Prevalence and correlates of fecal incontinence in community-dwelling older adults

Relationship Between Hemoglobin A1c and Fecal Incontinence in a Nationwide Cohort Study

INTRODUCTION

Gastrointestinal manifestations of diabetes include a variety of symptoms, including fecal incontinence (FI). We investigated the relationship between hemoglobin A1c and FI among US adults in a large, population-based survey.

METHODS

We identified adults (≥ 20 years) who completed the bowel health questionnaire and had A1c data in the National Health and Nutrition Examination Survey from 2005 to 2010 (N = 13,787). FI was defined as any involuntary loss of mucus, liquid, or solid stool during the last 30 days. Adjusted odds ratios (aORs) for FI were estimated in a multivariable logistic model according to A1c. Subgroup analyses examined relevant characteristics.

RESULTS

We identified 1283 (9.3%) adults with FI. A1c was associated with a 26% increase in the odds of FI (crude OR 1.26, 95% CI 1.20-1.33), which persisted after stepwise adjustment for age, demographic factors, and comorbidities (aOR 1.09, 95% CI 1.01-1.17). In subgroup analyses, A1c was associated with FI in diabetes (aOR 1.13, 95% CI 1.01-1.26), women (aOR 1.15, 95% CI 1.02-1.3), those < 65 years of age (aOR 1.17, 95% CI 1.09-1.25), overweight/obesity (aOR 1.1, 95% CI 1.02-1.20), non-white (aOR 1.1, 95% CI 1.01-1.20), and those with solid stool FI (aOR 1.17, 95% CI 1.04-1.32).

CONCLUSION

Increasing A1c was associated with an increased odds of FI. Our study provides insights into subgroups of patients who may benefit from interventions aimed at glucose control to reduce this risk of FI.

Epidemiology of Rome IV Fecal Incontinence in Japan: An Internet Survey of 9995 Individuals

BACKGROUND

Fecal incontinence (FI) is a debilitating condition defined as recurrent uncontrolled passage of fecal material according to Rome IV. Although FI greatly impacts patients' health-related quality of life (HRQOL), there have been few studies about the prevalence of FI in the Japanese general population. The aim of this study was to investigate the epidemiology of FI using Rome IV criteria in Japan.

METHODS

This was a cross-sectional internet survey for Japanese individuals aged 18 to 79 years using a questionnaire about demographics, comorbidities, lifestyle, abdominal symptoms, bowel habits, HRQOL, and disorders of gut-brain interaction according to Rome IV diagnostic criteria. Multivariate linear regression analysis identified factors associated with FI fulfilling Rome IV criteria (Rome IV FI).

RESULTS

Overall, 9995 subjects were analyzed. Of which, 9.5% of the participants had at least one episode of FI in the last 3 months, and the prevalence of Rome IV FI was 1.2%. HRQOL was significantly impaired in patients with Rome IV FI compared to continent individuals. Major functional bowel disorders overlapped with 39.5% of Rome IV FI where functional diarrhea (25.8%) was the most predominant. The overlap further impaired HRQOL in Rome IV FI patients. Alcohol consumption (odds ratio 1.82, 95% CI 1.24-2.66, p = 0.002) was independently related to Rome IV FI apart from gastroesophageal reflux disease, irritable bowel syndrome, functional abdominal bloating/distension, and functional diarrhea.

CONCLUSIONS

The prevalence of Rome IV FI was 1.2% in Japan. Further study is warranted to investigate the effect of lifestyle modification on the management of FI.

Prevalence of depression and anxiety in women with pelvic floor dysfunctions: A systematic review and meta-analysis

BACKGROUND

Female pelvic floor dysfunction (PFD) is a common condition affecting the emotional well-being of women.

OBJECTIVE

To estimate the prevalence of depressive and anxiety symptoms in women with PFD. SEARCH STRATEGY, SELECTION CRITERIA, DATA COLLECTION AND ANALYSIS: Following prospective registration (PROSPERO CRD42022362095) we conducted a search of three electronic databases (PubMed, Web of Science and Scopus) from inception to April 2023 without language restriction to capture studies reporting the prevalence of depression/anxiety among women with PFD (chronic pelvic pain [CPP], urinary incontinence [UI], pelvic organ prolapse [POP], and/or fecal incontinence [FI]). Only studies with validated tools were included. Data extraction and study quality assessment were performed by two independent reviewers. Stratifying by type of PFD, rates of depression and anxiety were pooled using random effects model computing 95% confidence interval (CI) and assessing heterogeneity using the I2 statistic. Funnel plots were used to detect potential reporting biases and small-study effects.

MAIN RESULTS

The search yielded 767 articles, from which 54 studies containing 632 605 women were included. All the studies were high quality. The prevalence of depression was: CPP 26.8% (95% CI: 19.2-34.4, I2 = 98.7%; 12 studies, 4798 participants with 491 cases; Egger's P value = 0.009); UI 26.3% (95% CI: 19.4-33.2, I2 = 99.9%; 26 studies, a total of 346 114 participants with 25 050 cases; Egger's P value = 0.944); POP 34.9% (95% CI: 24.3-45.6, I2 = 68%; three studies, 297 participants with 104 cases; Egger's P value = 0.973); and FI 25.3% (95% CI: 0.68-49.9, I2 = 99.7%; six studies, 14 663 participants with 1773 cases; Egger's P value = 0.780). The prevalence of anxiety was: CPP 29.5% (95% CI: 16.3-42.7, I2 = 97.7%; nine studies, 2483 participants with 349 cases; Egger's P value = 0.001); UI 46.91% (95% CI: 39.1-54.6, I2 = 99.6%; 11 studies, 198 491 participants with 40 058 cases; Egger's P value = 0.337); and POP 28% (95% CI: 13.6-42.4, I2 = 89%; three studies with 355 participants with 90 cases; Egger's P value = 0.306).

CONCLUSION

The prevalence of mental health illness was variable in the different types of PFDs. This meta-analysis helps quantify the burden of depression and anxiety in PFD and will help inform the policies regarding screening of emotional well-being by healthcare professionals engaged in care of women with PFD.

The association between vitamin-D deficiency and fecal incontinence

BACKGROUND

Vitamin-D is essential for musculoskeletal health. We aimed to determine whether patients with fecal incontinence (FI): (1) are more likely to have vitamin-D deficiency and, (2) have higher rates of comorbid medical conditions.

METHODS

We examined 18- to 90-year-old subjects who had 25-hydroxy vitamin-D levels, and no vitamin-D supplementation within 3 months of testing, in a large, single-institutional electronic health records dataset, between 2017 and 2022. Cox proportional hazards survival analysis was used to assess association of vitamin-D deficiency on FI.

KEY RESULTS

Of 100,111 unique individuals tested for serum 25-hydroxy vitamin-D, 1205 (1.2%) had an established diagnosis of FI. Most patients with FI were female (75.9% vs. 68.7%, p = 0.0255), Caucasian (66.3% vs. 52%, p = 0.0001), and older (64.2 vs. 53.8, p < 0.0001). Smoking (6.56% vs. 2.64%, p = 0.0001) and GI comorbidities, including constipation (44.9% vs. 9.17%, p = 0.0001), irritable bowel syndrome (20.91% vs. 3.72%, p = 0.0001), and diarrhea (28.55% vs. 5.2%, p = 0.0001) were more common among FI patients. Charlson Comorbidity Index score was significantly higher in patients with FI (5.5 vs. 2.7, p < 0.0001). Significantly higher proportions of patients with FI had vitamin-D deficiency (7.14% vs. 4.45%, p < 0.0001). Moreover, after propensity-score matching, rate of new FI diagnosis was higher in patients with vitamin-D deficiency; HR 1.9 (95% CI [1.14-3.15]), p = 0.0131.

CONCLUSION & INFERENCES

Patients with FI had higher rates of vitamin-D deficiency along with increased overall morbidity. Future research is needed to determine whether increased rate of FI in patients with vitamin-D deficiency is related to frailty associated with increased medical morbidities.

Global Prevalence of Fecal Incontinence in Community-Dwelling Adults: A Systematic Review and Meta-analysis

BACKGROUND & AIMS

Fecal incontinence (FI) can considerably impair quality of life. Through a systematic review and meta-analysis, we sought to determine the global prevalence and geographic distribution of FI and to characterize its relationship with sex and age.

METHODS

We searched PubMed, Web of Science, and Cochrane Library databases to identify population-based surveys of the prevalence of FI.

RESULTS

Of the 5175 articles identified, the final analysis included 80 studies; the median response rate was 66% (interquartile range [IQR], 54%-74%). Among 548,316 individuals, the pooled global prevalence of FI was 8.0% (95% confidence interval [CI], 6.8%-9.2%); by Rome criteria, it was 5.4% (95% CI, 3.1%-7.7%). FI prevalence was greater for persons aged 60 years and older (9.3%; 95% CI, 6.6%-12.0%) compared with younger persons (4.9%; 95% CI, 2.9%-6.9%) (odds ratio [OR], 1.75; 95% CI, 1.39-2.20), and it was more prevalent among women (9.1%; 95% CI, 7.6%-10.6%) than men (7.4%; 95% CI, 6.0%-8.8%]) (OR, 1.17; 95% CI, 1.06-1.28). The prevalence was highest in Australia and Oceania, followed by North America, Asia, and Europe, but prevalence could not be estimated in Africa and the Middle East. The risk of bias was low, moderate, and high for 19 (24%), 46 (57%), and 15 (19%) studies, respectively. Exclusion of studies with high risk of bias did not affect the prevalence of FI or heterogeneity. In the meta-regression, the high study heterogeneity (I2 = 99.61%) was partly explained by age.

CONCLUSIONS

Approximately 1 in 12 adults worldwide have FI. The prevalence is greater among women and older people.

Is percutaneous tibial nerve stimulation (PTNS) effective for fecal incontinence (FI) in adults compared with sham electrical stimulation? A meta-analysis

BACKGROUND

Sacral nerve neuromodulation (SNM) has been considered the optimal second-line treatment for fecal incontinence (FI). However, SNM involves high cost and requires highly skilled operators. Percutaneous tibial nerve stimulation (PTNS) has emerged as an alternative treatment modality for FI, yielding varying clinical outcomes. We conducted this meta-analysis to evaluate the effectiveness and safety of PTNS compared to sham electrical stimulation for FI.

METHODS

PubMed, Embase, Web of Science, and the Cochrane Library were searched for studies from May 12, 2012 to May 12, 2022.

RESULTS

Four randomized controlled studies were included in this review, involving a total of 439 adult patients with FI (300 in the PTNS group and 194 in the sham electrical stimulation group). Our meta-analysis revealed that PTNS demonstrated superior efficacy in reducing weekly episodes of FI compared to the control groups (MD - 1.6, 95% CI - 2.94 to - 0.26, p = 0.02, I2 = 30%). Furthermore, a greater proportion of patients in the PTNS group reported more than a 50% reduction in FI episodes per week (RR 0.73, 95% CI 0.57-0.94, p = 0.02, I2 = 6%). However, no significant differences were observed in any domains of the FI Quality of Life (QoL) and St Mark's incontinence scores (MD - 2.41, 95% CI - 5.1 to 0.27, p = 0.08, I2 = 67%). Importantly, no severe adverse events related to PTNS were reported in any of the participants.

CONCLUSIONS

Our meta-analysis revealed that PTNS was more effective than sham stimulation in reducing FI episodes and led to a higher proportion of patients reporting more than a 50% reduction in weekly FI episodes.

Evaluation of the effect of biofeedback in women with urinary and fecal incontinence referring to the hospitals of Islamic Azad university of medical sciences, Tehran branch, Iran (2021)

Background and Purpose

Urinary incontinence (URIN) and fecal incontinence (FEIN) are common in women, which affect various aspects of their daily life and general health. Therefore, the main purpose of this study was to evaluate the effect of biofeedback (BFB) in women with urinary and FEIN referring to the hospitals of Islamic Azad University of Medical Sciences, Tehran branch, Iran (2021).

Materials and Methods

This research was a cohort study that was conducted on 100 women with urinary and FEIN who were referred to selected hospitals of the Islamic Azad University of Medical Sciences, Tehran branch. In this study, before and after BFB, the amount of urinary and FEIN in patients was measured and finally compared by SPSS-ver. 16 software.

Results

The results of this study showed that the frequency of patients with URIN and FEIN was equal to 66 (66%) and 34 (66%) patients, respectively. After treatment with BFB, 39 (59.1%) patients with URIN and 39 (59.1%) patients with FEIN had symptom improvement. The mean body mass index and the number of pregnancies in patients who improved urinary and FEIN symptoms after BFB were significantly lower than in patients who did not improve symptoms.

Conclusion

Based on the findings of the present study, it can be concluded that effective and significant factors on the improvement of urinary and FEIN symptoms after BFB include fiber consumption, the presence of underlying diseases such as diabetes, blood pressure, type of delivery, history of depression, history of anorectal surgery, and vaginal delivery was difficult. In addition, based on the findings of the study, it can be said that BFB has an acceptable effect in improving the symptoms of urinary and FEIN in women, although additional studies are needed to confirm the results.

Study on 3D High-Resolution Anorectal Manometry Interrater Agreement in the Evaluation of Dyssynergic Defecation Disorders

Anorectal manometry measurements exhibit significant interrater variability. Newer techniques like 3D high-resolution anorectal manometry (3D-HRAM) have the potential to enhance diagnostic accuracy and our understanding of defecation disorders. However, the extent of interrater variability in 3D-HRAM is still unknown. Between January 2020 to April 2022, patients referred for pelvic floor physical therapy (PFPT) due to functional defecation complaints underwent 3D-HRAM testing. In a retrospective analysis, three expert raters independently evaluated the 3D-HRAM results in a blinded matter to assess interrater agreement. The evaluation also determined the level of agreement concerning dyssynergic patterns during simulated defecation. The 3D-HRAM results of 50 patients (37 females) were included. Twenty-nine patients had complaints of fecal incontinence, eleven patients had chronic constipation, and ten patients had several other complaints. There was a substantial agreement (kappa 0.612) between the raters concerning the 3D images on dyssynergic patterns during simulated defecation. Our study emphasizes the need for standardized guidelines in evaluating 3D-HRAM test results to reduce subjectivity and further improve agreement among raters. Implementing these guidelines could improve diagnostic consistency and enhance personalized treatment strategies, increasing the reliability and usefulness of 3D-HRAM testing in clinical practice.

Differences in Anorectal Manometry Values Among Women With Fecal Incontinence in a Racially, Ethnically, and Socioeconomically Diverse Population

IMPORTANCE

Anorectal manometry (ARM) is a valuable diagnostic and therapeutic tool that can both aid in identifying mechanisms contributing to fecal incontinence (FI) and inform management strategies. Consensus on standard reference range values has not been established, and women of varying racial and ethnic backgrounds are not well-represented in the current literature.

OBJECTIVE

We aimed to compare ARM values between women of different racial and ethnic groups with FI.

STUDY DESIGN

We conducted a retrospective cross-sectional study of women with FI who underwent ARM at a tertiary health system in an urban underserved community between 2016 and 2021. Demographic information and ARM values were collected from the medical record. Socioeconomic status (SES) was represented by the percent of the population living below the poverty line according to zip code using U.S. census data. Anorectal manometry values were compared between racial and ethnic groups, and multivariable logistic regression was conducted to control for patient characteristics.

RESULTS

Fifty-eight women were included in the analysis: 33% Hispanic, 22% Black, and 45% White. Hispanic and Black women had higher body mass index and higher rates of diabetes and loose stools and were of significantly lower SES compared with White women. Black and Hispanic women had significantly lower thresholds for volume at first sensation and higher mean anal squeeze pressure. Differences were maintained after controlling for body mass index, diabetes, SES, and diarrhea (P = 0.03 and P = 0.01, respectively). Other ARM values were not significantly different between groups.

CONCLUSIONS

Racial and ethnic differences in ARM values among women with FI exist. Further studies are needed to determine whether these differences have an impact on symptom severity, treatment selection and outcomes, and patient satisfaction.

Fecal incontinence: incidence and risk factors from the SABE (Health, Wellbeing and Aging) study

INTRODUCTION AND HYPOTHESIS

This study aimed to estimate the incidence of fecal incontinence (FI) and identify risk factors in a cohort of older individuals.

METHODS

In 2006, individuals aged ≥ 60 years were selected from the SABE study. The dependent variable was FI in 2010. FI was assessed using the question: "In the last 12 months, have you ever lost control of bowel movements or stools?" Incidence was measured in units of per 1000 person-years. Multivariate analysis was used to assess risk factors for FI.

RESULTS

This study was the first to examine the incidence of FI in older Brazilian individuals. In total, 1413 individuals were included; mean age was 74.5 years, and 864 (61.8%) participants were women. FI prevalence rates were 4.7% for men and 7.3% for women. Incidence rate of FI was 16.3 and 22.2 per 1000 person-years for men and women, respectively. The risk of FI was greater among women aged ≥ 75 years, with severe symptoms of depression, cancer (other than skin) and chronic obstructive pulmonary disease (COPD). In men, the risk of FI was greater among those with poor literacy (up to 3 years of schooling), an Instrumental Activities of Daily Living (IADL) category of 1-4 and those who self-reported "bad/very bad" health status.

CONCLUSIONS

The FI incidence rate was high. The identified risk factors were age ≥ 75 years, with severe symptoms of depression, cancer and COPD (women); having up to 8 years of schooling; IADL category of 1-4 and self-reported health status (men).

Prevalence and Risk Factors of Anal and Fecal Incontinence in Japanese Medical Personnel

Objectives

This study aimed to elucidate the actual state of anal incontinence (AI), fecal incontinence (FI), and the associated factors in Japanese medical personnel.

Methods

A questionnaire was completed by Japanese medical personnel after listening to lectures on AI. AI was defined as involuntary loss of feces or flatus.

Results

A total of 463 persons (mean age, 35.6 years; range, 20-91; male/female/no answer, 132/324/7) participated in the questionnaire. AI occurred in 34.4% of 450 participants (flatus/liquid stool/solid stool: 30.4%/3.6%/0.4%). AI was significantly more prevalent in females (male/female: 15.5%/42.7%, p < 0.001). AI and FI occurred significantly more prevalent in participants aged ≧40 years (p < 0.024). AI was significantly associated with childbirth, frequency of childbirth (more than three times), vaginal delivery, urinary incontinence, the style of urination/defecation, and a history of gynecologic surgery and systemic diseases (p < 0.05). Female gender and age as well as urinary incontinence and inability to defecate separately in female and previous colorectal disease and/or surgery in male were risk factors of AI by multivariate analysis (p < 0.05). FI was correlated with urinary incontinence.

Conclusions

AI and FI occurred in 34.4% and 4.0% of Japanese medical personnel, respectively. Gas incontinence was common in every age group. AI was associated with female gender, higher age group, urinary incontinence, the style of urination and defecation in female, and previous colorectal disease and/or surgery in male. FI was associated with urinary incontinence.

ACG Clinical Guidelines: Management of Benign Anorectal Disorders

Benign anorectal disorders of structure and function are common in clinical practice. These guidelines summarize the preferred approach to the evaluation and management of defecation disorders, proctalgia syndromes, hemorrhoids, anal fissures, and fecal incontinence in adults and represent the official practice recommendations of the American College of Gastroenterology. The scientific evidence for these guidelines was assessed using the Grading of Recommendations Assessment, Development and Evaluation process. When the evidence was not appropriate for Grading of Recommendations Assessment, Development and Evaluation, we used expert consensus to develop key concept statements. These guidelines should be considered as preferred but are not the only approaches to these conditions.

Healthcare Professionals' Perspective on Implementing a Detector of Behavioural Disturbances in Long-Term Care Homes

The number of Canadians with dementia is expected to rise to 674,000 in the years to come. Finding ways to monitor behavioural disturbance in patients with dementia (PwDs) is crucial. PwDs can unintentionally behave in ways that are harmful to them and the people around them, such as other residents or care providers. Current practice does not involve technology to monitor PwD behaviours. Events are reported randomly by nonstaff members or when a staff member notices the absence of a PwD from a scheduled event. This study aims to explore the potential of implementing a novel detector of behavioural disturbances (DBD) in long-term care homes by mapping the perceptions of healthcare professionals and family members about this technology. Qualitative information was gathered from a focus group involving eight healthcare professionals working in a tertiary care facility and a partner of a resident admitted in the same facility. Thematic analysis resulted in three themes: (A) the ability of the DBD to detect relevant dementia-related behavioural disturbances that are typical of PwD; (B) the characteristics of the DBD and clinical needs and preferences; (C) the integration of the DBD into daily routines. The results tend to confirm the adequacy of the DBD to the day-to-day needs for the detection of behavioural disturbances and hazardous behaviours. The DBD was considered to be useful and easy to use in the tertiary care facility examined in this study. The participants intend to use the DBD in the future, which means that it has a high degree of acceptance.

Japanese Practice Guidelines for Fecal Incontinence Part 1-Definition, Epidemiology, Etiology, Pathophysiology and Causes, Risk Factors, Clinical Evaluations, and Symptomatic Scores and QoL Questionnaire for Clinical Evaluations-English Version

Fecal incontinence (FI) is defined as involuntary or uncontrollable loss of feces. Gas incontinence is defined as involuntary or uncontrollable loss of flatus, while anal incontinence is defined as the involuntary loss of feces or flatus. The prevalence of FI in people over 65 in Japan is 8.7% in the male population and 6.6% among females. The etiology of FI is usually not limited to one specific cause, with risk factors for FI including physiological factors, such as age and gender; comorbidities, such as diabetes and irritable bowel syndrome; and obstetric factors, such as multiple deliveries, home delivery, first vaginal delivery, and forceps delivery. In the initial clinical evaluation of FI, the factors responsible for individual symptoms are gathered from the history and examination of the anorectal region. The evaluation is the basis of all medical treatments for FI, including initial treatment, and also serves as a baseline for deciding the need for a specialized defecation function test and selecting treatment in stages. Following the general physical examination, together with history taking, inspection (including anoscope), and palpation (including digital anorectal and vaginal examination) of the anorectal area, clinicians can focus on the causes of FI. For the clinical evaluation of FI, it is useful to use Patient-Reported Outcome Measures (PROMs), such as scores and questionnaires, to evaluate the symptomatic severity of FI and its influence over quality of life (QoL).

Constipation and Fecal Incontinence in the Elderly

PURPOSE OF REVIEW

To review the epidemiology, pathogenesis, clinical features, and management of primary constipation and fecal incontinence in the elderly.

RECENT FINDINGS

Among elderly people, 6.5%, 1.7%, and 1.1% have functional constipation, constipation-predominant IBS, and opioid-induced constipation. In elderly people, the number of colonic enteric neurons and smooth muscle functions is preserved; decreased cholinergic function with unopposed nitrergic relaxation may explain colonic motor dysfunction. Less physical activity or dietary fiber intake and postmenopausal hormonal therapy are risk factors for fecal incontinence in elderly people. Two thirds of patients with fecal incontinence respond to biofeedback therapy. Used in combination, loperamide and biofeedback therapy are more effective than placebo, education, and biofeedback therapy. Vaginal or anal insert devices are another option. In the elderly, constipation and fecal incontinence are common and often distressing symptoms that can often be managed by addressing bowel disturbances. Selected diagnostic tests, prescription medications, and, infrequently, surgical options should be considered when necessary.

Effect of oestrogen therapy on faecal incontinence in postmenopausal women: a systematic review

INTRODUCTION AND HYPOTHESIS

Faecal incontinence (FI) is prevalent in postmenopausal women. Oestrogen receptors have been identified in the anal sphincter and have been implicated in the pathogenesis and potential treatment. We sought to evaluate the literature regarding the impact of local and systemic oestrogen therapy on FI in postmenopausal women.

METHODS

A systematic review of all studies in postmenopausal women was performed to establish how oestrogen therapy affects FI. Eight articles were deemed eligible for inclusion following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Their quality was assessed using the Cochrane risk-of-bias tool (RoB-2) and Newcastle-Ottawa quality assessment scale.

RESULTS

One randomised controlled trial (RCT), two cohort studies, one observational and four cross-sectional studies were identified. The RCT showed an improvement in FI with anal oestrogen (p = 0.002), but this improvement was also observed in the placebo arm (p = 0.013) and no difference was seen between these groups. A prospective observational study demonstrated significant improvement with an oestrogen patch (p = 0.004), but had no control group. Conversely, a large prospective cohort study demonstrated an increased hazard ratio of FI with current (1.32; 95% CI, 1.20-1.45) and previous oestrogen use (1.26; 95% CI, 1.18-1.34) compared with non-users.

CONCLUSION

All studies had a high risk of bias and had conflicting views on the effects of oestrogen on FI in postmenopausal women. This review has identified the need for further research in this area by highlighting the paucity of good research for evidence-based practice. We believe that a further RCT of local oestrogen is mandated to draw a valid conclusion.

Generation of myogenic progenitor cell-derived smooth muscle cells for sphincter regeneration

BACKGROUND

Degeneration of smooth muscles in sphincters can cause debilitating diseases such as fecal incontinence. Skeletal muscle-derived cells have been effectively used in clinics for the regeneration of the skeletal muscle sphincters, such as the external anal or urinary sphincter. However, little is known about the in vitro smooth muscle differentiation potential and in vivo regenerative potential of skeletal muscle-derived cells.

METHODS

Myogenic progenitor cells (MPC) were isolated from the skeletal muscle and analyzed by flow cytometry and in vitro differentiation assays. The differentiation of MPC to smooth muscle cells (MPC-SMC) was evaluated by immunofluorescence, flow cytometry, patch-clamp, collagen contraction, and microarray gene expression analysis. In vivo engraftment of MPC-SMC was monitored by transplanting reporter protein-expressing cells into the pyloric sphincter of immunodeficient mice.

RESULTS

MPC derived from human skeletal muscle expressed mesenchymal surface markers and exhibit skeletal myogenic differentiation potential in vitro. In contrast, they lack hematopoietic surface marker, as well as adipogenic, osteogenic, and chondrogenic differentiation potential in vitro. Cultivation of MPC in smooth muscle differentiation medium significantly increases the fraction of alpha smooth muscle actin (aSMA) and smoothelin-positive cells, while leaving the number of desmin-positive cells unchanged. Smooth muscle-differentiated MPC (MPC-SMC) exhibit increased expression of smooth muscle-related genes, significantly enhanced numbers of CD146- and CD49a-positive cells, and in vitro contractility and express functional Cav and Kv channels. MPC to MPC-SMC differentiation was also accompanied by a reduction in their skeletal muscle differentiation potential. Upon removal of the smooth muscle differentiation medium, a major fraction of MPC-SMC remained positive for aSMA, suggesting the definitive acquisition of their phenotype. Transplantation of murine MPC-SMC into the mouse pyloric sphincter revealed engraftment of MPC-SMC based on aSMA protein expression within the host smooth muscle tissue.

CONCLUSIONS

Our work confirms the ability of MPC to give rise to smooth muscle cells (MPC-SMC) with a well-defined and stable phenotype. Moreover, the engraftment of in vitro-differentiated murine MPC-SMC into the pyloric sphincter in vivo underscores the potential of this cell population as a novel cell therapeutic treatment for smooth muscle regeneration of sphincters.

Continence: Bowel and Bladder and Physical Function Decline in Women

Purpose of review

The purpose of this article is to review the various forms of incontinence, highlight their impact on older women, and to explore current literature regarding the link between physical activity, physical function, and incontinence.

Recent findings

Both urinary and fecal incontinence become more prevalent with age, and are associated with significant morbidity. In parallel, there is a well-established decline in physical function that occurs with age. Furthermore, incontinence has a bidirectional relationship with physical function decline. Given the known link between increasing physical activity and preserved physical function, there is an emerging body of literature seeking to determine whether increases in physical activity may also improve incontinence outcomes. We review some recent data on this topic.

Summary

Continence and physical function are two closely linked entities. Further research is needed to determine whether interventions that increase physical activity might result in improved continence outcomes.

BioSphincters to treat Fecal Incontinence in Nonhuman Primates

Loss of anorectal resting pressure due to internal anal sphincter (IAS) dysfunctionality causes uncontrolled fecal soiling and leads to passive fecal incontinence (FI). The study is focused on immediate and long-term safety and potential efficacy of bioengineered IAS BioSphincters to treat passive FI in a clinically relevant large animal model of passive FI. Passive FI was successfully developed in Non-Human Primates (NHPs) model. The implantation of autologous intrinsically innervated functional constructs resolved the fecal soiling, restored the resting pressure and Recto Anal Inhibitory Reflex (RAIR) within 1-month. These results were sustained with time, and efficacy was preserved up to 12-months. The histological studies validated manometric results with the regeneration of a well-organized neuro-muscular population in IAS. The control groups (non-treated and sham) remained affected by poor anal hygiene, lower resting pressure, and reduced RAIR throughout the study. The pathological assessment of implants, blood, and the vital organs confirmed biocompatibility without any adverse effect after implantation. This regenerative approach of implanting intrinsically innervated IAS BioSphincters has the potential to offer a better quality of life to the patients suffering from FI.

Association of race with anal incontinence in parous women

INTRODUCTION AND HYPOTHESIS

To investigate the relationship between race and anal incontinence (AI). Our hypotheses were (a) AI symptoms are similar between white and black women and (b) asymptomatic black and white women are equally likely to develop AI over one year of prospective observation.

METHODS

Parous women enrolled in a longitudinal cohort study were assessed for AI symptoms annually using Epidemiology of Prolapse and Incontinence Questionnaire. An AI score > 0 indicated any bother from AI; a score > 22.8 indicated clinically significant AI. We compared the odds of AI scores >0 at the visit level between white vs black women with logistic regression models using generalized estimating equations. We also estimated the odds of new AI symptoms at time T + 1(one year later) among women free of AI symptoms at time T comparing white vs black women. In the latter analysis, we considered new AI symptoms to be represented by scores above 11.4. Covariates included in the adjusted models were: mode of delivery, obstetrical anal sphincter injuries, body mass index, age at the first delivery, and parity at enrollment.

RESULTS

Among 1256 participants, 189 (15.0%) were black. AI score = 0 was observed at 74.2% (= 5122/6902) person-visits. The adjusted odds ratio of AI score > 0 was 1.83 (95% CI 1.24, 2.70) for white vs black women. Across 4364 visit pairs with AI score = 0 at time T, 203 (4.7%) had AI score > 11.4 at visit T + 1 and white race significantly increased the odds of developing symptoms at time T + 1 (adjusted OR = 2.26, 95% CI 1.28, 3.98).

CONCLUSIONS

In an analysis that controlled for mode of delivery, obstetrical anal sphincter injuries, obesity, age at first delivery, and parity, white race was significantly associated with AI symptoms at any point in time as well as to the development of AI over one year of observation.

Effectiveness of Autologous Fat Graft in Treating Fecal Incontinence

Purpose

The most common risk factor for fecal incontinence (FI) is obstetric injury. FI affects 1.4%–18% of adults. Most patients are unaware when they are young, when symptoms appear suddenly and worsen with aging. Autologous fat graft is widely used in cosmetic surgical field and may substitute for injectable bulky agents in treating FI. Authors have done fat graft for past several years. This article reports the effectiveness of the fat graft in treating FI and discusses satisfaction with the procedure.

Methods

Fat was harvested from both lateral thighs using 10-mL Luer-loc syringe. Pure fat was extracted from harvests and mixed with fat, oil, and tumescent through refinement. Fats were injected into upper border of posterior ano-rectal ring, submucosa of anal canal and intersphincteric space. Thirty-five patients with FI were treated with this method from July 2016 to February 2017 in Busan Hangun Hospital. They were 13 male (mean age, 60.8 years) and 22 female patients (mean age, 63.3 years). The Wexner score was checked before procedure. We evaluated outcome in outpatients by asking the patients. For 19 patients we checked the Wexner score after procedure.

Results

Symptom improved in 29 (82.9%), and not improved in 6 (17.1%). In 2 of 6 patients, they felt better than before procedure, although not satisfied. No improvement in 4. Mean Wexner score was 9.7 before procedure. There were no serious complications such as inflammation or fat embolism.

Conclusion

Autologous fat graft can be an effective alternative treatment for FI. It is safe and easy to perform, and cost effective.

Fecal Incontinence Symptoms and Impact in Older Versus Younger Women Seeking Care

BACKGROUND

The differential impact of aging on fecal incontinence symptom severity and condition-specific quality of life remains unclear.

OBJECTIVE

The purpose of this study was to characterize differences in symptom distress, quality of life, and anorectal physiology assessments in older versus younger women with fecal incontinence.

DESIGN

This was a cross-sectional study.

SETTINGS

This study was conducted at a tertiary genitorectal disorder clinic.

PATIENTS

Women presenting for fecal incontinence evaluation between 2003 and 2016 were classified as older or younger based on age ≥65 or <65 years.

MAIN OUTCOME MEASURES

The main outcomes were symptom-specific quality of life and distress measured by validated questionnaires (the Modified Manchester Health Questionnaire containing the Fecal Incontinence Severity Index); anorectal physiology and anatomy were assessed by manometry and endoanal ultrasound.

RESULTS

Of 879 subjects, 286 and 593 were classified as older and younger (mean ages, 71.4 ± 5.3 y and 51.3 ± 10.5 y). Solid stool leakage was more frequent in older women (83.2% vs 76.7%; p = 0.03), whereas liquid stool leakage (83.2% vs 82.8%; p = 0.88) and fecal urgency (76.9% vs 78.8%; p = 0.54) did not differ between groups. Mean symptom severity scores were similar between groups (28.0 ± 11.9 and 27.6 ± 13.5; p = 0.69); however, there was greater negative impact on quality of life among younger women (46.3 ± 22.0 vs 51.8 ± 21.8; p < 0.01). Multivariable linear regression controlling for pertinent covariates revealed younger age as an independent predictor for worse condition-specific quality-of-life scores (p < 0.01). Squeeze pressures were similar between groups, whereas younger women had greater resting pressures and higher rates of sphincter defects (external, 7.7% vs 20.2%; internal, 12.2% vs 26.8%; both p < 0.01).

LIMITATIONS

This study was limited by its lack of patient obstetric history and the duration of their incontinence symptoms.

CONCLUSIONS

Characteristics differ between older and younger women seeking care for fecal incontinence. The differential impact and age-related phenotypes may provide useful information for patient counseling and developing management algorithms for women with fecal incontinence. See Video Abstract at http://links.lww.com/DCR/A910.

A Profile of Older Adults With a History of Stroke Receiving Home Care in Ontario, Canada

The demand for home care services is increasing, yet the literature describing the clinical characteristics of community-dwelling individuals with a history of stroke who receive home care is limited. In this retrospective, cross-sectional, population-level study, data were sourced from home care recipients aged 65+ who had a routine assessment using the Resident Assessment Instrument for Home Care (RAI-HC) in Ontario between January 2007 and December 2011. The RAI-HC contains several health status indicators and validated health index scales. The association of a history of stroke on health status was assessed through a series of logistic regression models, adjusted for age, sex, and number of comorbidities. Sex differences were also explored. A change in odds of ≥25% was considered to indicate a clinically important finding. From the home care data ( N = 319,694), 56,909 individuals had a stroke diagnosis, with approximately 86% diagnosed with ≥3 chronic conditions. A stroke diagnosis was associated with a higher risk of limitations or impairments with communication, locomotion, continence, activities of daily living, and cognitive performance. A clinically meaningful difference was not observed for symptoms of depression. Few sex differences were observed. In an effort to support the development of effective home and community-based care programs, research is needed to understand differences in community-dwelling versus institutional populations. Community-dwelling individuals with a history of stroke show higher levels of impairment and limitations compared with those without, suggesting areas where home care resources could be improved to help manage the chronic effects of stroke.

Contextual factors associated with life-space mobility in community-dwelling older adults based on International Classification of Functioning, Disability and Health: protocol for a systematic review

INTRODUCTION

Mobility decline compromises functionality and quality of life in old age. Life-Space Assessment (LSA) evaluates mobility considering interaction between person and environment. The International Classification of Functioning, Disability and Health (ICF) is a reference to identify and categorise the personal and environmental contextual factors associated to the LSA. Our objective is identifying contextual factors that may influence life-space mobility of older community-dwelling adults based on ICF.

METHODS AND ANALYSIS

A systematic review of literature will be performed to identify studies published between 1 January 2001 and 10 May 2017 which investigates life-space mobility among older adults. Keywords will be entered into the electronic databases of MEDLINE (PubMed), EMBASE (OVID), CINHAL (EBSCO), Cochrane Central Register of Controlled Trials Cochrane Central (OVID), PsycINFO (EBSCO) and COCH (OVID). Five investigators will work on search databases and standardised screening of the articles. Mobility predictors will be separated into personal and environmental aspects, according to the ICF model. The results will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement, and then a meta-analysis will be performed, if applicable.

DISCUSSION

Knowledge about life-space mobility in community-dwelling older adults by examining related risk and protective aspects may help practitioners better approach older adults' mobility and prevent their decline in old age. Furthermore, researchers will have more clues for investigations into factors related to life-space mobility.

TRIAL REGISTRATION NUMBER

CRD42017064552.

Assessment, prevention and treatment of faecal incontinence in older people

Faecal incontinence is an impaired ability to control the passage of stool, often described as involuntary loss of solid or liquid stool, and the symptom of an underlying diagnosis. It is a common problem in older adults. Although not a life-threatening condition, it can have a significant negative effect on an individual's quality of life and adverse medical, social and economic consequences. Due to the taboo and stigmatising nature of the condition many individuals do not seek assistance. Healthcare professionals should take every opportunity to ask about faecal incontinence symptoms so that symptomatic relief and treatment interventions can be initiated. There are several conservative approaches available for the treatment of faecal incontinence, which should be considered as first line to target symptomatic relief.

Innervation asymmetry of the external anal sphincter in aging characterized from high-density intra-rectal surface EMG recordings

AIMS

The innervation zone asymmetry of the external anal sphincter (EAS) has been investigated as a risk factor for the development of fecal incontinence (FI). This study aims to utilize an intra-rectal high-density surface electromyogram (HD-sEMG) recording and advanced HD-sEMG decomposition technique to characterize the effects of aging on the asymmetry of EAS functional innervation.

METHODS

HD-sEMG signals were recorded intra-rectally from six healthy young and seven healthy elderly women during voluntary contractions of the EAS. EMG signals were decomposed into constituent motor unit action potentials (MUAPs) and the innervation zone of each decomposed motor unit was identified. Asymmetry index (AI) was defined and calculated for all subjects. The maximum squeezing pressures of the EAS were also measured for all subjects as a comparison.

RESULTS

The HD-sEMG decomposition and AI calculation were successfully performed from EMG data acquired from all the subjects. The AI values were 28.7 ± 17.0% for the young group and 55.6 ± 18.8% for the elderly group. The AI and EAS contraction strength were found to be negatively correlated (P < 0.05). A two-tailed student's t-test demonstrated a significant increase in AI with age by comparison between two groups (P < 0.05).

CONCLUSIONS

Our work demonstrates, for the first time, that EAS functional innervation tends to become increasingly asymmetrical with advancing age, and this increase is associated with a compromised anorectal function. Results suggest that the intra-rectal HD-sEMG will serve as an advanced tool for assessing and monitoring the anorectal neuromuscular function minimally invasively under different pathophysiological conditions.

Systemic effects of chronic obstructive pulmonary disease in young-old adults' life-space mobility

PURPOSE

The objective was to assess whether dyspnea, peripheral muscle strength and the level of physical activity are correlated with life-space mobility of older adults with COPD.

PATIENTS AND METHODS

Sixty patients over 60 years of age (40 in the COPD group and 20 in the control group) were included. All patients were evaluated for lung function (spirometry), life-space mobility (University of Alabama at Birmingham Study of Aging Life-Space Assessment), dyspnea severity (Modified Dyspnea Index), peripheral muscle strength (handgrip dynamometer), level of physical activity and number of daily steps (accelerometry). Groups were compared using unpaired t-test. Pearson's correlation was used to test the association between variables.

RESULTS

Life-space mobility (60.41±16.93 vs 71.07±16.28 points), dyspnea (8 [7-9] vs 11 [10-11] points), peripheral muscle strength (75.16±14.89 vs 75.50±15.13 mmHg), number of daily steps (4,865.4±2,193.3 vs 6,146.8±2,376.4 steps), and time spent in moderate to vigorous activity (197.27±146.47 vs 280.05±168.95 minutes) were lower among COPD group compared to control group (p<0.05). The difference was associated with the lower mobility of COPD group in the neighborhood.

CONCLUSION

Life-space mobility is decreased in young-old adults with COPD, especially at the neighborhood level. This impairment is associated to higher dyspnea, peripheral muscle weakness and the reduced level of physical activity.

Menopausal Hormone Therapy Is Associated With Increased Risk of Fecal Incontinence in Women After Menopause

BACKGROUND & AIMS

Low estrogen levels can contribute to development of fecal incontinence (FI) in women after menopause by altering neuromuscular continence mechanisms. However, studies have produced conflicting results on the association between menopausal hormone therapy (MHT) and risk of FI.

METHODS

We studied the association between MHT and risk of FI among 55,828 postmenopausal women (mean age, 73 years) who participated in the Nurses' Health Study, were enrolled since 2008, and with no report of FI. We defined incident FI as a report of at least 1 liquid or solid FI episode per month during 4 years of follow-up from self-administered, biennial questionnaires administered in 2010 and 2012. We used Cox proportional hazard models to calculate multivariate-adjusted hazard ratios and 95% confidence intervals (CIs) for FI risk in women receiving MHT, adjusting for potential confounding factors.

RESULTS

During more than 185,000 person-years of follow-up, there were 6834 cases of incident FI. Compared with women who never used MHT, the multivariate hazard ratio for FI was 1.26 (95% CI, 1.18-1.34) for past users of MHT and 1.32 (95% CI, 1.20-1.45) for current users. The risk of FI increased with longer duration of MHT use (P trend ≤ .0001) and decreased with time since discontinuation. There was an increased risk of FI among women receiving MHT that contained a combination of estrogen and progestin (hazard ratio, 1.37; 95% CI, 1.10-1.70) compared with estrogen monotherapy.

CONCLUSIONS

Current or past use of MHT was associated with a modestly increased risk of FI among postmenopausal women in the Nurses' Health Study. These results support a potential role for exogenous estrogens in the impairment of the fecal continence mechanism.

Mediating Effect of Social Participation on the Relationship between Incontinence and Depressive Symptoms in Older Chinese Women

Urinary and fecal incontinence affect older women's social participation and mental health. This study examined the relationship between incontinence severity and depressive symptoms, focusing on the mediating effect of social participation, based on secondary analysis of structured interview data collected in December 2010 from 467 women age 60 and over in mainland China. Incontinence was significantly and positively associated with depressive symptoms but negatively associated with social participation. Social participation was significantly and negatively associated with depressive symptoms and fully mediated the relationship between incontinence and depressive symptoms. These findings can inform mental health interventions for incontinent older women, including preventing and responding to depressive symptoms by promoting social participation.

The Differential Impact of Flatal Incontinence in Women With Anal Versus Fecal Incontinence

OBJECTIVE

The differential impact on quality of life (QOL) that leakage of both stool and flatus confers on women compared with stool only is unclear. Our aim was to characterize differences in symptom distress, impact on QOL, and anorectal testing among women with leakage of stool and flatus, stool only, and flatus only.

METHODS

A retrospective review was conducted of women undergoing evaluation of at least monthly bowel incontinence symptoms. Subjects were divided into the following 3 groups: liquid/solid stool and flatus (anal incontinence [AI]), liquid/solid stool only (fecal incontinence [FI]), and flatal only (FL). Baseline assessment included the Modified Manchester Health Questionnaire (MMHQ) including the Fecal Incontinence Severity Index (FISI), Short Form-12 (SF-12), as well as anorectal manometry and endoanal ultrasound evaluations.

RESULTS

Of 436 subjects, 381 had AI, 45 FI, and 10 FL. Significant between-group differences were noted in MMHQ (P = 0.0002) and FISI total scores (P < 0.0001) where women with AI reflected greater negative impact than women with FI. The Short Form-12 (mental and physical component summary scores) scores were similar in all 3 groups (P = 0.22, 0.08). Resting/squeeze pressures were significantly lower in AI and FI groups compared with FL (P = 0.0004), whereas rectal capacity was similar in all 3 groups. Although exploratory, MMHQ scores were similar between FI and FL groups, although FISI scores were higher in the FI group (P < 0.0001).

CONCLUSIONS

Women with AI have higher symptom specific distress and greater negative impact on QOL compared with women with FI. Treatment of all bowel incontinence symptoms is important to improve symptom-specific and general QOL.

Fecal Incontinence and Pelvic Floor Dysfunction in Women: A Review

Pelvic floor dysfunction and fecal incontinence is a common and debilitating condition in women, particularly as women age, and often goes under-reported to health care providers. It is important for providers to ask patients about possible symptoms. An algorithm for evaluation and treatment is presented. Current and future therapies are described and discussed.

Functional Anorectal Disorders

This report defines criteria and reviews the epidemiology, pathophysiology, and management of common anorectal disorders: fecal incontinence (FI), functional anorectal pain and functional defecation disorders. FI is defined as the recurrent uncontrolled passage of fecal material for at least 3 months. The clinical features of FI are useful for guiding diagnostic testing and therapy. Anorectal manometry and imaging are useful for evaluating anal and pelvic floor structure and function. Education, antidiarrheals and biofeedback therapy are the mainstay of management; surgery may be useful in refractory cases. Functional anorectal pain syndromes are defined by clinical features and categorized into three subtypes. In proctalgia fugax, the pain is typically fleeting and lasts for seconds to minutes. In levator ani syndrome (LAS) and unspecified anorectal pain the pain lasts more than 30 minutes, but in LAS there is puborectalis tenderness. Functional defecation disorders are defined by >2 symptoms of chronic constipation or irritable bowel syndrome with constipation, and with >2 features of impaired evacuation i.e., abnormal evacuation pattern on manometry, abnormal balloon expulsion test or impaired rectal evacuation by imaging. It includes two subtypes; dyssynergic defecation and inadequate defecatory propulsion. Pelvic floor biofeedback therapy is effective for treating LAS and defecatory disorders.

Functional Anorectal Disorders

This report defines criteria and reviews the epidemiology, pathophysiology, and management of common anorectal disorders: fecal incontinence (FI), functional anorectal pain and functional defecation disorders. FI is defined as the recurrent uncontrolled passage of fecal material for at least 3 months. The clinical features of FI are useful for guiding diagnostic testing and therapy. Anorectal manometry and imaging are useful for evaluating anal and pelvic floor structure and function. Education, antidiarrheals and biofeedback therapy are the mainstay of management; surgery may be useful in refractory cases. Functional anorectal pain syndromes are defined by clinical features and categorized into three subtypes. In proctalgia fugax, the pain is typically fleeting and lasts for seconds to minutes. In levator ani syndrome (LAS) and unspecified anorectal pain the pain lasts more than 30 minutes, but in LAS there is puborectalis tenderness. Functional defecation disorders are defined by >2 symptoms of chronic constipation or irritable bowel syndrome with constipation, and with >2 features of impaired evacuation i.e., abnormal evacuation pattern on manometry, abnormal balloon expulsion test or impaired rectal evacuation by imaging. It includes two subtypes; dyssynergic defecation and inadequate defecatory propulsion. Pelvic floor biofeedback therapy is effective for treating LAS and defecatory disorders.

Role of diet in fecal incontinence: a systematic review of the literature

INTRODUCTION AND HYPOTHESIS

The objective was to perform a systematic review of the literature to examine original research on the role of diet in fecal incontinence (FI) with a dual focus on dietary differences in FI and dietary treatments for FI.

METHODS

We searched the PubMed and Embase databases for any peer-reviewed original research in English on the role of diet in FI.

RESULTS

We identified 172 unique citations. After title review and exclusion of articles not reporting original research, 9 publications were included in the final review: 4 focused on dietary differences and 5 focused on dietary treatments for FI. Limited evidence indicates that macro- and micronutrient intake does not differ significantly in those with and without FI. However, certain foods were perceived to improve or exacerbate FI symptoms and these varied and were adjusted as part of self-care practices. A high-fiber diet may reduce incontinence frequency.

CONCLUSIONS

Data on the pathogenesis of FI from a dietary perspective are scant. Based on the limited data, dietary differences between those with and without FI provide little insight with the exception of fiber. Further studies are needed to elucidate treatments for FI using fiber and dietary modifications.

Impact of fecal incontinence and its treatment on quality of life in women

Fecal incontinence (FI) is a physically and psychosocially debilitating disorder which negatively impacts quality of life (QOL). It bears a significant burden not only on patients but also on their families, caretakers as well as society as a whole. Even though it is considered a somewhat common condition, especially as women age, the prevalence is often underestimated due to patients' reluctance to report symptoms or seek care. The evaluation and treatment of FI can be also hindered by lack of understanding of the current management options among healthcare providers and how they impact on QOL. This article provides a comprehensive review on the impact of FI and its treatment on QOL in women.

Fecal Incontinence: Community Prevalence and Associated Factors--A Systematic Review

BACKGROUND

Fecal incontinence is a chronic and debilitating condition with significant health burden. Despite its clinical relevance, the prevalence of fecal incontinence remains inconsistently described.

OBJECTIVE

This study aimed to systematically review the literature regarding the prevalence of and factors associated with fecal incontinence among community-dwelling adults.

DATA SOURCES

A search of the PubMed, Embase, and Cochrane databases was performed.

STUDY SELECTION

Studies that reported the prevalence of fecal incontinence and/or associated factors in a community-based (ie, unselected) adult population were included. Two independent assessors reviewed eligible articles.

MAIN OUTCOME MEASURES

Relevant data were extracted from each study and presented in descriptive form. The main outcome measures included the prevalence of fecal incontinence (adjusted and/or unadjusted), stratified for age and sex if reported; factors associated (and not associated) with fecal incontinence; and study quality, assessed using predefined criteria.

RESULTS

Of 3523 citations identified, 38 studies were included for review. The reported median prevalence of fecal incontinence was 7.7% (range, 2.0%-20.7%). Fecal incontinence equally affected both men (median, 8.1%; range, 2.3%-16.1%) and women (median, 8.9%; range, 2.0%-20.7%) and increased with age (15-34 years, 5.7%; >90 years, 15.9%). The study populations and diagnostic criteria used were heterogeneous, precluding any meaningful pooling of prevalence estimates. Study quality assessment revealed 6 high-quality studies, of which only 3 were performed in a representative sample. The median prevalence of fecal incontinence was higher in these studies at 11.2% (range, 8.3%-13.2%). The factors most commonly reported to be associated with fecal incontinence included increasing age, diarrhea, and urinary incontinence.

LIMITATIONS

Heterogeneity of studies precluded meaningful pooling or meta-analysis of data.

CONCLUSIONS

Fecal incontinence is a prevalent condition of equal sex distribution, affecting ≈1 in 8 community adults, and has identifiable associated factors. The paucity of high-quality prevalence studies emphasizes the need for future population-based studies that use standardized diagnostic criteria for fecal incontinence.

The bother of anal incontinence and St. Mark's Incontinence Score

BACKGROUND

Patient self-report is important in the assessment of the impact of anal incontinence (AI) on quality of life. This study aimed to (1) determine the correlation between total St. Mark's Incontinence Score (SMIS) and a single-item visual analogue scale (VAS) for bother from AI, and (2) determine the correlation between individual components of SMIS and VAS.

METHODS

This is a retrospective study conducted on a cohort of 516 women seen for symptoms of lower urinary tract and pelvic floor dysfunction between January 2013 and August 2014. If a woman responded "yes" to the question "Do you experience any leakage from the back passage/anus?" they were considered to have AI, and the SMIS was administered. They were also asked "How much are you bothered by these symptoms?" to assess bother from AI by VAS. Statistical analyses were performed using Spearman's correlation and Mann-Whitney U test.

RESULTS

Eighty-four (16.3 %) women reported AI with a mean SMIS of 11 (SD ± 5.11, range 2-24) and median bother of 5 (VAS 1-10). There was a fair correlation between VAS for the bother from AI and SMIS (Spearman's r = 0.523, p < 0.001). Fecal urgency, impact on lifestyle, and use of pad/plug were significantly associated with VAS (p = 0.05, p = 0.002 and p < 0.001, respectively).

CONCLUSIONS

There is a fair, positive correlation between VAS for bother from AI and SMIS. Patients' bother from AI is strongly associated with its impact on lifestyle as quantified by individual SMIS components.

Faecal incontinence in men referred for specialty care: a cross-sectional study

AIM

Little is known about men with faecal incontinence. We compared clinical findings and quality of life in a large cohort of men and women with faecal incontinence to guide its evaluation and treatment in men.

METHOD

We analysed men and women presenting to a tertiary referral centre with faecal incontinence between 2005 and 2013. Demographics, physical examination, anorectal physiology testing, symptom severity (Fecal Incontinence Severity Index) and quality of life (Fecal Incontinence Quality of Life Scale) were recorded. We determined differences between men and women and analysed the association between gender and quality of life.

RESULTS

Data were obtained from 144 men and 897 women. Men with faecal incontinence were slightly younger than women (55.3 vs 57.6 years, P = 0.001), more likely to report coexisting constipation (P = 0.004) and more likely to have normal internal and external sphincter function on physical examination (both P < 0.001). Anorectal physiology testing revealed fewer sphincter defects (P < 0.05) and less pudendal neuropathy (P < 0.05) in men compared with women. Although symptom severity and overall quality of life were similar, men had improved coping and less embarrassment compared with women after we adjusted for important clinical factors.

CONCLUSION

Men with faecal incontinence presenting to a tertiary referral centre are more likely than women to have a mixed presentation characterized by constipation and less sphincter dysfunction. They exhibited better coping and less embarrassment than women. These findings should be taken into consideration when evaluating and treating men with faecal incontinence.

Use of hollow microneedles for targeted delivery of phenylephrine to treat fecal incontinence

A hollow microneedle (HM) was prepared to deliver a phenylephrine (PE) solution into the anal sphincter muscle as a method for treating fecal incontinence. The goal of this study was the local targeted delivery of PE into the sphincter muscle through the perianal skin with minimal pain using hollow microneedles, resulting in the increase of resting anal sphincter pressure. PE was administered on the left and the right sides of the anus of a rat through the perianal skin using 1.5mm long HM. An in vivo imaging system study was conducted after injection of Rhodamine B, and a histological study was performed after injection of gentian violet. The resting anal sphincter pressure in response to various drug doses was measured by using an air-charged catheter. Anal pressure change produced by HM administration was compared with change produced by intravenous injection (IV), subcutaneous (SC) injection and intramuscular (IM) injection. The change in mean blood pressure produced by HM administration as a function of PE dose was compared with change produced by PBS injection. A pharmacokinetic study of the new HM administration method was performed. A model drug solution was localized in the muscle layer under the perianal skin at the injection site and then diffused out over time. HM administration of PE induced significant contraction of internal anal sphincter pressure over 12h after injection, and the maximum anal pressure was obtained between 5 and 6h. Compared to IV, SC and IM treatments, HM treatment produced greater anal pressure. There was no increase in blood pressure after HM administration of PE within the range of predetermined concentration. Administration of 800μg/kg of PE using HM produced 0.81±0.38h of tmax. Our study suggests that HM administration enables local delivery of a therapeutic dose of PE to the anal sphincter muscle layer with less pain. This new treatment has great potential as a clinical application because of the ease of the procedure, minimal pain, and dose-dependent response.