At the end of detrusorectomy a 15 cm. segment of sigmoid colon was detubularized. The animals were randomly divided into 2 groups. In the 5 group 1 dogs de-epithelialization was performed with needle point cautery at a low cut setting, and the mucosa, muscularis mucosa and submucosa were resected, leaving the fibers of the muscularis externa exposed. In the 5 group 2 dogs de-epithelialization was performed by the peeling technique, in which the dissection plane was developed between the mucosa and muscularis mucosa, and the muscularis mucosa and submucosa remained on the colonic muscle. The de-epithelialized patch of bowel was shaped as a cup patch and anastomosed to the edges of the detrusor muscle over the bulging urothelium. The animals were sacrificed at 12 months of followup. All bladders were inspected macroscopically for regrowth of the colonic mucosa. Multiple sections of the augmentation patches were obtained and processed routinely for histological evaluation to determine what happened to the urothelium.We noted good urodynamic results in all dogs and there was no statistical difference in the groups in regard to bladder capacity. Mucosal regrowth did not develop in either group.When dissection is performed successfully whether or not the submucosa is removed, there is no observed regrowth or loss of bladder capacity in either technique.

Parviz Hajiyev*, Berk Burgu, Evren Suer, Yusuf Kibar, Ankara, Turkey; Mesrur Selcuk Silay, Istanbul, Turkey; Serhat Gurocak, Hasan Serkan Dogan, Hasan Cem Irkilata Irkilata, Ankara, Turkey; Tayfun Oktar, Bulent Onal, Istanbul, Turkey; Erim Erdem, Mersin, Turkey; Yuksel Cem Aygul, Ankara, Turkey; Cem Balcý, Ahmet Ruknettin Aslan, Istanbul, Turkey; Tarkan Soygur, Ankara, Turkey; Þaban Sarýkaya, Samsun, Turkey; Serdar Tekgul, Ankara, Turkey

reflexic neurogenic bladder with DSD (n 16) was markedly decreased compared with other types of neurogenic bladder. After oxybutynine treatment, bladder compliance was improved in all neurogenic bladder types (Table 1). The renal cortical lesion was aggravated in 3 children (18.8%) of the i®areflexia with high leak pressurei type, 1 (5.0%) of the i®hyperreflexia with DSDi type, and 2 (7.1%) of the i®hyperreflexia without DSDi type (Figure 1). CONCLUSIONS: Oral oxybutynin chloride treatment markedly improved the maximum cystometric capacity in all neurogenic bladder types although increases in maximum cystometric capacity/ estimated bladder capacity were limited. Patients with low compliance, areflexic neurogenic bladder with high leak pressure requires specific attention as this type has worse detrusor compliance.

Objectives We researched the survival of bone marrow-derived mesenchymal stem cells (MSCs) and the results of MSCs’ injected into decompensated bladders in a rabbit model.