Guidelines for vulvar and vaginal surgery: Enhanced Recovery After Surgery Society recommendations.

This is the first collaborative Enhanced Recovery After Surgery Society guideline for optimal perioperative care for vulvar and vaginal surgeries. An Embase and PubMed database search of publications was performed. Studies on each topic within the Enhanced Recovery After Surgery vulvar and vaginal outline were selected, with emphasis on meta-analyses, randomized controlled trials, and prospective cohort studies. All studies were reviewed and graded according to the Grading of Recommendations, Assessment, Development and Evaluation system. All recommendations on the Enhanced Recovery After Surgery topics are based on the best available evidence. The level of evidence for each item is presented.

Validity: applying current concepts and standards to gynecologic surgery performance assessments.

Validity is critical for meaningful assessment of surgical competency. According to the Standards for Educational and Psychological Testing, validation involves the integration of data from well-defined classifications of evidence. In the authoritative framework, data from all classifications support construct validity claims. The two aims of this study were to develop a categorization method for validity evidence published in support of surgery performance assessments and to summarize the results of applying this methodology to the gynecologic surgery literature. This was a critical analysis of published observations reported as validity evidence in studies with a construct validity claim. Medline and Embase databases were searched using keywords: "surgery" and "construct validity". Parameters included English-language articles published from 2000 to 2012. Gynecologic studies were analyzed for definitions of construct validity and nonstandard terminology. Categorization criteria were developed and applied by the researchers to all observations. Two independent evaluators examined reported observations for compliance with guidelines provided by the Standards. Inter-rater agreement was calculated using weighted kappa. The initial search returned 167 articles. Twenty-five articles were left for inclusion in our analysis. Eighteen (72 %) articles defined construct validity as the ability to discriminate between expert and novice levels of proficiency. Within the sample, 80 discrete observations of reported validity evidence were identified and categorized according to standard classifications. Nearly 30 % of all published observations intended to demonstrate differences in performance by level of proficiency, 25 % described a scoring model, and 14 % demonstrated support of assessment content. Not one article contained a statistical correlation between assessment scores and objective outcomes from the authentic surgical environment. Medians for level of rigor ranged from 0 to 1 across all forms of evidence. Weighted kappa values ranged 0.60-0.91. Validity claims in gynecologic surgical assessment over-rely on generalizability evidence. No test-criterion evidence was observed. Increased awareness of current standards and systematic argument development is needed for gynecologic performance assessments.

Obstetric laceration repair in the United States: is there a common practice?

OBJECTIVE: To assess practice preferences in the repair of severe obstetric lacerations among obstetrician/gynecologists in the United States. STUDY DESIGN: A survey detailing third and fourth degree laceration repair techniques was distributed to 634 obstetrician/gynecologists from demographically diverse areas of the United States. Categorical outcomes were compared among respondents using chi2 or Fisher's exact test where appropriate. RESULTS: Of the 266 respondents, there were 124 self-reported "experts" (47%) and 106 physicians-in-training (40%). Repair techniques were compared between experts versus nonexperts and trainees versus practicing physicians. There were no significant differences found between either comparison group on the type and size of suture utilized or preferred method of closure for repair. CONCLUSION: There is little variation in the practice pattern of complex laceration repairs among obstetrician-gynecologists in the United States. This commonality should encourage the design of standard teaching models and techniques for physicians in training.

Compounded estradiol cream: a cost conscious alternative.

BACKGROUND: Vaginal estrogen is a common therapy for many gynecologic conditions. Medication cost poses a barrier to medication compliance. The purpose of our study is to report patient cost savings by utilizing compounding pharmacies in the preparation of topical vaginal estrogen. METHODS: A survey of 10 topical vaginal estrogen compounding pharmacies was performed and prescription cost data was obtained. The University of Oklahoma Outpatient Pharmacy and the 2008 Wolters Kluwer Health Pharmaceutical Audit Suite were cost comparisons for compounded estrogen. All data was processed using statistical software yielding descriptive statistics. RESULTS: The average cost of compounded estrogen was $42.22. At the University of Oklahoma Outpatient Pharmacy, average cost for branded vaginal estrogen preparation was $137.70. The national cost average for branded vaginal estrogen preparations was $82.42. Cost savings of $94.98 (69%) locally and $40.20 (51%) nationally was identified. CONCLUSIONS: Compounded estrogen is a cost conscious alternative than branded preparations.

Effects of Obesity on Urogynecologic Prolapse Surgery Outcomes: A Systematic Review and Meta-analysis.

OBJECTIVE: To systematically review the literature on outcomes of pelvic organ prolapse (POP) surgery in patients from various body mass index (BMI) categories to determine the association between obesity and surgical outcomes. DATA SOURCES: PubMed, EMBASE, and Cochrane databases were searched from inception to April 12, 2022; ClinicalTrials.gov was searched in September 2022 (PROSPERO 2022 CRD42022326255). Randomized and nonrandomized studies of urogynecologic POP surgery outcomes were accepted in which categories of BMI or obesity were compared. METHODS OF STUDY SELECTION: In total, 9,037 abstracts were screened; 759 abstracts were identified for full-text screening, and 31 articles were accepted for inclusion and data were extracted. TABULATION, INTEGRATION, AND RESULTS: Studies were extracted for participant information, intervention, comparator, and outcomes, including subjective outcomes, objective outcomes, and complications. Outcomes were compared among obesity categories (eg, BMI 30-34.9, 35-40, higher than 40), and meta-analysis was performed among different surgical approaches. Individual studies reported varying results as to whether obesity affects surgical outcomes. By meta-analysis, obesity (BMI 30 or higher) is associated with an increased odds of objective prolapse recurrence after vaginal prolapse repair (odds ratio [OR] 1.38, 95% CI, 1.14-1.67) and after prolapse repair from any surgical approach (OR 1.31, 95% CI, 1.12-1.53) and with complications such as mesh exposure after both vaginal and laparoscopic POP repair (OR 2.10, 95% CI, 1.01-4.39). CONCLUSION: Obesity is associated with increased likelihood of prolapse recurrence and mesh complications after POP repair. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42022326255.

Evaluation of vaginal cysts and masses by 3-dimensional endovaginal and endoanal sonography.

The purpose of this pictorial essay is to describe the utility of 3-dimensional endovaginal and endoanal sonography in the assessment of vulvovaginal cysts and masses. It is accepted that compared with transabdominal pelvic sonography, transvaginal end-fire sonography provides improved resolution for visualization of female reproductive organs with fewer artifacts. To visualize the structures that are located in or lateral to the vaginal canal, side-fire 3-dimensional endovaginal or endoanal sonography can be used. This special technique has the advantage of maintaining the spatial anatomic relationship of any abnormality in the vagina.

Medium-Term Outcomes of Conservative and Surgical Treatments for Stress Urinary Incontinence: A Medicare Claims Analysis: Developed by the AUGS Payment Reform Committee.

OBJECTIVE: This study aimed to evaluate the 3- to 5-year retreatment outcomes for conservatively and surgically treated urinary incontinence (UI) in a population of women 66 years and older. METHODS: This retrospective cohort study used 5% Medicare data to evaluate UI retreatment outcomes of women undergoing physical therapy (PT), pessary treatment, or sling surgery. The data set used inpatient, outpatient, and carrier claims from 2008 to 2016 in women 66 years and older with fee-for-service coverage. Treatment failure was defined as receiving another UI treatment (pessary, PT, sling, Burch urethropexy, or urethral bulking) or repeat sling. A secondary analysis was performed where additional treatment courses of PT or pessary were also considered a treatment failure. Survival analysis was used to evaluate the time from treatment initiation to retreatment. RESULTS: Between 2008 and 2013, 13,417 women were included with an index UI treatment, and follow-up continued through 2016. In this cohort, 41.4% received pessary treatment, 31.8% received PT, and 26.8% underwent sling surgery. In the primary analysis, pessaries had the lowest treatment failure rate compared with PT (P<0.001) and sling surgery (P<0.001; survival probability, 0.94 [pessary], 0.90 [PT], 0.88 [sling]). In the analysis where retreatment with PT or a pessary was considered a failure, sling surgery had the lowest retreatment rate (survival probability, 0.58 [pessary], 0.81 [PT], 0.88 [sling]; P<0.001 for all comparisons). CONCLUSIONS: In this administrative database analysis, there was a small but statistically significant difference in treatment failure among women undergoing sling surgery, PT, or pessary treatment, but pessary use was commonly associated with the need for repeat pessary fittings.

Changes in Pelvic Floor Symptoms After Procedural Interventions for Uterine Leiomyomas: A Systematic Review.

OBJECTIVE: To conduct a systematic review to evaluate the effect of procedural interventions for leiomyomas on pelvic floor symptoms. DATA SOURCES: PubMed, EMBASE, and ClinicalTrials.gov were searched from inception to January 12, 2023, searching for leiomyoma procedures and pelvic floor disorders and symptoms, restricted to primary study designs in humans. METHODS OF STUDY SELECTION: Double independent screening for studies of any study design in all languages that reported pelvic floor symptoms before and after surgical (hysterectomy, myomectomy, radiofrequency volumetric thermal ablation) or radiologic (uterine artery embolization, magnetic resonance-guided focused ultrasonography, high-intensity focused ultrasonography) procedures for management of uterine leiomyomas. Data were extracted, with risk-of-bias assessment and review by a second researcher. Random effects model meta-analyses were conducted, as feasible. TABULATION, INTEGRATION, AND RESULTS: Six randomized controlled trials, one nonrandomized comparative study, and 25 single-group studies met criteria. The overall quality of the studies was moderate. Only six studies, reporting various outcomes, directly compared two procedures for leiomyomas. Across studies, leiomyoma procedures were associated with decreased symptom distress per the UDI-6 (Urinary Distress Inventory, Short Form) (summary mean change -18.7, 95% CI -25.9 to -11.5; six studies) and improved quality of life per the IIQ-7 (Incontinence Impact Questionnaire, Short Form) (summary mean change -10.7, 95% CI -15.8 to -5.6; six studies). There was a wide range of resolution of urinary symptoms after procedural interventions (7.6-100%), and this varied over time. Urinary symptoms improved in 19.0-87.5% of patients, and the definitions for improvement varied between studies. Bowel symptoms were inconsistently reported in the literature. CONCLUSION: Urinary symptoms improved after procedural interventions for uterine leiomyomas, although there is high heterogeneity among studies and few data on long-term outcomes or comparing different procedures. SYSTEMATIC REVIEW REGISTRATION: PROSPERO, CRD42021272678.

Anterior and posterior compartment 3D endovaginal ultrasound anatomy based on direct histologic comparison.

INTRODUCTION AND HYPOTHESIS: We used direct histologic comparison to validate the use of 3D endovaginal ultrasound (EVUS) as a novel and emerging technology for evaluating the structures found in the anterior and posterior pelvic floor compartments. METHODS: A young nulliparous female pelvis specimen was dissected and histologic slides were prepared by making 8-Micron-thick sagittal cuts. The slides were stained with Mallory trichrome and arranged to form large sections encompassing each anterior and posterior sagittal plane. Healthy nulliparous women underwent 3D EVUS to obtain 3D cubes of the anterior and posterior compartments. Two investigators independently evaluated the anterior and posterior midsagittal structures. The investigators mutually viewed the images and calculated urethral and anal sphincter measurements. RESULTS: Thirty-one nulliparous women underwent 3D EVUS; 77% of the participants were Caucasian, with mean age 31.8 [standard deviation (SD) 5.8] and mean body mass index (BMI) of 28.5 (SD 7.9). The following mean (SD) measurements were obtained: urethral length 36 mm (± 5); striated urogenital sphincter area 0.6 cm(2) (± 0.16); longitudinal and circular smooth muscle area 1.1 cm(2) (± 0.4); urethral complex width 14 mm (± 2); urethral complex area 1.3 cm(2) (± 0.4); internal anal sphincter length 26 mm (± 4); internal anal sphincter thickness 3.2 mm (± 0.8); and rectovaginal septum length 31 mm (± 5). The agreement for visualization of structures was as follows: vesical trigone 96% (κ = 0.65), trigonal ring 94% (κ = 0.8), trigonal plate 84% (κ = 0.6); longitudinal and circular smooth muscle 100%; compressor urethra 97% (κ = 0.85); striated urogenital sphincter 97% (κ = 0.85); rectovaginal septum 100%; internal anal sphincter 100%; external anal sphincter subdivisions 100%. CONCLUSIONS: Three-dimensional EVUS can be used to visualize structures of the anterior and posterior compartments in nullipara.

Randomized trial comparing office flexible to rigid cystoscopy in women.

INTRODUCTION AND HYPOTHESIS: The objective of the study was to compare office rigid cystoscopy (RC) versus flexible cystoscopy (FC) in women. METHODS: This was a prospective randomized trial comparing FC to RC. Aims were to assess 1-week post-procedural complications, compare procedure pain scores, and to assess physician perception of patient discomfort. Pain scores were assessed by visual analogue scale (VAS) and 5-point verbal descriptor scale (VDS). Chi-square was used for categorical comparison and t tests or Wilcoxon test for continuous variables. RESULTS: One hundred women were enrolled. The mean age of participants was 59.7 years (± SD 14.6), and 91 % were Caucasian. This was the first cystoscopy for 86 % of participants. On the 1-week post-procedure questionnaire (85 % response rate), participants in the FC group reported urinary frequency more often than in the RC group (p = 0.041). The FC group reported urgency with urination lasting 1-2 days (p = 0.030) and burning with urination lasting >3 days (p = 0.026), more than the RC group. These symptoms did not persist at 7 days. The duration of the procedure was slightly faster for the FC group (4.6 ± 1.8 min vs 5.7 ± 3.4 min, p = 0.046). Median VAS scores were 0.9 (0.1-2.72) for the FC group and 0.5 (0-2.4) for the RC group (p = 0.505). There were no significant differences between patient or physician perception of pain in either group. CONCLUSIONS: Urinary frequency and duration of urinary burning post procedure occurred more frequently in the FC group, although these symptoms were transient. Both office FC and RC are generally well tolerated in women with overall low morbidity.

Medical student knowledge of global health problems: obstetric fistulas in developing countries.

OBJECTIVE: To evaluate medical students in the United States at several medical schools regarding their knowledge of the global health burden of obstetric fistulas. STUDY DESIGN: A cross-sectional survey was conducted in 8 schools across the United States over a period of 6 months. The survey was composed of 18 questions on epidemiology, pathology, and treatment of fistulas. It was a web-based module accessed through an emailed link. It was sent to 5,103 medical students' email addresses at the 8 institutions once a week for 4 weeks. SPSS paired student t tests was used for statistical analysis. RESULTS: Of the 1,089 students from 8 medical schools that initially began the survey, 965 completed this voluntary and anonymous survey, with a 21% response rate and 19% completion rate. Overall the students averaged 11/18 (60.7%) correct on this survey. The knowledge of obstetric fistula improved, but not significantly, with increasing level of medical school education, with first-year medical students achieving 10/18 (55%) correct and senior medical students achieving 12/18 (67%) correct (p = 0.1). CONCLUSION: U.S. medical students' knowledge of obstetric fistulas in developing countries does not increase significantly over 4 years of medical school education. While this condition presents largely in the developing world, given rapid globalization as well as increased international health experiences for U.S.-trained health professionals,further effort should be placed in improving medical student knowledge of this devastating condition.

Referral pattern for vaginal mesh and graft complications to the University of Oklahoma Pelvic and Bladder Health Clinic.

OBJECTIVE: To evaluate the referral pattern to a tertiary care center for vaginal mesh complications following surgeries for pelvic organ support defect. METHODS: This was a retrospective review of women presenting to our clinic for complications of vaginal mesh. RESULTS: One hundred thirty three patients were included in the study. The median age was 58.4 years, median parity was two, and 95.4% were Caucasian. The pattern of referral was as follows: 10% continued care at the tertiary center where mesh or graft was initially inserted, 18% were referred by the surgeon who initially implanted the mesh or graft, 71% were referred from an outside secondary health care provider, and 1% was self referred. CONCLUSION: The majority of patients presenting to our clinic with mesh vaginal mesh complications were referred by someone other than the implanting surgeon.

Developing an Advanced Alternative Payment Model for Stress Urinary Incontinence.

ABSTRACT: Historically, our health care system has been based on a fee-for-service model, which has resulted in high-cost and fragmented care. The Center for Medicare & Medicaid Services is moving toward a paradigm in which health care providers are incentivized to provide cost-effective, coordinated, value-based care in an effort to control costs and ensure high-quality care for all patients. In 2015, the Medicare Access and Children's Health Insurance Program Reauthorization Act repealed the Sustainable Growth Rate and the fee-for-service model, replacing them with a 2-track system: Merit-based Incentive Payment System and the advanced Alternative Payment Model (aAPM) system. In 2016, the American Urogynecologic Society Payment Reform Committee was created and tasked with developing aAPMs for pelvic floor disorders. The purpose of this article is to describe the stress urinary incontinence aAPM framework, the data selected and associated data plan, and some of the challenges considered and encountered during the aAPM development.

Three-dimensional ultrasound imaging for diagnosis of urethrovaginal fistula.

We present a novel technique for visualization of a urethrovaginal fistula. A 52-year-old patient presented with persistent urinary incontinence, after having three mid-urethral sling procedures performed within the past year. The diagnosis of a urethrovaginal fistula was made by endovaginal 3-D endovaginal ultrasound and confirmed intraoperatively. We have described a novel technique that may benefit patients with urethrovaginal fistulas that are difficult to visualize.

Comparing Ketorolac With Ibuprofen for Postoperative Pain: A Randomized Clinical Trial.

OBJECTIVES: The objective of this study was to identify differences in pain perception and satisfaction with pain control in women receiving nonsteroidal anti-inflammatory drugs postoperatively. METHODS: This was a prospective, randomized controlled trial including urogynecology surgical patients. After surgery, all patients were randomized to receive either intravenous (IV) ketorolac or ibuprofen. The patients completed 3 visual analog scales (VAS) assessing pain at rest, pain with ambulation, and satisfaction with pain control. Postoperative opioid use was also measured. RESULTS: A total of 224 patients (112 in each arm) were included. Pain scores (SD) at rest in all patients who received ketorolac versus those who received ibuprofen was 2.30 (2.1) versus 2.68 (2.34) (P = 0.20). Pain scores (SD) with ambulation was 3.94 (2.57) versus 4.16 (2.73) (P = 0.57) in patients who received ketorolac and ibuprofen, respectively. Patients who received ketorolac rated their satisfaction with their pain regimen similarly to those who received ibuprofen (P = 0.50). The average amount (SD) of hydromorphone used in the ketorolac and ibuprofen arm was 3.68 (4.58) mg and 4.04 (4.97) mg, respectively (P = 0.58). A subgroup analysis based on type of surgery showed decreased pain at rest (VAS, 2.77 vs 4.88; P = 0.04) and increased satisfaction (VAS, 1.69 vs 4.67; P = 0.003) in patients who had laparotomy and received ketorolac. CONCLUSIONS: There was no difference in pain and satisfaction with IV ketorolac compared with IV ibuprofen in patients who underwent all modalities of urogynecologic surgery. A subgroup of patients who underwent laparotomy had less pain with ketorolac.

Establishing Validity for a Vaginal Hysterectomy Simulation Model for Surgical Skills Assessment.

OBJECTIVE: To use the Messick validity framework for a simulation-based assessment of vaginal hysterectomy skills. METHODS: Video recordings of physicians at different levels of training and experience performing vaginal hysterectomy on a high-fidelity vaginal surgery model were objectively assessed using a modified 10-item Vaginal Surgical Skills Index, a one-item global scale of overall performance, and a pass-fail criterion. Participants included obstetrics and gynecology trainees and faculty from five institutions. Video recordings were independently assessed by expert surgeons blinded to the identities of the study participants. RESULTS: Fifty surgeons (11 faculty, 39 trainees) were assessed. Experience level correlated strongly with both the modified Vaginal Surgical Skills Index and global scale score, with more experienced participants receiving higher scores (Pearson r=0.81, P<.001; Pearson r=0.74, P<.001). Likewise, surgical experience was also moderately correlated with the modified Vaginal Surgical Skills Index and global scale score (Pearson r=0.55, P<.001; Pearson r=0.58, P<.001). The internal consistency of the modified Vaginal Surgical Skills Index was excellent (Cronbach's alpha=0.97). Interrater reliability of the modified Vaginal Surgical Skills Index and global scale score, as measured by the intraclass correlation coefficient, was moderate to good (0.49-0.95; 0.50-0.87). Using the receiver operating characteristic curve and the pass-fail criterion, a modified Vaginal Surgical Skills Index cutoff score of 27 was found to most accurately (area under the curve 0.951, 95% CI 0.917-0.983) differentiate competent from noncompetent surgeons. CONCLUSION: We demonstrated validity evidence for using a high-fidelity vaginal surgery model with the modified Vaginal Surgical Skills Index or global scale score to assess vaginal hysterectomy skills.

Appearance of the levator ani muscle subdivisions in endovaginal three-dimensional ultrasonography.

OBJECTIVE: To formulate an evaluation system and authenticate the levator ani subdivisions visible on endovaginal three-dimensional ultrasonography. METHODS: A three-dimensional endovaginal ultrasound examination was performed on five fresh-frozen female pelves. The location of the pubovaginalis, puboperinealis, puboanalis, puborectalis, and iliococcygeus muscles was identified. Three-dimensional endovaginal ultrasound scans of 22 nulliparous women with normal pelvic floors were obtained, and a three-level evaluation system was constructed. Level 1 contained the muscles as they insert into the perineal body. Level 2 evaluated the insertions into the retropubic area and typically contained the pubovaginalis, puboperinealis, puboanalis, and puborectalis. Level 3 contained muscles that were cephalad to the pubic bone. Two blinded reviewers assessed levator ani subdivision visualization at each level and individual muscle visualization by the origin-insertion points. RESULTS: There was 98%, 96%, and 92% agreement for levels 1, 2, and 3 muscles, with 95% confidence intervals (CIs) of 0.92-1, 0.95-0.99, and 0.88-0.95, respectively. Kappa values (95% CI) for agreement were calculated for individual muscles as follows: superficial transverse perinei and puborectalis were seen by both raters 100%, puboperinealis, pubovaginalis, and puboanalis 0.645 (0.1-1), and iliococcygeus 0.9 (0.6-1). CONCLUSION: The location of the pubovaginalis, puboperinealis, puboanalis, puborectalis, and iliococcygeus as seen by three-dimensional endovaginal ultrasonography was confirmed through anatomic dissection of fresh-frozen pelves. Subdivisions of the levator ani muscle were visualized reliably with three-dimensional ultrasonography using a systematic approach. LEVEL OF EVIDENCE: III.

Surgical reconstitution of a unilaterally avulsed symptomatic puborectalis muscle using autologous fascia lata.

BACKGROUND: The puborectalis muscle is an important muscle for the maintenance of fecal continence. We present a novel surgical technique for repair of symptomatic avulsed puborectalis muscle. CASE: This woman presented with dyspareunia and fecal incontinence since the vaginal birth of her child 2 years before. The diagnosis of an avulsed right puborectalis was made by physical examination and confirmed by magnetic resonance imaging and three-dimensional ultrasonography. Fascia lata was harvested from the patient's thigh and used to reconstitute the missing portion of the puborectalis muscle. At 12 months postoperatively, the patient was continent of stool and relieved of dyspareunia. CONCLUSION: The patient's dyspareunia and fecal incontinence were alleviated by restoring normal anatomy.

Attachment of a sling rescue suture to Midurethral tape for management of potential postoperative voiding dysfunction.

AIMS: To investigate the utility of a polypropylene sling rescue suture (SRS) attached to mid-portion of the mid-urethral sling tape procedure for in office sling loosening/release using a defined algorithm. METHODS: A surgical database search was performed for slings performed by the authors. During the course of the procedure a polypropylene suture was passed through the mid-portion of the sling tape and allowed to exit through the vaginal mucosa closure such that the tail of the suture loop rested in the vagina. Patients were managed by a predetermined algorithm to make decisions about (1) in office polypropylene suture removal, (2) manipulation of polypropylene suture in attempt to loosen the sling, and (3) localization and incision of the sling tape in the office using polypropylene suture. RESULTS: One hundred eighty-four cases were identified, 70/184 of which were outpatient slings, and 114/184 of which had reconstructive surgery and a sling procedure. In the outpatient sling group 2/70 (3%) had resolution of voiding dysfunction with sling manipulation using polypropylene suture, 2/70 (3%) required sling excision in office. In the group with concomitant pelvic reconstruction, 4/114 had elevated postvoid residuals and ultimately required sling excision. 6/184 (3%) in the entire group required sling excision in the office. 178/184 (97%) had normal voiding. CONCLUSIONS: The polypropylene suture facilitated easy release of obstructive slings. It was successful in normalizing the voiding function in patients with disrupted voiding pattern, but not in those with high post-void residuals who had failed a trial of intermittent catherization.