Human amniotic fluid stem cells can alleviate detrusor dysfunction caused by bladder outlet obstruction in rats.

The present study examined whether bladder detrusor dysfunction due to partial bladder outlet obstruction (pBOO) could be improved after the treatment of human amniotic fluid stem cells (hAFSCs). 72 female rats were grouped into sham operation, pBOO, and pBOO with hAFSCs treatment (pBOO + hAFSCs) for in vitro and in vivo studies. Bladder weight, bladder wall thickness, the ratio of collagen to smooth muscle and the levels of positive CD11b/c and HIS48 cells was significantly increased after pBOO but improved after hAFSCs treatment. Cystometries showed impaired bladder function after pBOO. Protein and mRNA levels of hypoxia inducible factor-1α, CCL2, interleukin-1ß, transforming growth factor-ß1 (TGF-ß1), connective tissue growth factor (CTGF), α-smooth muscle actin, collagen I and collagen III were increased at 2 and/or 6 weeks, but proteins and mRNA expressions of protein gene product 9.5 were decreased at 2 and 6 weeks after pBOO. These abnormalities were improved after hAFSCs treatment. The expressions of TGF-ß1 and CTGF in cultured detrusor cells of pBOO rats were increased but were improved after hAFSCs treatment. The present results showed hAFSCs treatment could improve bladder detrusor dysfunction in pBOO rats, which may be related to the reduction of inflammatory and pro-fibrotic markers in detrusor muscle cells.

Minimal requirement in urogynecological knowledge for obstetrics and gynecology specialists.

OBJECTIVE: To investigate the current knowledge and practice patterns of obstetrics and gynecology (obs/gyn) physicians regarding the diagnosis, evaluation, and management of pelvic floor disorders (PFD) including stress urinary incontinence (SUI), pelvic organ prolapse (POP) and lower urinary tract symptoms (LUTS). The knowledge related to urodynamic study (UDS) is also evaluated. MATERIALS AND METHODS: A 25-item questionnaire was developed and sent for the physician members who participated in the annual congress of Taiwan Association of Obstetrics and Gynecology (TAOG). Response to the questionnaire was voluntary and anonymous. The questionnaires were collected prior to the ending of the congress. RESULTS: 2000 copies of the questionnaire were sent and 1443 TAOG members responded. 86 poor respondents and 45 copies from urogynecologists were excluded. 1312 copies of the completed questionnaires were analyzed. 77.7% of the respondents were male physicians and 50.6% were over 55 years old. Up to 53.7% of the physicians had completed their residency training for over twenty years. Generally, around half of the respondents didn't reach well a level of well understanding regarding the various PFD. Most of the physicians would like to have further knowledge in urogynecological field for their daily practice. Regular delivery of updated information about various urogynecological diseases is mandatory. CONCLUSION: With the aging population worldwide, the need for management of PFD is increasing. The obs/gyn physician plays an important role in the primary evaluation and management of PFD. This study offered important information related to the current investigation, management, practice patterns and future expectation from obs/gyn physicians as references for the future continuing medical education programs.

Limited efficacy with additional adverse effect of anti-adhesion barrier at primary cesarean section.

BACKGROUND/PURPOSE: In our experience, adhesion after the primary CS is generally minimal or nonexistent. However, adhesion barriers users have experienced more febrile episodes that may require therapeutic antibiotics during the postcesarean period. We evaluated clinical efficacy of HA-CMC and ORC to prevent adhesion at secondary CS and the post-operative outcome at primary and secondary CS. METHODS: This retrospective study includes 199 Asian women undergoing primary and secondary cesarean section between January1, 2011, and September 31, 2019. We used linear and logistic regression to analyze risk factors of postcesarean fever. An interaction term analysis was performed to examine the effect of surgical site infection risk factors and use of adhesion barrier on postcesarean fever rates. RESULTS: We found that use of adhesion barrier at the primary cesarean section is associated with a significantly higher incidence of postcesarean fever (p = 0.045), which is an independent risk factor of postcesarean fever (adjusted hazard ratio (Adj-HR)= 3.53, 95% CI = 1.03-10.24, p = 0.045). The strongest risk factor for postcesarean fever is the use of anti-adhesion film during emergency cesarean section (p = 0.041). In the subgroup of labor before operation and emergency cesarean section, adhesion barrier user had significant higher risk of postcesarean fever than nonuser (p = 0.018, Adj-HR = 12.12, 95% CI = 1.53-95.78; emergency cesarean section: p = 0.016, Adj-HR = 12.71, 95% CI = 1.62-99.62). CONCLUSION: Use of anti-adhesion films during emergency cases and with a significantly higher risk of postcesarean fever which potentially means increased risk of surgical site infection. Therefore, we do not suggest routine application of anti-adhesion films during cesarean deliveries especially in emergency cesarean section or in a woman having labor before operation.

Evaluation of efficacy and safety of single-incision sling versus transobturator sling in women with stress incontinence and intrinsic sphincter deficiency.

INTRODUCTION AND HYPOTHESIS: Urethral intrinsic sphincter deficiency (ISD) is associated with severe urine leakage and a higher risk of sling failure. The aim of this study is to evaluate the efficacy and safety of single-incision slings (SISs) versus transobturator slings (TOSs) in such patients. METHODS: Patients who had stress incontinence and ISD who underwent SIS or TOS procedures from 2010 to 2017 were retrospectively reviewed. The objective and subjective cure rates and surgical adverse events were compared between different slings. Objective cure was defined as no stress urine leakage with a comfortably full bladder. Subjective cure was determined by the patient's satisfaction. Incontinence-related symptom distress and quality of life were evaluated using the short forms of the Urogenital Distress Inventory (UDI-6) and Incontinence Impact Questionnaire (IIQ-7). RESULTS: Among 111 patients, 37 underwent SIS and 72 underwent TOS with a median follow-up of 21 (range: 12-72) months and 24 (range: 14-84) months (p = 0.265). For both groups, the UDI-6, IIQ-7, and 1-h pad test all significantly improved after surgery (all p < 0.001). The objective and subjective cure rates were comparable after SIS and TOS procedures (objective: 76% vs. 76%, p = 0.837; subjective: 78% vs. 83%, p = 0.212). There were no significant differences in adverse events, except SISs had a shorter surgery time (16.4 ± 9.3 vs. 27.3 ± 12.4 min, p = 0.020) and lower postoperative visual analog scale pain score (1.3 ± 1.1 vs. 3.9 ± 1.4, p < 0.001). CONCLUSION: SISs and TOSs had similar surgical results in women with stress incontinence and ISD after at least 1 year of follow-up. However, SISs had a shorter operation time and lower postoperative pain than TOSs.

Effect of aging on lower urinary tract symptoms and urodynamic parameters in women.

OBJECTIVE: Lower urinary tract symptoms (LUTS) are common in women. However, due to multifactorial etiologies, it is difficult to determine the prevalence, and functional changes with age. The aim of this study is to assess the effect of age on female LUTS, urethral and bladder function after their midlife. MATERIALS AND METHODS: This was an observational cohort study conducted at a tertiary referral medical center. Women who visited for bothersome LUTS, valid quality of life questionnaires, and urodynamic tests were recruited into the this study. Patients The patients were divided into four groups (<50, 50-59, 60-69, and >69 years). All LUTS, and urodynamic parameters were reviewed, and compared between groups. RESULTS: A total of 364 women were enrolled and analyzed. The urodynamic tests showed the that maximal cystometric bladder capacity, the average and maximal urine flow rate, and pressure of detrusor contractility at maximal urine flow rate were all significantly decreased with age. Besides, the voiding time, and post-voiding residual urine volume significantly increased with age. For urethral competence, the maximal urethral closure pressure deteriorated with age. All storage symptoms did not change with age, except for nocturnal enuresis. However, the effect of age on some voiding symptoms significantly increased with age, including straining to void, hesitancy, and intermittency. CONCLUSIONS: Lower urinary tract symptoms, bladder and urethral functions change with age, particularly voiding function. Physicians should be aware of the aging process when counseling and before implementing management strategies, particularly for older people.

Factors associated with treatment outcomes after intravesical hyaluronic acid therapy in women with refractory interstitial cystitis: A prospective, multicenter study.

BACKGROUND: Bladder instillation of hyaluronic acid (HA) is an acceptable treatment for bladder pain syndrome/interstitial cystitis (BPS/IC). The treatment is limited by a high proportion of non-responders (~30%-40%). Here, we aimed to evaluate predisposing factors associated with treatment outcomes. METHODS: This is a prospective multicenter study. We enrolled a total of 137 (out of 140) women with refractory IC. They all underwent a standard protocol of 6-month intravesical HA therapy (initial 4 weeks, once weekly, followed by once monthly). To assess the outcomes, we used the pain Visual Analog Scale (Pain-VAS), Interstitial Cystitis Symptom and Problem Index (ICSI & ICPI), and a scaled Global Response Assessment (GRA). RESULTS: The age of patients was 47.6 ± 27.5 (range 24-77) years. We found statistically significant improvement (p < 0.001) in the Pain-VAS and the ICSI & ICPI scores both after the initial 4-weekly instillations and at the end of 6-month treatment. Those who reported moderate/marked improvement on GRA at the 2 follow-up visits were considered responders: 39.4% (n = 54) at the first follow-up, and 59.9% (n = 82) at the second follow-up. No remarkable side effect was noted. After statistical analyses, treatment outcomes on GRA were positively associated with baseline functional bladder capacity and with Pain-VAS scores. The initial treatment responses optimally (p < 0.001) predicted final treatment outcomes (McNemar). CONCLUSION: Intravesical HA therapy is safe and effective for most (~60%) of our patients with refractory IC. Functional bladder capacity and Pain-VAS scores before treatment, and the early treatment responses are helpful predictors of treatment outcomes.

The Prevalence of Vaginal Flatus in Women With Pelvic Floor Disorders and Its Impact on Sexual Function.

BACKGROUND: Vaginal flatus is involuntarily passing gas from the vagina. Women seldom voluntarily report it, and related data are limited. AIM: To investigate the prevalence of vaginal flatus in women with pelvic floor disorders and its impact on sexual function. METHODS: This was an observational study involving women who visited a urogynecologic clinic in a tertiary medical center. Patients were asked about their experience of vaginal flatus. Other evaluations included urodynamics, genital prolapse stage, and quality-of-life questionnaires, including the short form of the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire, Urogenital Distress Inventory, and Incontinence Impact Questionnaire. OUTCOMES: Clinical characteristics, vaginal anatomic landmarks, stage of prolapse, urodynamic parameters, and quality-of-life scores were compared between women with and without vaginal flatus. RESULTS: Among 341 women, 118 (35%) reported vaginal flatus, which was more common in those who were younger (a mean age of 49.3 ± 9.2 years; range 25-74 years vs 49.3 ± 9.2 years; range 25-74 years, P < .001) and sexually active (98% vs 55%, P < .001). Women with vaginal flatus had significantly worse sexual function (Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire, 16.3 ± 15.9 vs 30.9 ± 8.0, P < .001) and incontinence-related quality of life (Urogenital Distress Inventory, 23.4 ± 10.5 vs 17.8 ± 8.9, P = .039; Incontinence Impact Questionnaire, 25.5 ± 14.5 vs 17.2 ± 12.5, P = .012). For frequency and bother, 48 of 116 (46%) women reported often or always having symptoms during sexual activity, 5 of 34 (15%) when performing daily activities, and 4 of 31 (12%) when exercising, and 70 of 116 (60%) felt least moderate bothersome during sexual activity compared with 2 of 34 (5%) when performing daily activities and 6 of 31 (18%) when exercising. CLINICAL IMPLICATIONS: Vaginal flatus is prevalent in women with pelvic floor disorders, particularly in those who are younger and sexually active. STRENGTHS & LIMITATIONS: The strength of this study is to evaluate the sexual function with validated questionnaires. The lack of data after pelvic floor management is the major limitation. CONCLUSIONS: Among women with pelvic floor disorders, those with vaginal flatus reported poorer sexual function. Routine counseling should be considered for these patients. Lau H-H, Su T-H, Chen Y-Y, et al. The Prevalence of Vaginal Flatus in Women With Pelvic Floor Disorders and Its Impact on Sexual Function. J Sex Med 2021;18:487-492.

Cutoff score of the traditional Chinese version of the short form of the pelvic organ prolapse/urinary incontinence sexual questionnaire (PISQ-12).

OBJECTIVE: The short form of the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-12) is a condition-specific instrument used to evaluate sexual function in women with pelvic floor disorders. The traditional Chinese version of the PISQ-12 (CVPISQ-12) has been validated, however the cutoff score has yet to be determined. The aim of this study is to establish the cutoff score for the CVPISQ-12 and analyze the risk factors for female sexual dysfunction. MATERIAL AND METHODS: A sub-analysis of data involving sexually active women who sought consultation for pelvic floor disorders at a medical center in 2016. Based on the known cutoff value of Female Sexual Function Index, the cutoff score of the CVPISQ-12 was analyzed using receiver operating characteristic (ROC) curve analysis. Other assessments included 1-h pad test and incontinence-related questionnaires using the short forms of the Urogenital Distress Inventory (UDI-6) and Incontinence Impact Questionnaire (IIQ-7). RESULTS: ROC curve analysis showed a cutoff score of 32.5, with a sensitivity of 87% and specificity of 88%. The area under the ROC curve was 0.937 (p <0.001; 95% confidence interval: 0.895-0.979). The 1-h pad test (B = -0.266; p = 0.031), IIQ-7 (B = -0.378; p = 0.047) and age (B = -0.415; p = 0.001) were risk factors for sexual dysfunction in women with a score <32.5. However, age was the only significant risk factor for women with a higher score (B = -0.384; p = 0.035). CONCLUSIONS: A CVPISQ-12 score ≥32.5 suggested normal sexual function. For this patient group, age may be a more important factor associated with sexual function than pelvic floor disorders.

Amniotic Membrane Graft in the Management of Complex Vaginal Mesh Erosion.

Vaginal mesh erosion is a devastating complication after pelvic floor mesh surgery and it can be treated conservatively or with surgical revision. However, the management options following a failed primary revision or complex vaginal erosions are very limited. The aim of this study is to describe a novel treatment using an amniotic membrane as an inlay graft for such patients. Eight patients who failed conservative or primary surgical revision were enrolled. The complex erosions included vaginal agglutination, multiple vaginal erosions, recurrent erosions, and mesh cutting through the urethra. We used an amniotic membrane as a graft to cover the vaginal defect after partial excision of the mesh erosion and we describe the technique in this study. There were no intraoperative complications and none of the patients reported any further symptoms at a mean of 27 months follow-up. Only one patient had recurrent erosion, however, the erosion size was narrower and was subsequently successfully repaired. No further vaginal mesh erosions were noted in the other patients who all had good functional recovery. The use of an amniotic graft can be an economic and alternative method in the management of complex vaginal mesh erosions.

The Outcome of a Single-Incision Sling versus Trans-Obturator Sling in Overweight and Obese Women with Stress Urinary Incontinence at 3-Year Follow-Up.

Background: Being overweight or obese is a risk factor for incontinence and has negative impacts on the surgical outcomes. Compared with trans-obturator sling (TOS), single incision sling (SIS) is a new generation of anti-incontinence surgery. However, the data on SIS in overweight and obese women remains limited. Methods: This retrospective study analyzed the objective and subjective cure rate of overweight and obese women who underwent sling surgeries. Other evaluations included valid questionnaires to assess quality of life and 1-hour pad test to quantify urine leakage. Surgical characteristics and adverse events were also analyzed. Results: A total of 217 patients were analyzed with a median follow-up period of 37.3 months (range, 9-84 months). For overweight and obese patients, the objective and subjective cure rate were comparable (all p > 0.05). However, the SIS group had worse post-operative incontinence-related symptom distress (p < 0.001) and 1-hour pad test (p = 0.047). On the other hand, SIS had a shorter surgery time (p = 0.017) and lower pain score (p < 0.001). Conclusions: Compared with TOS, SIS had non-significant cure rates in the overweight and obese women. SIS had worse urine leakage and incontinence symptoms, but less surgical and wound pain in obese women. Thorough pre-operative counseling is necessary.

Hyaluronic acid improves pain symptoms more than bladder storage symptoms in women with interstitial cystitis.

OBJECTIVE: Intravesical hyaluronic acid (HA) therapy is one of acceptable methods to treat bladder pain and storage symptoms (i.e., urgency, frequency and nocturia) of interstitial cystitis/bladder pain syndrome (IC/BPS). We aim to assess the impacts of intravesical HA on bladder pain and storage symptoms, respectively, and to investigate their associated factors in patients with IC/BPS. MATERIALS AND METHODS: In this prospective, multicenter study, 103 women with refractory IC/BPS undergoing a standard protocol of intravesical HA therapy were enrolled. A pain Visual Analog Scale (VAS) and the Interstitial Cystitis Symptom and Problem Index (ICSI & ICPI) were used to assess symptoms and bother associated with IC/BPS. The Scaled Global Response Assessment (GRA) was used to evaluate patients' perception of overall changes in bladder pain and storage symptoms, respectively, after treatment. RESULTS: Mean age of participants was 43.6 ± 11.8 years. The average duration of symptoms was 5.1 ± 5.0 years. Significant improvements in pain VAS, ICSI and ICPI scores were observed after treatment. However, patients reported significantly different rates of moderate/marked improvement in bladder pain and storage symptoms (73.8% vs. 47.6%; P < 0.001) on the GRA, respectively. "Lower pain VAS score" and "reduced functional bladder capacity" were found to be the factors that adversely affected the treatment responses of bladder pain and storage symptoms, respectively, after repeated statistical analyses. CONCLUSION: Bladder instillation of HA seemed more efficient in improving bladder pain than storage symptoms associated with IC/BPS. The persistence of bladder storage symptoms after treatment might result from a reduced functional bladder capacity.

Changes in Female Sexual Function After Vaginal Mesh Repair Versus Native Tissue Repair for Pelvic Organ Prolapse: A Meta-Analysis of Randomized Controlled Trials.

AIM: To evaluate changes in female sexual function after transvaginal mesh (TVM) repair versus native tissue repair for pelvic organ prolapse. METHODS: Eligible studies, published through November 2017, were retrieved through searches of ClinicalTrials.gov, MEDLINE, Embase, and Cochrane Review databases and associated bibliographies. We included randomized control trials of transvaginal prolapse surgery with either mesh repair or native tissue repair regarding the outcomes of sexual function, de novo and postoperative dyspareunia with a minimum of 3 months of follow-up. RESULTS: Seventeen trials including 2,976 patients (1,488 with TVM repair and 1,488 with native tissue repair) were identified. There was no significant difference in postoperative dyspareunia after TVM repair versus native tissue repair (risk ratio [RR] = 1.07; 95% confidence interval [CI] = 0.76-1.50). Likewise, there was no significant difference in de novo dyspareunia after TVM repair versus native tissue repair (RR = 0.91; 95% CI = 0.52-1.61). There was also no significant difference in the short form Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire score after TVM mesh repair versus native tissue repair (mean difference = 0.26; 95% CI = -1.34 to 1.85). CONCLUSION: Sexual function and de novo and postoperative dyspareunia were similar between the patients who underwent TVM repair and those who underwent native tissue repair. Liao S-C, Huang W-C, Su T-H, et al. Changes in Female Sexual Function After Vaginal Mesh Repair Versus Native Tissue Repair for Pelvic Organ Prolapse: A Meta-Analysis of Randomized Controlled Trials. J Sex Med 2019;16:633-639.

First-trimester abortion complicated with placenta accreta: A systematic review.

Placenta accreta is a potentially life-threatening condition that may complicate a first-trimester abortion in rare occasions, and it can be difficult to recognize. We reviewed the literature in PubMed-indexed English journals through August 2018 for first-trimester postabortal placenta accreta, after which 19 articles and 23 case reports were included. The risk factors for the development of abnormal placentation are previous cesarean section (87%), previous history of uterine curettage (43.5%), and previous history of surgical evacuation of a retained placenta (4.3%). Ten patients (43.5%) had an advanced age (≧35 years). Most patients clinically presented with vaginal bleeding, ranging from intermittent or irregular bleeding, persistent bleeding, and profuse or massive bleeding. The onset of symptoms might be during the intra- or immediate postoperative period. Some patients had delayed symptoms 1 week to 2 years postoperatively. Conservative management may be attempted as the primary rescue, including uterine artery embolization (UAE), transcatheter arterial chemoembolization (TACE) with dactinomycin, and laparoscopic hysterotomy with placental tissue removal. However, most reports in the literature suggested either abdominal or laparoscopic hysterectomy as the definitive treatment for first-trimester postabortal placenta accreta. High index of clinical suspicion with anticipation of placenta accreta in early pregnancy is highly essential for timely diagnosis, providing the physician better opportunities to promptly manage this emergent condition and improve outcomes.

Work hours of employed obstetricians in Taiwan.

OBJECTIVE: Obstetricians have longer work hours and work hour restriction of employed physicians will be implemented thereafter. This study was to survey the impact of work hour restriction and determine the weekly work hours of obstetricians. MATERIALS AND METHODS: Since December 1, 2017, to January 31, 2018, a questionnaire about reasonable workload investigation, impact of work hour restriction and weekly work diary was mailed to 196 employed obstetricians who delivered more than 20 newborns per months. The work types and coefficient of correlation with work hours was evaluated using the Pearson correlation coefficient (r). RESULTS: 72 returned the questionnaires, 21 (31.4%) believed that 40-49 h were reasonable, while 22 (32.8%), 13 (19.4%), 7 (10.4%), and 4 (6%) thought that 50-59, 60-69, 70-79, and >80 h were reasonable. 66 completed their weekly work diary. The average weekly work hours were 80.14 ± 6.85. If the time of awaiting delivery was calculated into total work hours, then the average work hours were 116.96 ± 12.41. The coefficient of correlation between on-duty and weekly work hours was 0.7. The average work hours of physicians with on-duty work were 92.08 ± 8.7, which were significantly higher than the work hours of those without on-duty works (63.95 ± 7.79). CONCLUSION: The weekly work hours of employed obstetricians is higher than their expected reasonable work hours. Implementation of work hour restriction will have a significant impact on medical care. It is important to determine a reasonable work hour restriction and modify the patient care model to reduce workload.

Did surgical failure and complications affect incontinence-related quality of life in women after transobturator sling procedure?

OBJECTIVE: To report the objective outcome, subjective measurement of incontinence-related quality of life (QoL) for female urodynamic stress incontinence (USI) after transobturator sling surgery (TVT-O) and to evaluate the effects of surgical failure and complications on QoL. MATERIALS AND METHODS: We analyzed the data from women who underwent TVT-O for USI and completed two validated QoL questionnaires, the Urogenital Distress Inventory (UDI-6) and Incontinence Impact Questionnaire (IIQ-7) preoperatively and at least 12 months postoperatively. We evaluated the subjective results of QoL questionnaires, objective results and compare the effect of QoL on those with surgical failure and complications after TVT-O surgery. RESULTS: A total of 78 women were followed for a median of 13.5 months (range 12-15 months) after surgery. Within this group, 75 (96%) were considered subjectively cured or improved after TVT-O. There were significant improvements in the IIQ-7 and total UDI-6 scores postoperatively, as well as in the UDI-6 subscales for urge, stress and voiding dysfunction symptoms. Even the 18 women with objective urodynamic failure had significant improvement in QoL scores. For those with surgical related complications, the QoL scores were also significantly improved. CONCLUSIONS: TVT-O for USI resulted in improvement of incontinence-related QoL including urgency, stress, and voiding dysfunction symptoms. Surgical failure and complications didn't impair postoperative QoL.

Regulation of Spontaneous Contractions in Intact Rat Bladder Strips and the Effects of Hydrogen Peroxide.

Enhanced spontaneous contractions are associated with overactive bladder. Elevated levels of reactive oxygen species might contribute to enhanced spontaneous contractions. We investigated the regulation of spontaneous contractions and the effects of hydrogen peroxide (H2O2) in intact rat bladder strips. The spontaneous contractions were measured using a tissue bath system. The vehicle or the specific activators/blockers were applied and followed by the application of 0.003 g% H2O2. The basal tension, amplitude, and frequency of spontaneous contractions were quantified. Nisoldipine and bisindolylmaleimide 1 had no effects on spontaneous contractions. SKF96365 and Y27632 decreased basal tension and amplitude. Ryanodine slightly increased frequency. Both iberiotoxin and NS-1619 increased amplitude. Apamin reduced frequency but increased amplitude. NS-309 inhibited both the amplitude and frequency. The basal tension and amplitude increased when H2O2 was applied. Pretreatment with NS-309 inhibited H2O2-elicited augmented amplitude and frequency, while pretreatment with Y-27632 inhibited the augmented basal tension. The combined application of NS-309 and Y27632 almost eliminated spontaneous contractions and its augmentation induced by H2O2. In conclusion, Ca2+ influx, Rho kinase activation, and SK channel inactivation play important roles in spontaneous contractions in intact bladder strips, whereas only latter two mechanisms may be involved in H2O2-elicited increased spontaneous contractions.

Urinary leakage during sexual intercourse among women with incontinence: Incidence and risk factors.

BACKGROUND: Coital incontinence is an under-reported disorder among women with urinary incontinence. Women seldom voluntarily report this condition, and as such, related data remains limited and is at times conflicting. AIMS AND OBJECTIVES: To investigate the incidence and quality of life in women with coital incontinence and to determine associated predictors. METHODS: This observational study involved 505 sexually active women attending the urogynecologic clinic for symptomatic urinary incontinence at a tertiary medical center. All of the patients were consulted about the experience of coital incontinence and completed evaluations including urodynamics, and valid questionnaires including the short form of the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire, the Urogenital Distress Inventory and the Incontinence Impact Questionnaire. RESULTS: Of these women, 281 (56%) had coital incontinence, while 224 (44%) did not. Among women with coital incontinence, 181 (64%) had urodynamic-proven stress incontinence, 29 (10%) had mixed incontinence, and 15 (5%) had detrusor overactivity. Only 25 (9%) sought consultation for this disorder before direct questioning. Fifty percent (84/281) of the women rarely or sometimes had incontinence during coitus, while 33% (92/281) often had incontinence, and 17% (48/281) always had incontinence. The frequency of coital incontinence was not different regarding the types of incontinence (p = 0.153). Women with mixed incontinence had the worst sexual quality of life and incontinence-related symptom distress. Based on univariate analysis, higher body mass index (OR 2.47, p = 0.027), and lower maximal urethral closure pressure (≤ 30 cmH2O) (OR 4.56, p = 0.007) were possible predictors for coital incontinence. Multivariate analysis showed lower MUCP was independently significant predictors (OR3.93, p = 0.042). CONCLUSIONS: The prevalence of coital intercourse in urinary incontinence women was high. Coital incontinence in these women was associated with abnormal urodynamic diagnosis and urethral dysfunction.

Risk factors and management of vaginal mesh erosion after pelvic organ prolapse surgery.

OBJECTIVE: Mesh erosion is a serious and not uncommon complication in women undergoing vaginal mesh repair. We hypothesized that mesh erosion is associated with the patient's comorbidities, surgical procedures, and mesh material. The aims of this study were to identify the risk factors and optimal management for mesh erosion. MATERIALS AND METHODS: All women who underwent vaginal mesh repair from 2004 to 2014 were retrospectively reviewed. Data on patients' characteristics, presenting symptoms, treatment and outcomes were collected from their medical records. RESULTS: A total of 741 women underwent vaginal mesh repairs, of whom 47 had mesh erosion. The median follow-up period was 13 months (range 3-84 months). Another nine patients with mesh erosion were referred form other hospitals. Multivariate analysis revealed that concomitant hysterectomy (odds ratio 27.02, 95% confidence interval 12.35-58.82; p < 0.01) and hypertension (odds ratio 5.95, 95% confidence interval 2.43-14.49; p < 0.01) were independent risk factors for mesh erosion. Of these 56 women, 20 (36%) were successfully treated by conservative management, while 36 (64%) required subsequent surgical revision. Compared with surgery, conservative treatment was successful if the size of the erosion was smaller than 0.5 cm (p < 0.01). Six patients (17%) had recurrent erosions after primary revision, but all successfully healed after the second surgery. CONCLUSION: Concomitant hysterectomy and hypertension were associated with mesh erosion. In the management of mesh erosion, conservative treatment can be tried as the first-line treatment for smaller erosions, while surgical repair for larger erosions. Recurrent erosions could happen and requires repairs several times.