Milena M. Weinstein

Fecal Incontinence in US Adults: Epidemiology and Risk Factors

BACKGROUND & AIMS The study aims were to estimate the prevalence of different types and frequencies of fecal incontinence (FI), describe demographic factors, and identify risk factors. METHODS The National Health and Nutrition Examination Survey (NHANES) assesses health status in the civilian noninstitutionalized US population. The validated Fecal Incontinence Severity Index was added to NHANES in 2005-2006. Participants were 2229 women and 2079 men aged 20 years or older. FI was defined as accidental leakage of solid, liquid, or mucus at least once in the preceding month. Sampling weights were used to obtain prevalence estimates for the national population. Multivariate logistic regression identified independent risk factors. RESULTS The estimated prevalence of FI in noninstitutionalized US adults is 8.3% (95% confidence interval, 7.1-9.5) and consists of liquid stool in 6.2%, solid stool in 1.6%, and mucus in 3.1%. It occurs at least weekly in 2.7%. Prevalence is similar in women (8.9%) and men (7.7%) and increases with age from 2.6% in 20 to 29 year olds up to 15.3% in participants aged 70 years and older. FI is not significantly associated with race/ethnicity, education, income, or marital status after adjusting for age. Independent risk factors in women are advancing age, loose or watery stools, more than 21 stools per week, multiple chronic illnesses, and urinary incontinence. Independent risk factors in men are age, loose or watery stools, poor self-rated health, and urinary incontinence. CONCLUSIONS FI is a prevalent age-related disorder. Chronic diarrhea is a strong modifiable risk factor that may form the basis for prevention and treatment.

Transperineal Three-Dimensional Ultrasound Imaging for Detection of Anatomic Defects in the Anal Sphincter Complex Muscles

BACKGROUND & AIMS Three-dimensional ultrasound (3D-US) imaging is a powerful tool to visualize various components of the anal sphincter complex, that is, the internal anal sphincter (IAS), the external anal sphincter (EAS), and the puborectalis muscle (PRM). Our goal was to determine the reliability of the 3D-US imaging technique in detecting morphologic defects in the IAS, EAS, and PRM. METHODS Transperineal 3D-US images were obtained in 3 groups of women: nulliparous (n = 13), asymptomatic parous (n = 20), and patients with fecal incontinence (FI) (n = 25). The IAS and EAS were assessed to determine the craniocaudal length of defects and were scored as follows: 0 = normal, 1 = less than 25%, 2 = 25% to 50%, 3 = 50% to 75%, and 4 = greater than 75%. The 2 PRM hemislings were scored separately as follows: 0 = normal, 1 = less than 50% abnormal, and 2 = greater than 50% length abnormal. Subjects were grouped according to the score as follows: normal (score 0), minor abnormality (scores of 1 and 2), and major abnormality (scores of 3 and 4). Three observers performed the scoring. RESULTS The 3D-US allowed detailed evaluation of the IAS, EAS, and PRM. The inter-rater reliability for detecting the defects ranged between 0.80 and 0.95. Nullipara women did not show any significant defect but the defects were quite common in asymptomatic parous and FI patients. The prevalence of defects was greater in the FI patients as compared with the asymptomatic parous women. CONCLUSIONS 3D-US yields reliable assessment of morphologic defects in the anal sphincter complex muscles.

Impact of the 2011 FDA transvaginal mesh safety update on AUGS members' use of synthetic mesh and biologic grafts in pelvic reconstructive surgery.

Objective To describe the frequency of use and recent change in use of synthetic mesh and biologic grafts in pelvic organ prolapse (POP) and stress urinary incontinence surgery by American Urogynecology Society (AUGS) members. Methods An electronic survey of AUGS members was conducted between December 2011 and January 2012. Frequency of graft use in POP (overall and by transvaginal and transabdominal approaches) and stress urinary incontinence surgery was queried relative to the timing of the 2011 Food and Drug Administration (FDA) safety update. Rates of materials’ use before and after the statement were compared using Wilcoxon signed rank test. Results Fifty-three percent (507/962) of AUGS members responded and were included in analysis; 79% were urogynecologists. Before the FDA warning, in POP surgery, most (90%) used synthetic mesh and fewer (34%) used biologic grafts; 99% used synthetic mesh slings. After the FDA statement, respondents reported an overall decrease in the percent of POP cases in which they used synthetic mesh (P < 0.001) but no change in biologic graft use for POP (P = 0.37) or synthetic mesh sling use (P = 0.10). Specifically, transvaginal mesh use decreased: 40% reported decreased use and 12% stopped use. However, transvaginal mesh was still used by 61% of respondents in at least some cases. No change (62%) or increased use (12%) of mesh was reported for transabdominal POP procedures. Conclusions Synthetic mesh use in transvaginal POP surgery decreased after the 2011 FDA safety update, but synthetic mesh use for transabdominal POP repair and sling procedures and overall biologic graft use in POP surgery did not decrease.

Transperineal three-dimensional ultrasound in evaluating anal sphincter muscles.

Objectives To evaluate whether transperineal three‐dimensional (3D) ultrasound can be used to depict normal anal sphincter anatomy and to measure the thickness of muscle layers and the anteroposterior length of the levator hiatus.

Comparison of levator ani muscle avulsion injury after forceps-assisted and vacuum-assisted vaginal childbirth.

OBJECTIVE: Using three-dimensional transperineal ultrasonography, we compared the prevalence of levator ani muscle injury after forceps with vacuum-assisted vaginal delivery. METHODS: This was a retrospective cohort study. Women who experienced at least one forceps delivery (across all deliveries) were compared with women who had at least one vacuum birth. On average, participants were 10 years from the index delivery. Three-dimensional transperineal ultrasound volumes were captured as cine loops at rest with Valsalva and with pelvic floor muscle contraction. The primary outcome was levator ani muscle avulsion. Secondary outcomes included hiatal diameter and area. Prevalence of pelvic floor disorders was also compared between the two delivery groups. RESULTS: Among 45 participants in the forceps group and 28 participants in the vacuum group, there were no differences between groups in maternal age at first delivery, parity, body mass index, birth weight, episiotomy, or duration of second stage. History of anal sphincter laceration was more common in the forceps group. The prevalence of levator ani muscle avulsion was significantly higher after forceps compared with vacuum delivery (22/45 [49%] compared with 5/28 [18%], P=.012, prevalence ratio 2.74, 95% confidence interval [CI] 1.17–6.40, odds ratio 4.40 [95% CI 1.42–13.62]). Controlling for delivery type, levator ani muscle avulsion was associated with symptoms of prolapse (P=.036), although objective evidence of prolapse was not significantly different between groups (P=.20). CONCLUSION: Ten years after delivery, the prevalence of levator avulsion is almost tripled after forceps compared with vacuum-assisted vaginal delivery. LEVEL OF EVIDENCE: II

In patients with rectoceles and obstructed defecation syndrome, surgery should be the option of last resort

BACKGROUND The indications for operation in patients with obstructed defecation syndrome (ODS) with rectocele are not well defined. METHODS A total of 90 female patients with ODS and rectocele were prospectively evaluated and treated with fiber supplements and biofeedback training. Univariate and multivariate regression was used to determine factors predictive of failing medical management. RESULTS Obstructive symptoms were the most prevalent presenting complaint (82.2%). Ultimately, 71.1% of patients responded to medical management and biofeedback. Multivariate regression analysis suggested that the presence of internal intussusception was associated with a lower chance of undergoing surgery to address ODS symptoms [odds ratio 0.18; P = .05], whereas inability to expel balloon, contrast retention on defecography, and splinting were not (P ≥ .15). CONCLUSION Rectoceles with concomitant intussusception in patients with ODS appear to portend a favorable response to biofeedback and medical management. We argue that all patients considered for surgery for rectoceles because of ODS should first undergo appropriate bowel retraining.

Pelvic floor imaging.

Pelvic floor ultrasound is a valuable adjunct in elucidation of cause, diagnosis, and treatment of pelvic floor disorders. Three-dimensional ultrasound specifically has been shown to have many advantages over conventional imaging modalities. Proper evaluation of pelvic floor muscle function, strength, and integrity is an important component of diagnosis and treatment of pelvic floor disorders. The pelvic floor muscle training used to change the structural support and strength of muscle contraction requires clinicians to be able to conduct high-quality measurements of pelvic floor muscle function and strength. Ultrasound is a useful modality to assess the pelvic floor and its function. As practitioners become more familiar with the advantages and capabilities of ultrasound, this tool should become part of routine clinical practice in evaluation and management of pelvic floor disorders.

Anatomical disruption and length-tension dysfunction of anal sphincter complex muscles in women with fecal incontinence.

BACKGROUND: Anal sphincter complex muscles, the internal anal sphincter, external anal sphincter, and puborectalis muscles, play an important role in the anal continence mechanism. Patients with symptoms of fecal incontinence have weak anal sphincter complex muscles; however, their length-tension properties and relationship to anatomical disruption have never been studied. OBJECTIVE: This study aimed to assess the anatomy of the anal sphincter complex muscles with the use of a 3-dimensional ultrasound imaging system and to determine the relationship between the anatomical defects and the length-tension property of external anal sphincter and puborectalis muscles in women with incontinence symptoms and in control subjects. DESIGN: Severity of anal sphincter muscle damage was determined by static and dynamic 3-dimensional ultrasound imaging. The length-tension property was determined by anal and vaginal pressure with the use of custom-designed probes. PATIENTS: Forty-four asymptomatic controls and 24 incontinent patients participated in this study. MAIN OUTCOME MEASURES: The anatomical defects and length-tension dysfunction of anal sphincter complex muscles in patients with fecal incontinence were evaluated. RESULTS: The prevalence of injury to sphincter muscles is significantly greater in the incontinent patients than in the controls. Eighty-five percent of patients but only 9% controls reveal damage to ≥2 of the 3 muscles of the anal sphincter complex. Anal and vaginal squeeze pressures increased with the increase in the probe size (length-tension curve) in the majority of controls. In patients, the increase in anal and vaginal squeeze pressures was either significantly smaller than in controls or it decreased with the increasing probe size (abnormal length-tension). LIMITATIONS: We studied patients with severe symptoms. Whether our findings are applicable to patients with mild to moderate symptoms remains to be determined. CONCLUSIONS: The length-tension property of the external anal sphincter and puborectalis muscles is significantly impaired in incontinent patients. Our findings have therapeutic implications for the treatment of anal incontinence.

Minimally invasive apical sacropexy: a retrospective review of laparoscopic and robotic operating room experiences.

Objectives Minimally invasive apical sacropexies (MI-APSC) can be performed using robotics or laparoscopy. We hypothesized that operative characteristics of MI-APSC, laparoscopic (LSC) and robotic (RSC), were similar. The objective of our study was to compare operative characteristics, objective prolapse outcomes, and robotic learning curve. Methods Ninety-two women planning MI-APSC for treatment of apical pelvic organ prolapse from 2006 to 2010 were included in the study. The primary outcome was operative time. The secondary outcomes included estimated blood loss, rate of conversion, intraoperative complications, hospital stay, and objective prolapse outcome. We also analyzed the robotic learning curve. Statistical analysis included independent samples t test, Wilcoxon rank sum test, &khgr;2, and multiple logistic regressions; significance was set at P < 0.05. Learning curve was graphed with moving average and analyzed with moving block technique. Results Forty-eight RSCs and 43 LSCs were analyzed. Mean operative times were LSC, 238 ± 59 minutes; and RSC, 242 ± 54 minutes. Robotic MI-APSC setup was longer (P = 0.02). Complications, conversions, estimated blood loss and hospital stay were low and similar between groups. Patients’ characteristics were similar. Concomitant procedures produced longer operative times. Conclusions Operating room experiences with laparoscopic- and robotic-assisted approaches to MI-APSC were similar, but setup time is longer for the robotic-assisted approach. The robotic learning curve is short for surgeons who have experience with LSC.

Pyometra after Le Fort colpocleisis resolved with interventional radiology drainage.

BACKGROUND: Le Fort colpocleisis is a surgical treatment option for advanced pelvic organ prolapse in women who are willing to give up future vaginal sexual function. Pelvic abscess, or pyometra, after Le Fort colpocleisis has been reported and is thought to be related to inadequate lateral drainage channels. To date, these cases of postoperative pyometra have been managed using hysterectomy. CASE: We report a case of pyometra after a Le Fort colpocleisis conservatively managed with interventional radiologically guided abscess drainage and dilation of the lateral drainage tracts. CONCLUSION: Interventional radiology drainage and manual dilation of the lateral drainage tracts can be used as an alternative to hysterectomy in managing Pyometra after a Le Fort colpocleisis.