Faecal incontinence in adults

Posterior tibial nerve stimulation for faecal incontinence

Faecal incontinence is a common multifactorial condition with a range of invasive treatment options, all of which may be associated with significant complications. Posterior tibial stimulation by continence nurses is an established treatment for urinary incontinence; however, its use in faecal incontinence, while rapidly evolving, is limited to eight small and differing studies. In this article, the background of current management options for faecal incontinence is discussed, as are the physiology and evidence underlying neuromodulation. The evidence base for posterior tibial nerve stimulation in faecal incontinence is reviewed, as well as the implications for practice and further research. While this early evidence base is encouraging, it has yet to be established whether this novel approach may be the minimally invasive, effective and cheap treatment hoped for, for this common and debilitating condition.

Peripheral neuromodulation via posterior tibial nerve stimulation - a potential treatment for faecal incontinence?

INTRODUCTION

Faecal incontinence is a prevalent and important condition, with a range of treatment options. Neuromodulation via sacral nerve stimulators is efficacious, but expensive and associated with complications due to device implantation. Peripheral neuromodulation via posterior tibial nerve stimulation (PTNS) has been assessed in urinary incontinence, but there is minimal evidence for its use in faecal incontinence and no literature from the UK. This retrospective review aimed to assess the efficacy of PTNS in faecal incontinence.

PATIENTS AND METHODS

Thirteen consecutive female patients with faecal incontinence of various causes (9 idiopathic, 3 obstetric, 1 surgery) underwent PTNS at a UK hospital. All were investigated with colonic imaging, anorectal physiology and endo-anal ultrasound. Prior treatments included physiotherapy (13), sphincteroplasty (3) biofeedback (3) and PTQ implants (1). PTNS was performed for 30 min, weekly for 12 weeks.

RESULTS

Median monthly episodes of incontinence of wind, liquid and solid reduced from 6, 10 and 18 respectively to 0 with 12 weeks' treatment (P < 0.05). Significant improvements in quality of life indices were also seen. At 1-month follow up, a sustained reduction in incontinence of wind was seen (0 episodes), with non-significant reductions of liquid and solid stool.

CONCLUSIONS

PTNS is a potentially efficacious, technically simple and minimally invasive alternative treatment modality for faecal incontinence. These early results are encouraging, but we await medium- and long-term follow-up, and a larger randomised trial comparing PTNS with alternative treatments and placebo.

Factors impacting quality of life in women with fecal incontinence

PURPOSE

The aim of this study was to characterize differences in health-related quality of life among women presenting for treatment of fecal incontinence.

METHODS

Among 155 women presenting for treatment of fecal incontinence in a specialty clinic, validated questionnaires measured impact on quality of life (Modified Manchester Health Questionnaire) and severity (the Fecal Incontinence Severity Index). Bowel symptoms, including frequency, urgency, and stool consistency, were ascertained. Comorbid diseases were self-reported. Linear regression models were constructed from significant univariate variables to examine differences observed in quality of life scores.

RESULTS

The average age was 58.7 +/- 11.5 years, with no differences found in quality of life scores according to race, body mass index, or number of vaginal deliveries (P > .05). Younger age, increased urinary incontinence symptoms, prior cholecystectomy, prior hysterectomy, and severity of bowel symptoms correlated with a negative impact on quality of life in univariate analysis (P < .05). Average severity scores were 30.5 +/- 13.7, with moderate correlation seen with increasing severity and quality of life scores (R2 = 0.60). After controlling for severity, women had increased quality of life scores with more bowel urgency (15 points; 95% CI, 8.1-21.2), harder stool consistency (10 points; 95% CI, 3.8-16.3), and prior hysterectomy (9 points; 95% CI, 2.7-15.4).

CONCLUSION

Bowel symptoms and having undergone a hysterectomy had the greatest negative impact on quality of life in women seeking treatment for fecal incontinence. Targeting individualized treatments to improve bowel symptoms may improve quality of life for women with fecal incontinence.

Prevalence of faecal incontinence in adults aged 30 years or more in general population

OBJECTIVE

The aim of this study was to estimate the prevalence of and factors associated with faecal incontinence in a Finnish population.

METHOD

A population-based age-stratified random sample of 8000 people aged 30-81 years from a large city was obtained from the national population registry. A postal questionnaire was sent to all subjects. Questions regarding faecal incontinence were adopted from a previously developed validated questionnaire.

RESULTS

Response rate was 39.8%. Overall, the prevalence of faecal incontinence occurring in any frequency within the last year was 10.6% (CI: 9.5-11.6%). Women suffered significantly more often than men (11.9% vs. 8.7%). The prevalence of faecal incontinence occurring at least twice a month was 5.2% (CI: 4.5-6%). Of these subjects, 62.3% used a pad at least twice a month to protect their underwear (91 women, 10 men), 23.6% used it daily. There was a strong correlation between faecal incontinence and urinary incontinence. Of the 162 subjects reporting faecal incontinence at least twice a month, only 27.2% had discussed the problem with their physician. In 12.4%, their physician had raised the question of faecal incontinence. Only 10% had received treatment for it, but 66% (107/162) felt they needed treatment.

CONCLUSION

Faecal incontinence is a common problem. Only a minority had reported this symptom to their physician and surprisingly few had received treatment for it. General awareness of faecal incontinence and treatment options should be improved among primary care physicians and general population.

Effective management of acute faecal incontinence in hospital: review of continence management systems

This paper reviews the scientific literature regarding current systems available for the management of acute faecal incontinence (FI) in hospital patients. The review searched Medline from 1950 to October 2009 using the adapted search strategy, as devised by the Cochrane Incontinence Group, in order to identify studies relevant to this review, yielding 197 records. Ten studies fitted the inclusion criteria with none of the studies being randomised control trials. Characteristics identified from the studies included: duration of the management devices, cost implications, length of patient stay, contraindications and patient assessment. The management of acute FI in acute settings is a relatively ignored problem, with little available evidence to support a standardised approach to its management. The review highlights the need for early identification of contraindications when FI management systems are being used, particularly in patients administered antithrombotic drugs such as aspirin.

[Current indications, surgical technique and results of anterior sphincter repair as a treatment of faecal incontinence]

Faecal incontinence is a high prevalence disease in the general population. This pathology is commonly under-estimated and causes a great impact on clinical status and on the quality of life of affected patients. The prevalence of faecal incontinence in several studies has been estimated between 2% and 15% of the general population. The prevalence increases if we study selected populations, such as elderly people. The main cause of faecal incontinence is obstetric anal sphincter damage. In the past years, the presence of incontinence due to sphincter lesions, especially the obstetric ones, was an absolute indication of anterior anal sphincter repair. Actually, after knowing the long term follow up results of this technique, as well as the evolving knowledge on faecal incontinence and the development of new diagnostic and therapeutic techniques, this technique might be selected for cases with large sphincter defects. However there is limited information in the current literature on indications, surgical technique and results of anterior sphincter repair. The aim of this review is to analyse scientific evidence on current indications, surgical technique features and results of anterior sphincter repair as a therapy for faecal incontinence, also giving our point of view on controversial issues. A bibliography search was undertaken using Medline database including articles published from January 1985 to January 2009.

Anal physiology testing in fecal incontinence: is it of any value?

INTRODUCTION

The prognostic value of postoperative manometry in fecal incontinence is still controversial. The aims of this study were to establish if Fecal Incontinence Severity Index (FISI) and Fecal Incontinence Quality of Life Scale (FIQL) scores correlate with anal manometry and endoanal ultrasound findings and to define if there is any prognostic value in performing anal manometry after patients are surgically treated for fecal incontinence.

METHODS

Fifty-three patients, all women, were identified. All patients underwent a surgical procedure and were analyzed pre- and postoperatively. Fecal incontinence was assessed using the FISI and FIQL. Patients who did not have these score were excluded. Manometry and ultrasound findings before treatment and manometry findings after treatment were compared with surgical patient's incontinence scores. Anal canal length was noted, and its association with the pre- and postoperative manometry finding and incontinence scores were compared.

RESULTS

No correlation of pre- and postoperative resting and squeeze pressures with incontinence scores was found. Ultrasound findings had no correlation with manometry results and incontinence scores. Anal canal length correlated with both pre- and postoperative manometry findings but not with incontinence scores.

CONCLUSION

Preoperative anal manometry and endoanal ultrasound help in guiding treatment options in patients with fecal incontinence. A decrease in FISI and increase in FIQL scores after a sphincter repair quantifies improvement after incontinence surgery, while changes in anal manometry pressures readings do not.

Long-Term Results after Anterior Sphincteroplasty for Anal Incontinence

Objective:

To assess the long term incontinence and quality of life (Qol) results after elective anterior sphincteroplasty for anal incontinence.

Materials and Methods:

Short and long term follow-up included respectively 28 and 25 of the 29 patients who were operated between 1989 and 1998 in our institution. Qol was assessed with gastro intestinal quality of life index (GIQLI). Incontinence was graded according to Parks score supplied with St Mark's score at long term follow-up.

Results:

21 (73%) patients had a history of obstetric sphincter tears. Mean age at operation was 45 years (range 6–77). Median time from operation to short term follow-up was 26 months (mean 38 months, range 2–113) and 84 months (mean 105, range 74–185) to long term follow-up. At short term follow-up 19 of 28 patients (68%) were continent for stool compared with nine of 25 patients (36%) at long term follow-up. Nine of 17 (53%) who were continent for stool at short term follow-up remained continent for stool at long term follow-up. Patients with a history of obstetric sphincter tear had less severe incontinence at long term follow-up compared to women with other causes of incontinence (St. Mark's score 8 and 16 respectively, p = 0,015). Patients with no incontinence or gas incontinence only, had higher quality of life score at both follow-ups than those who where incontinent for stool (p = 0,007 and p = 0,014 respectively).

Conclusion:

More than half of the patients remained continent for stool at long term follow-up. Continence for stool was associated with high Qol score.

The effects of biofeedback training of pelvic floor muscles on fecal incontinence

OBJECTIVE

The purpose of this study is to discuss the effect of pelvic floor muscle training on fecal incontinence.

METHODS

A retrospective study was performed on patients who received pelvic floor muscle training from March 2002 to April 2007. There were 55 patients with fecal incontinence (male, 32 cases; female, 23 cases; mean age, 9.4 years old from 6 to 14), including 39 cases of anorectal malformation and 16 cases of Hirschsprung's disease. Pelvic floor muscle training was performed using biofeedback for 2 weeks in hospital, 2 times each day, and 30 minutes each time. The patients were then instructed to carry out self-training at home without the biofeedback device daily and received training evaluations in the hospital outpatient department monthly. All patients completed the training regimen and were followed up for 1 year. Anal manometry and clinical score were evaluated before and after training.

RESULTS

Anal continence of 30 patients had satisfactory improvement, but not for the other 25 cases after training. The mean anal squeeze pressures of the group that had good results and the group that had poor results were 98.4 +/- 7.3 and 47.4 +/- 13.6 mm Hg, respectively, before training. There were 31 patients whose anal squeeze pressures were above 80 mm Hg, and 26 of these had satisfactory anal continence improvement, including all patients with Hirschsprung's disease. On the contrary, only 4 of 24 cases whose anal squeeze pressure was below 80 mm Hg acquired satisfactory anal continence improvement.

CONCLUSIONS

Pelvic floor muscle training could achieve good results in some patients with fecal incontinence. Baseline measurements during anorectal manometry appear to provide good prediction of prognosis and effective management.

Function and dysfunction of the colon and anorectum in adults: working team report of the Swedish Motility Group (SMoG)

Symptoms of fecal incontinence and constipation are common in the general population. These can, however, be unreliably reported and are poorly discriminatory for underlying pathophysiology. Furthermore, both symptoms may coexist. In the elderly, fecal impaction always must be excluded. For patients with constipation, colon transit studies, anorectal manometry and defecography may help to identify patients with slow-transit constipation and/or pelvic floor dysfunction. The best documented medical treatments for constipation are the macrogols, lactulose and isphagula. Evolving drugs include lubiprostone, which enhances colonic secretion by activating chloride channels. Surgery is restricted for a highly selected group of patients with severe slow-transit constipation and for those with large rectoceles that demonstrably cause rectal evacuatory impairment. For patients with fecal incontinence that does not resolve on antidiarrheal treatment, functional and structural evaluation with anorectal manometry and endoanal ultrasound or magnetic resonance (MR) of the anal canal may help to guide management. Sacral nerve stimulation is a rapidly evolving alternative when other treatments such as biofeedback and direct sphincter repair have failed. Advances in understanding the pathophysiology as a guide to treatment of patients with constipation and fecal incontinence is a continuing important goal for translational research. The content of this article is a summary of presentations given by the authors at the Fourth Meeting of the Swedish Motility Group, held in Gothenburg in April 2007.

Long-term results of artificial bowel sphincter for the treatment of severe faecal incontinence. Are they what we hoped for?

OBJECTIVE

This study evaluates the long-term morbidity, functional results and quality of life (QOL) after treatment of severe faecal incontinence (FI) with the Acticon Neosphincter (American Medical Systems, Minneapolis, Minnesota, USA).

METHOD

Between 1996 and 2002, 17 consecutive patients (14 female, 3 male; median age 46) underwent sphincter implantation. Clinical evaluation, incontinence severity and QOL were assessed. Anorectal manometry, endoanal ultrasound and pudendal nerve latency were performed preoperatively and at several stages of follow-up. The study was completed in December 2007.

RESULTS

Mean follow-up was 68 months (range: 3-133). Morbidity occurred in 100% of patients from which 65% required at least one re-operation. After the first implant, 11 devices had to be removed (65%). Seven patients had a new implant. At the final stage, Acticon was activated in 9 cases (53%). Severity of FI improved from a median of 17.5 preoperatively to 9 (P = 0.005), 5.5 (P = 0.005) and 10 (P = 0.092) at 6, 12 months and at the end of follow-up, respectively. There was a significant improvement in QOL in all postoperative controls (P < 0.05). Severity of FI did not show a correlation with QOL in the preoperative period, but did at 6, 12 months and at the end of follow-up. Mean maximum resting pressure significantly increased with the full anal cuff.

CONCLUSION

There is a high rate of morbidity, surgical re-interventions and explants after Acticon implant. Patients should be clearly informed about this before surgery. However, patients who have not had Acticon Neosphincter explanted, experience a significant improvement in anal continence and QOL.

[Endoanal ultrasound findings in patients with faecal incontinence using a scoring system]

INTRODUCTION

The main aim of the study was to apply a severity classification of sphincter lesions detected by endoanal ultrasound using Starck score in patients who suffered faecal incontinence.

MATERIAL AND METHOD

Data were analysed on 133 patients with faecal incontinence. Those in whom anal sphincter lesions were detected by endoanal ultrasound are described and their corresponding scores according to Starck classification calculated. This system scores severity of detected sphincter lesions from 0 to 16, involving the three axes of the anal canal. Patient demographic characteristics and anorectal manometry results were also analysed. The relationship between this score, patient gender and age, and anorectal manometric results were also analysed.

RESULTS

A total of 83 (62.4%) patients had some type of anal sphincter lesion. The presence of sphincter defects was not related to gender (P=0.172), although it did correlate with younger ages (P=0.028). The severity of anal sphincter damage by Starck score did not show significant correlation to gender (P=0.327) or to the age (P=0.350) of patients. However, a significant correlation was detected between Starck score and anal resting pressure (P=0.008) or anorectal squeeze pressure (P=0.011).

CONCLUSIONS

The presence of anal sphincter injuries could be well defined by Starck score in patients with faecal incontinence. Severity of damage scored by Starck correlated with anorectal manometric results.

Natural progression of anal incontinence after childbirth

INTRODUCTION AND HYPOTHESIS

The aim of work is to study the natural progression of anal incontinence (AI) in women 10 years after their first delivery and to identify risk factors associated with persistent AI.

METHODS

A prospective cohort study of 304 primiparous women with singleton, cephalic delivery giving vaginal childbirth in 1995. Questionnaires distributed and collected at delivery, 9 months, 5 years and 10 years after, assessing anorectal symptoms, subsequent treatment, and obstetrical events.

RESULTS

Women, 246 of 304, answered all questionnaires (81%). Thirty-five of 246 (14%) had a sphincter tear at the first delivery. One hundred ninety-six of 246 (80%) women had additional vaginal deliveries and no caesarean sections. The prevalence of AI at 10 years after the first delivery was 57% in women with a sphincter tear and 28% in women, a nonsignificant increase compared to the 5-year follow-up. Women who sustained a sphincter tear at the first delivery had an increased risk of severe AI (RR 3.9, 95% CI 1.3-11.8). Neither age, nor subsequent deliveries added to the risk. Severe AI at baseline and 5 years after delivery were independently strong predictors of severe AI at 10 years (RR 12.6, CI 3.3-48.3, and RR 8.3, CI 3.9-17.8, respectively).

CONCLUSION

Persistent anal incontinence 10 years after the first parturition is frequent and sometimes severe, especially if vaginal delivery was complicated by an anal sphincter disruption.

Fecal incontinence in obese women with urinary incontinence: prevalence and role of dietary fiber intake

OBJECTIVE

This study estimates the prevalence of fecal incontinence (FI) in overweight and obese women with urinary incontinence and compares dietary intake in women with and without FI.

STUDY DESIGN

A total of 336 incontinent and overweight women in the Program to Reduce Incontinence by Diet and Exercise clinical trial were included. FI was defined as monthly or greater loss of mucus, liquid, or solid stool. Dietary intake was quantified using the Block Food Frequency Questionnaire.

RESULTS

Women had a mean (+/- SD) age of 53 +/- 10 years, body mass index of 36 +/- 6 kg/m(2), and 19% were African American. Prevalence of FI was 16% (n = 55). In multivariable analyses, FI was independently associated with low fiber intake, higher depressive symptoms, and increased urinary tract symptoms (all P < .05).

CONCLUSION

Overweight and obese women report a high prevalence of monthly FI associated with low dietary fiber intake. Increasing dietary fiber may be a treatment for FI.

Surgery and sacral nerve stimulation for constipation and fecal incontinence

Fecal continence is a complex bodily function, which requires the interplay of sensation, rectal capacity, and anal neuromuscular function. Fecal incontinence affects approximately 2% of the population and has a prevalence of 15% in elderly patients. Constipation is one of the most common gastrointestinal disorders. The variety of symptoms and risk factors suggest a multifactorial origin. Before any invasive intervention, the surgeon should have a thorough understanding of the etiology of these conditions. Appropriate medical management can improve symptoms in the majority of patients. Surgery is indicated when all medical possibilities are exhausted. This review discusses the most used surgical procedures emphasizing the latest experiences. Sacral nerve stimulation (SNS) is a promising option for patients with fecal incontinence and constipation. The procedure affords patients improved continence and quality of life. The mechanism of action is still poorly understood. This treatment has been used before in other more invasive surgical procedures or even after their failure to improve patients' symptoms and avoid a definitive stoma. Before any invasive intervention, the surgeon should have a thorough understanding of the etiology of these conditions. Appropriate medical management can improve symptoms in the majority of patients. Surgery is indicated when all medical possibilities are exhausted. This review discusses the most used surgical procedures emphasizing the latest experiences. Sacral nerve stimulation (SNS) is a promising option for patients with fecal incontinence and constipation. The procedure affords patients improved continence and quality of life. The mechanism of action is still poorly understood. This treatment has been used before in other more invasive surgical procedures or even after their failure to improve patients' symptoms and avoid a definitive stoma.

Prevalence and determinants of fecal incontinence in premenopausal women in an Arabian community

OBJECTIVES

The aim of this study was to determine the prevalence, awareness and determinants of fecal incontinence among Qatari women.

METHOD

In the cross-sectional community-based study in primary health-care centers, using a multistage sampling design, a representative sample of randomly selected 776 Qatari women aged from 40 to 48 years were approached from January to August 2007; only 596 women, with a response rate of 76.8%, gave consent and were included in the analysis. Participants completed a questionnaire assessing fecal incontinence in the previous 12 months and health care-seeking behavior for fecal symptoms. Fecal incontinence, determined by self-report, was categorized by frequency. Females reported the level of bother of fecal incontinence and their general quality of life. Potential risk factors were assessed by self-report, interview, physical examination, and record review.

RESULTS

Of the studied Qatari women, 62 (10.4%) were found to have fecal incontinence. There was a significant difference between fecal incontinent and continent groups with regard to menopause (p < 0.0001), surgical repair of genital prolapse (p < 0.0001) and constipation (p < 0.0001). Only 31 incontinent patients (50%) had sought medical advice. Of the fecal incontinent women, 77.4% felt embarrassment in consulting a doctor and 77.4% believed their condition was worth reporting to a doctor. Aging (51.6%) was the major cause of fecal incontinence in women, followed by childbirth (40.3%), then menopause (25.8%) and lastly paralysis (14.5%). Most of the sufferers were troubled by their inability to pray (64.5%). Their relationship with their husband (41.9%) was the significant consequence for fecal incontinent Qatari women (p = 0.02); 37.1% isolated themselves from social activities and going out to shop.

CONCLUSIONS

The study findings revealed that fecal incontinence is a common symptom among women in the community. There was a correlation between fecal incontinence and menopause. Overall, most of the fecal incontinent women reported that fecal incontinence significantly affected quality of life and only half of the studied women had consulted a physician for the symptom.

Causes of Fecal and Urinary Incontinence After Total Mesorectal Excision for Rectal Cancer Based on Cadaveric Surgery: A Study From the Cooperative Clinical Investigators of the Dutch Total Mesorectal Excision Trial

Purpose

Total mesorectal excision (TME) for rectal cancer may result in anorectal and urogenital dysfunction. We aimed to study possible nerve disruption during TME and its consequences for functional outcome. Because the levator ani muscle plays an important role in both urinary and fecal continence, an explanation could be peroperative damage of the nerve supply to the levator ani muscle.

Methods

TME was performed on cadaver pelves. Subsequently, the anatomy of the pelvic floor innervation and its relation to the pelvic autonomic innervation and the mesorectum were studied. Additionally, data from the Dutch TME trial were analyzed to relate anorectal and urinary dysfunction to possible nerve damage during TME procedure.

Results

Cadaver TME surgery demonstrated that, especially in low tumors, the pelvic floor innervation can be damaged. Furthermore, the origin of the levator ani nerve was located in close proximity of the origin of the pelvic splanchnic nerves. Analysis of the TME trial data showed that newly developed urinary and fecal incontinence was present in 33.7% and 38.8% of patients, respectively. Both types of incontinence were significantly associated with each other (P = .027). Low anastomosis was significantly associated with urinary incontinence (P = .049). One third of the patients with newly developed urinary and fecal incontinence also reported difficulty in bladder emptying, for which excessive perioperative blood loss was a significant risk factor.

Conclusion

Perioperative damage to the pelvic floor innervation could contribute to fecal and urinary incontinence after TME, especially in case of a low anastomosis or damage to the pelvic splanchnic nerves.

Manometric, sensorimotor, and neurophysiologic evaluation of anorectal function

With advances in diagnostic technology, it is now accepted that in the field of functional bowel disorders, symptom-based assessment is unsatisfactory as the sole means of directing therapy. A robust taxonomy based on underlying pathophysiology has been suggested, highlighting a crucial role for physiologic testing in clinical practice. A wide number of complementary investigations currently exist for the assessment of anorectal structure and function, some of which have a clinical impact in patients with functional disorders of evacuation and continence by markedly improving diagnostic yield and altering management. The techniques, limitations, measurements, and clinical use of manometric, sensorimotor, and neurophysiologic tests of anorectal function are presented.

[Diagnosis and therapy of stool incontinence]

Incontinence may have different causes. First it is necessary to diagnose any underlying muscular defects. Neurologic lesions and coordinative disturbances should also be excluded. A great variety of methods are available for treatment. In fact conservative therapy alone will very often be successful. In all traumatic lesions of the sphincter muscle, surgical reconstruction is the method of choice if the defect is not too large. In cases of extensive sphincter destruction, an artificial anorectal sphincter implant or dynamic graciloplasty may be options. In all cases with no or only small muscular defects, sacral nerve stimulation should be offered to the patient. Plicating techniques such as pre- or postanal repair have lost their therapeutic attractiveness at present. Therefore in any case of incontinence, the correctly structured stoma still has a place. To date it is not possible to confirm how much new methods such as bulking agents may contribute to the treatment of incontinence.

Anal resting pressures at manometry correlate with the Fecal Incontinence Severity Index and with presence of sphincter defects on ultrasound

INTRODUCTION

We describe the relationship between anorectal manometry, fecal incontinence severity, and findings at endoanal ultrasound.

METHODS

A total of 351 women completed the Fecal Incontinence Severity Index, underwent anorectal manometry, and endoanal ultrasound. Severity index and manometry pressures in 203 women with intact sphincters on ultrasound were compared with pressures in 148 women with sphincter defects. Relationships between resting and squeeze pressures, severity index, and size of sphincter defects were evaluated.

RESULTS

Mean severity index in patients with and without sphincter defect was 35.7 vs. 36.7 (not significant). Worsening index correlated with worsening mean and maximum resting pressure (P < 0.0001). Differences were observed in mean and maximum resting pressure between the patients with and without sphincter defects (26.6 vs. 37.2, P < 0.0001; 39.4 vs. 51.7, P < 0.001). Resting pressures correlated with the sizes of defect (P < 0.0001).

CONCLUSIONS

Patients with and without sphincter defects had similar severity scores, but patients with defects had a significant decrease in resting pressures. Patients with larger sphincter defects had lower severity scores and resting pressures. Until a manometry cutoff can be set to discriminate between absence and presence of defects, both manometry and ultrasound should be offered to patients with history of anal trauma.

Diagnosis and management of obstetric anal sphincter injury

PURPOSE OF REVIEW

The purpose of this review is to outline optimum practice in diagnosis and management of obstetric anal sphincter injury. The review focuses briefly on prevention of the problem before outlining diagnosis of sphincter injury as well as immediate and long-term management of patients who have sustained such injuries.

RECENT FINDINGS

Increasing vigilance is vital in order that sphincter injury is not overlooked; immediate radiological assessment may play a role in diagnosis. Optimum anal sphincter repair should be followed by oral laxative administration to maintain sphincter integrity. Biofeedback physiotherapy and sacral nerve stimulation show great promise in treatment of persistent symptoms. Optimum mode of delivery in future pregnancies is not clearly defined, and decisions should be individualized.

SUMMARY

Because obstetric injury to the anal sphincter mechanism cannot always be prevented, efforts must focus on limiting its occurrence, documenting its severity and providing optimum therapy to women who have sustained it. Management includes routine postnatal review of at-risk women and antenatal assessment in future pregnancies to limit deterioration in continence after future deliveries.

Can the outcome of pelvic-floor rehabilitation in patients with fecal incontinence be predicted?

PURPOSE

Pelvic-floor rehabilitation does not provide the same degree of relief in all fecal incontinent patients. We aimed at studying prospectively the ability of tests to predict the outcome of pelvic-floor rehabilitation in patients with fecal incontinence.

MATERIALS AND METHODS

Two hundred fifty consecutive patients (228 women) underwent medical history and a standardized series of tests, including physical examination, anal manometry, pudendal nerve latency testing, anal sensitivity testing, rectal capacity measurement, defecography, endoanal sonography, and endoanal magnetic resonance imaging. Subsequently, patients were referred for pelvic-floor rehabilitation. Outcome of pelvic-floor rehabilitation was quantified by the Vaizey incontinence score. Linear regression analyses were used to identify candidate predictors and to construct a multivariable prediction model for the posttreatment Vaizey score.

RESULTS

After pelvic-floor rehabilitation, the mean baseline Vaizey score (18, SD+/-3) was reduced with 3.2 points (p<0.001). In addition to the baseline Vaizey score, three elements from medical history were significantly associated with the posttreatment Vaizey score (presence of passive incontinence, thin stool consistency, primary repair of a rupture after vaginal delivery at childbed) (R2, 0.18). The predictive value was significantly but marginally improved by adding the following test results: perineal and/or perianal scar tissue (physical examination), and maximal squeeze pressure (anal manometry; R2, 0.20; p=0.05).

CONCLUSION

Additional tests have a limited role in predicting success of pelvic-floor rehabilitation in patients with fecal incontinence.

Pelvic floor muscle lesions at endoanal MR imaging in female patients with faecal incontinence

To evaluate the frequency and spectrum of lesions of different pelvic floor muscles at endoanal MRI in women with severe faecal incontinence and to study their relation with incontinence severity and manometric findings. In 105 women MRI examinations were evaluated for internal anal sphincter (IAS), external anal sphincter (EAS), puborectal muscle (PM) and levator ani (LA) lesions. The relative contribution of lesions to differences in incontinence severity and manometric findings was studied. IAS (n = 59) and EAS (n = 61) defects were more common than PM (n = 23) and LA (n = 26) defects. PM and LA defects presented mainly with IAS and/or EAS defects (isolated n = 2 and n = 3). EAS atrophy (n = 73) was more common than IAS (n = 19), PM (n = 16) and LA (n = 9) atrophy and presented mainly isolated. PM and LA atrophy presented primarily with EAS atrophy (isolated n = 3 and n = 1). Patients with IAS and EAS lesions had a lower resting and squeeze pressure, respectively; no other associations were found. PM and LA lesions are relatively common in patients with severe faecal incontinence, but the majority of lesions are found in women who also have IAS and/or EAS lesions. Only an association between anal sphincter lesions and manometry was observed.

Faecal incontinence in male patients

OBJECTIVE

Data concerning faecal incontinence (FI) in men are lacking. The aim of this study was to evaluate the historical aetiology and contrast aetiologies in younger and older men suffering from FI.

METHOD

After institutional review board approval, a retrospective chart review was undertaken of all patients with FI seen between 1999 and 2005. The data of male patients was further analysed to assess the impact of age and historical aetiology on FI.

RESULTS

A total of 404 males were included, 203 patients were <70 years of age (group A) and 201 patients were >or=70 years of age (group B). The most common prior diagnosis in group A was perianal sepsis in 23 (11.3%) patients and symptomatic haemorrhoids in 20 (9.9%) patients; in group B it was prostate cancer in 57 (28.4%) patients, symptomatic haemorrhoids in 31 (15.4%) patients and neurological diseases in 18 (9%) patients. The most common prior procedure in group A was restorative proctectomy/proctocolectomy in 32 (15.8%) patients, fistulotomy or haemorrhoidectomy in 21 (10.3%) and 19 (9.4%) patients respectively. In group B, radiation therapy for prostate cancer was utilized in 48 (23.9%) patients and haemorrhoidectomy in 29 (14.4%) patients. Comparing group A and group B relative to diagnosis - perianal sepsis, perineal trauma, congenital disorders, HIV infection and anal cancer were more common in group A, whereas prostate cancer, neurological diseases and colon cancer were significantly more common in group B.

CONCLUSION

Prostate cancer, symptomatic haemorrhoids, perianal sepsis, rectal cancer and a history of restorative rectal resection were common associations with FI in men. The aetiologies for FI in men vary with age.

A systematic review of psychometric evidence and expert opinion regarding the assessment of faecal incontinence in older community-dwelling adults

OBJECTIVES

This review had two objectives: (i) to determine what is required in an assessment of faecal incontinence issues for older community-dwelling adults; and (ii) to determine the psychometric tools most effective for assessment of faecal incontinence in older community-dwelling adults.

INCLUSION CRITERIA

For the review of psychometric tools, studies were included if they were concerned with people living in the community, included a significant proportion of the sample aged 65 years or over, and either examined psychometric properties of assessment tools or assessed sensitivity of assessment tools to non-surgical interventions available in the community setting. For the review of expert opinion, the search was limited to expert opinion provided by an expert in faecal incontinence that related to community-based assessment. Only articles published in English were eligible for inclusion and no limits were placed on publication dates.

SEARCH STRATEGY

An initial search of Medline and CINAHL databases identified terminology frequently used in the literature with regard to assessment of faecal incontinence. An extensive search was then undertaken using all identified key words and index terms. The third step involved a search of reference lists and bibliographies of all relevant articles.

METHODOLOGICAL QUALITY

All identified studies that met the inclusion criteria were assessed for methodological validity in the case of studies considered for inclusion in the psychometric review. Validity of expert text was also assessed prior to it being included in the review.

RESULTS

The final search strategy identified approximately 7000 references. Full-text versions of 144 references were critically appraised for inclusion in the review. Of these, 25 sources were included in the review of expert opinion and 16 in the review of psychometric properties. In the review of expert opinion, 254 conclusions were extracted for synthesis. The 31 thematic categories were organised under five major themes:History-taking, bowel assessment, psychosocial aspects, physical examination and specialist referral. From the sources that survived critical appraisal, 52 conclusions relating to psychometric properties of assessment tools were derived. There was limited, if any, analysis of psychometric properties for the majority of assessment tools. The Wexner and Vaizey symptom severity scales demonstrated acceptable test-retest reliability and convergent validity. The Fecal Incontinence Quality of Life Scale (FIQLS) demonstrated reasonable reliability and good convergent and criterion-related validity. There was, however, some evidence questioning its discriminant validity.

CONCLUSIONS

This systematic review represents an important first stage in developing guidelines for assessment of faecal incontinence in community-dwelling older people. Assessment should be comprehensive in nature. Gaps in expert opinion are evident regarding issues such as assessment of cognitive decline and specialist referral. Continence advisors need to be appropriately trained in using and interpreting results from assessment tools and conducting physical examinations. Although studies in the review of psychometric properties suffer from limitations such as inadequate sample sizes, the Vaizey and Wexner scales would appear to be the tools of choice. The FIQLS is clearly the tool of choice at this stage for measuring faecal incontinence quality of life. Further validation of tests used in faecal incontinence assessments is required.

Evolving therapy for fecal incontinence

BACKGROUND

Fecal incontinence is common and can be socially debilitating. Nonoperative management of fecal incontinence includes dietary modification, antidiarrheal medication, and biofeedback. The traditional surgical approach is sphincteroplasty if there is a defect of the external sphincter. Innovative treatment modalities have included sacral nerve stimulation, injectable implants, dynamic graciloplasty, and artificial bowel sphincter.

DISCUSSION

This review was designed to assess the various surgical options available for fecal incontinence and critically evaluate the evidence behind these procedures. The algorithm in the surgical treatment of fecal incontinence is shifting. Injectable therapy and sacral nerve stimulation are likely to be the mainstay in future treatment of moderate and severe fecal incontinence, respectively. Sphincteroplasty is limited to a small group of patients with isolated defect of the external sphincter. A stoma, although effective, can be avoided in most cases.

Faecal incontinence as presentation of an ependymomas of the spinal cord

Background

Spinal tumours and ependymomas in particular are rare causes of cauda equina syndrome that present with faecal incontinence.

Case presentation

We present a case of a 45 year old gentleman who presents to a colorectal clinic with incontinence. We then present a review of ependymomas with particular reference to the symptoms they cause as well a review of the neurophysiology of faecal continence.

Conclusion

Suspicion for non-colonic causes for faecal incontinence should arise when there is absence of other etiologic factors. Establishment of the diagnosis of spinal tumours is with neurological examination and MRI spine.

The role of endoluminal imaging in clinical outcome of overlapping anterior anal sphincter repair in patients with fecal incontinence

OBJECTIVE

Anterior sphincter repair has become the operation of choice in patients with fecal incontinence who have defects of the external anal sphincter (EAS), but not all patients benefit from surgery. The aim of this study was to investigate whether endoluminal imaging can identify determinants that play a role in the outcome of sphincter repair.

SUBJECTS AND METHODS

Thirty fecal incontinent patients with an EAS defect were included. The severity of incontinence was evaluated pre- and postoperatively using the Vaizey incontinence score. Patients underwent endoanal MRI and endoanal sonography before and after sphincter repair. We evaluated the association between preoperatively assessed EAS measurements with outcome and postoperatively depicted residual defects, atrophy, tissue at overlap, and sphincter overlap with clinical outcome.

RESULTS

After surgery, the mean Vaizey score in 30 patients (97% females; mean age, 50 years) had improved from 18 to 13 (p < 0.001). MRI showed that baseline measurement of preserved EAS thickness correlated with a better outcome (r = 0.42; p = 0.03). Clinical outcome did not differ between patients with and those without a persistent EAS defect (p = 0.54) or EAS atrophy (p = 0.26) depicted on MRI. Patients with a visible overlap and less than 20% fat tissue had a better outcome than patients with nonvisible, fatty overlap (decrease in Vaizey score, 7 vs 2 points, respectively; p = 0.04). Sonography showed that patients with a persistent EAS defect had a worse outcome than those without an EAS defect (17 vs 10 points, respectively; p = 0.003).

CONCLUSION

Endoanal MRI was useful in determining EAS thickness and structure, and endoanal sonography was effective in depicting residual EAS defects.

Anal inspection and digital rectal examination compared to anorectal physiology tests and endoanal ultrasonography in evaluating fecal incontinence

BACKGROUND

Anal inspection and digital rectal examination are routinely performed in fecal incontinent patients but it is not clear to what extent they contribute to the diagnostic work-up. We examined if and how findings of anal inspection and rectal examination are associated with anorectal function tests and endoanal ultrasonography.

METHODS

A cohort of fecal incontinent patients (n=312, 90% females; mean age 59) prospectively underwent anal inspection and rectal examination. Findings were compared with results of anorectal function tests and endoanal ultrasonography.

RESULTS

Absent, decreased and normal resting and squeeze pressures at rectal examination correlated to some extent with mean (+/-SD) manometric findings: mean resting pressure 41.3 (+/-20), 43.8 (+/-20) and 61.6 (+/-23) Hg (p<0.001); incremental squeeze pressure 20.6 (+/-20), 38.4 (+/-31) and 62.4 (+/-34) Hg (p<0.001). External anal sphincter defects at rectal examination were confirmed with endoanal ultrasonography for defects <90 degrees in 36% (37/103); for defects between 90-150 degrees in 61% (20/33); for defects between 150-270 degrees in 100% (6/6). Patients with anal scar tissue at anal inspection had lower incremental squeeze pressures (p=0.04); patients with a gaping anus had lower resting pressures (p=0.013) at anorectal manometry. All other findings were not related to any anorectal function test or endoanal ultrasonography.

CONCLUSIONS

Anal inspection and digital rectal examination can give accurate information about internal and external anal sphincter function but are inaccurate for determining external anal sphincter defects <90 degrees. Therefore, a sufficient diagnostic work-up should comprise at least rectal examination, anal inspection and endoanal ultrasonography.

External anal sphincter defects in patients with fecal incontinence: comparison of endoanal MR imaging and endoanal US

PURPOSE

To prospectively compare in a multicenter study the agreement between endoanal magnetic resonance (MR) imaging and endoanal ultrasonography (US) in depicting external anal sphincter (EAS) defects in patients with fecal incontinence.

MATERIALS AND METHODS

The study was approved by the medical ethics committee of all participating centers. A total of 237 consenting patients (214 women, 23 men; mean age, 58.6 years +/- 13 [standard deviation]) with fecal incontinence were examined from 13 different hospitals by using endoanal MR imaging and endoanal US. Patients with an anterior EAS defect depicted on endoanal MR images and/or endoanal US scans underwent anal sphincter repair. Surgical findings were used as the reference standard in the determination of anterior EAS defects. The Cohen kappa statistic and McNemar test were used to calculate agreement and differences between diagnostic techniques.

RESULTS

Agreement between endoanal MR imaging and endoanal US was fair for the depiction of sphincter defects (kappa = 0.24 [95% confidence interval: 0.12, 0.36]). At surgery, EAS defects were found in 31 (86%) of 36 patients. There was no significant difference between MR imaging and US in the depiction of sphincter defects (P = .23). Sensitivity and positive predictive value were 81% and 89%, respectively, for endoanal MR imaging and 90% and 85%, respectively, for endoanal US.

CONCLUSION

In the selection of patients for anal sphincter repair, both endoanal MR imaging and endoanal US are sensitive tools for preoperative assessment, and both techniques can be used to depict surgically repairable anterior EAS defects.

Anterior anal sphincter repair for fecal incontinence: Good longterm results are possible

BACKGROUND

Anterior anal sphincter repair (ASR) is standard treatment for fecal incontinence resulting from an obstetrically damaged anal sphincter. Longterm results of repair have generally been shown to be poor. This review of single-unit series aimed to determine longterm outcomes of primary ASR for patients with fecal incontinence from obstetrically damaged anal sphincter.

STUDY DESIGN

This study included patients undergoing ASR from 1995 to 1999. We perform standard overlapping ASR, but external and internal sphincters are repaired separately. The internal sphincter is sutured by direct method and only if damaged. Telephone interview was conducted with all patients, after which questionnaires, including SF-36 survey, Fecal Incontinence Quality of Life Scale questions, and Wexner score-type questions, were sent at median followup of 7 years. Demographic data, anorectal physiology, and data on short-term followup (median 12 months) were prospectively collected.

RESULTS

Sixty-four of 72 patients returned questionnaires and the operation was considered a success in 80% of patients at median followup of 84 months. Six patients underwent additional procedures for incontinence and 58 patients were analyzed. Fourteen patients reported complete continence to stool and flatus (20%). Continence had improved from median Wexner score of 14 to 7 (p < 0.001). Ninety-five percent of patients were satisfied with their operation. There was substantial improvement in all aspects of Fecal Incontinence Quality of Life Scale questionnaire and SF-36. None of the anorectal physiology variables were of value in predicting outcomes.

CONCLUSIONS

We have shown that good longterm results can be achieved with anterior anal sphincter repair. The independent muscle repair technique could explain the improved outcomes.

Sphincter incontinence: is regenerative medicine the best alternative to restore urinary or anal sphincter function?

Incontinence is a major public health concern in aging societies. It is caused by age-dependent spontaneous apoptosis of muscle cells in the urinary and fecal sphincters, and is aggravated in women due to birth trauma. Compared to other currently employed invasive surgical management techniques associated with morbidity and recurrence, replacement or regeneration of dysfunctional sphincter through stem cell therapy and tissue engineering techniques hold great promise. This review focuses on the pathophysiological analysis of urinary incontinence and the possible application of muscle-derived-stem cells, satellite cells, chondrocytes and adipose-derived-stem cells in restoring sphincter functions.

Effect of aging on anorectal and pelvic floor functions in females

PURPOSE

In females, fecal incontinence often is attributed to birth trauma; however, symptoms sometimes begin decades after delivery, suggesting that anorectal sensorimotor functions decline with aging.

METHODS

In 61 asymptomatic females (age, 44 +/- 2 years, mean +/- standard error of the mean) without risk factors for anorectal trauma, anal pressures, rectal compliance, and sensation were assessed by manometry, staircase balloon distention, and a visual analog scale during phasic distentions respectively. Anal sphincter appearance and pelvic floor motion also were assessed by static and dynamic magnetic resonance imaging respectively in 38 of 61 females.

RESULTS

Aging was associated with lower anal resting (r = -0.44, P < 0.001) and squeeze pressures (r = -0.32, P = 0.01), reduced rectal compliance (i.e., r for pressure at half-maximum volume vs. age = 0.4, P = 0.001), and lower (P <or = 0.002) visual analog scale scores during phasic distentions at 16 (r = -0.5) and 24 mmHg (r = -0.4). Magnetic resonance imaging revealed normal anal sphincters in 29 females and significant sphincter injury, not associated with aging, in 9 females. The location of the anorectal junction at rest (r = 0.52, P < 0.001), squeeze (r = 0.62, P < 0.001), and Valsalva maneuver (r = 0.35, P = 0.03), but not anorectal motion (e.g., from resting to squeeze) was associated with age.

CONCLUSIONS

In asymptomatic females, aging is associated with reduced anal resting and squeeze pressures, reduced rectal compliance, reduced rectal sensation, and perineal laxity. Together, these changes may predispose to fecal incontinence in elderly females.

MRI in evaluating atrophy of the external anal sphincter in patients with fecal incontinence

OBJECTIVE

External anal sphincter atrophy seen at endoanal MRI may predict poor outcome of surgical anal sphincter repair for an external anal sphincter defect. The purposes of this study were to compare external phased-array MRI to endoanal MRI for depicting external anal sphincter atrophy in patients with fecal incontinence and to evaluate observer reproducibility in detecting external anal sphincter atrophy with these techniques.

SUBJECTS AND METHODS

Thirty patients with fecal incontinence (23 women, seven men; mean age, 58.7 years; age range, 37-78 years) underwent both endoanal and external phased-array MRI. Images were evaluated for external anal sphincter atrophy by three radiologists. Measures of differences and agreement between both MRI techniques and of interobserver and intraobserver agreement of both techniques were calculated.

RESULTS

The MRI techniques did not significantly differ in their ability to depict external anal sphincter atrophy (p = 0.63) with good agreement (kappa = 0.72). Interobserver agreement was moderate (kappa = 0.53-0.56) for endoanal MRI and moderate to good (kappa = 0.55-0.8) for external phased-array MRI. Intraobserver agreement was moderate to very good (kappa = 0.57-0.86) for endoanal MRI and fair to very good (kappa = 0.31-0.86) for external phased-array MRI.

CONCLUSION

External phased-array MRI is comparable to endoanal MRI in depicting external anal sphincter atrophy and, thereby, in selecting patients for anal sphincter repair. Because results among interpreters varied considerably depending on the experience level, both techniques can be recommended in the diagnostic workup of fecal incontinence only if sufficient experience is available.

Functional changes after physiotherapy in fecal incontinence

BACKGROUND

Physiotherapy is a common treatment option in patients with fecal incontinence. Although physiotherapy may result in relief of symptoms, to what extent improvement is associated with changes in anorectal function is still unclear.

AIM

The aim of the present study was to investigate prospectively how anorectal function changes with physiotherapy and whether these changes are related to changes in fecal incontinence score.

METHODS

Consenting consecutive patients (n=266) with fecal incontinence (91% women; mean age, 59 years) underwent anorectal manometry, anal and rectal mucosal sensitivity measurements, and rectal capacity measurement at baseline and after nine sessions of standardized pelvic floor physiotherapy. These findings were compared with changes in Vaizey incontinence score.

RESULTS

On follow-up 3 months after physiotherapy, squeeze pressure (p=0.028), as well as urge sensation threshold (p=0.046) and maximum tolerable volume (p=0.018), had increased significantly. The extent of improvement was not related to age, duration of fecal incontinence, menopause, and endosonography findings. All other anorectal functions did not change. An improvement in the Vaizey score was moderately correlated with an increase in incremental squeeze pressure (r=0.14, p=0.04) and a decrease in anal mucosal sensitivity threshold (r=0.20, p=0.01).

CONCLUSIONS

Physiotherapy improves squeeze pressure, urge sensation, and maximum tolerable volume. However, improved anorectal function does not always result in a decrease in fecal incontinence complaints.

Novel approaches in the treatment of fecal incontinence

The availability of novel techniques to treat end-stage FI gives hope for a better quality of life in patients who were traditionally treated by a permanent stoma. The diversity of causes of FI and the different modes of action of the various treatment modalities mandate a tailored, individualized approach in each case. A meticulous preoperative evaluation process is imperative in the course of the decision-making of which procedure to perform, with full awareness that a stoma still may be the best option for some patients who have end-stage FI.

Electrical stimulation and pelvic floor muscle training with biofeedback in patients with fecal incontinence: a cohort study of 281 patients

PURPOSE

Pelvic floor rehabilitation is an appealing treatment for patients with fecal incontinence but reported results vary. This study was designed to assess the outcome of pelvic floor rehabilitation in a large series of consecutive patients with fecal incontinence caused by different etiologies.

METHODS

A total of 281 patients (252 females) were included. Data about medical history, anal manometry, rectal capacity measurement, and endoanal sonography were collected. Subgroups of patients were defined by anal sphincter complex integrity, and nature and possible underlying causes of fecal incontinence. Subsequently patients were referred for pelvic floor rehabilitation, comprising nine sessions of electric stimulation and pelvic floor muscle training with biofeedback. Pelvic floor rehabilitation outcome was documented with Vaizey score, anal manometry, and rectal capacity measurement findings.

RESULTS

Vaizey score improved from baseline in 143 of 239 patients (60 percent), remained unchanged in 56 patients (23 percent), and deteriorated in 40 patients (17 percent). Mean Vaizey score reduced with 3.2 points (P < 0.001). A Vaizey score reduction of >or= 50 percent was observed in 32 patients (13 percent). Mean squeeze pressure (+5.1 mmHg; P = 0.04) and maximal tolerated volume (+11 ml; P = 0.01) improved from baseline. Resting pressure (P = 0.22), sensory threshold (P = 0.52), and urge sensation (P = 0.06) remained unchanged. Subgroup analyses did not show substantial differences in effects of pelvic floor rehabilitation between subgroups.

CONCLUSIONS

Pelvic floor rehabilitation leads overall to a modest improvement in severity of fecal incontinence, squeeze pressure, and maximal tolerated volume. Only in a few patients, a substantial improvement of the baseline Vaizey score was observed. Further studies are needed to identify patients who most likely will benefit from pelvic floor rehabilitation.

Fecal incontinence in females older than aged 40 years: who is at risk?

PURPOSE

This study was designed to estimate the prevalence of, and identify risk factors associated with, fecal incontinence in racially diverse females older than aged 40 years.

METHODS

The Reproductive Risks for Incontinence Study at Kaiser is a population-based study of 2,109 randomly selected middle-aged and older females (average age, 56 years). Fecal incontinence, determined by self-report, was categorized by frequency. Females reported the level of bother of fecal incontinence and their general quality of life. Potential risk factors were assessed by self-report, interview, physical examination, and record review. Multivariate logistic regression analysis was used to determine the independent association between selected risk factors and the primary outcome of any reported fecal incontinence in the past year.

RESULTS

Fecal incontinence in the past year was reported by 24 percent of females (3.4 percent monthly, 1.9 percent weekly, and 0.2 percent daily). Greater frequency of fecal incontinence was associated with decreased quality of life (Medical Outcome Short Form-36 Mental Component Scale score, P = 0.01), and increased bother (P < 0.001) with 45 percent of females with fecal incontinence in the past year and 100 percent of females with daily fecal incontinence reporting moderate or great bother. In multivariate analysis, the prevalence of fecal incontinence in the past year increased significantly [odds ratio per 5 kg/m2 (95 percent confidence interval)] with obesity [1.2 (1.1-1.3)], chronic obstructive pulmonary disease [1.9 (1.3-2.9)], irritable bowel syndrome [2.4 (1.7-3.4)], urinary incontinence [2.1 (1.7-2.6)], and colectomy [1.9 (1.1-3.1)]. Latina females were less likely to report fecal incontinence than white females [0.6 (0.4-0.9)].

CONCLUSIONS

Fecal incontinence, a common problem for females, is associated with substantial adverse affects on quality of life. Several of the identified risk factors are preventable or modifiable, and may direct future research in fecal incontinence therapy.

Investigation and treatment of faecal incontinence

Faecal incontinence is a debilitating condition affecting people of all ages, and significantly impairs quality of life. Proper clinical assessment followed by conservative medical therapy leads to improvement in more than 50% of cases, including patients with severe symptoms. Patients with advanced incontinence or those resistant to initial treatment should be evaluated by anorectal physiology testing to establish the severity and type of incontinence. Several treatment options with promising results exist. Patients with gross sphincter defects should undergo surgical repair. Those who fail to respond to sphincteroplasty and those with no anatomical defects have the option of either sacral nerve stimulation or other advanced procedures. Stoma formation should be reserved for patients who do not respond to any of the above procedures.

Risk factors for fecal incontinence: a population-based study in women

BACKGROUND

In women with "idiopathic" fecal incontinence (FI), consensus guidelines recommend anal sphincter imaging and surgical repair, when feasible, of anal sphincter defects believed to cause FI. However, the relative contributions of obstetric trauma and bowel symptoms to FI in the community are unknown.

METHODS

To assess risk factors for FI during the past year, a previously validated questionnaire was mailed to an age-stratified random sample of 5,300 women residing in Olmsted County, Minnesota.

RESULTS

Altogether, 2,800 women (53%) responded. The risk of fecal incontinence increased with age (odds ratio [OR] per decade 1.3, 95% CI 1.2-1.4). The risk of fecal incontinence was higher among women with rectal urgency (OR 8.3, 95% CI 4.8-14.3) whether or not they also had other bowel disturbances (i.e., constipation, diarrhea, or abdominal pain) or had a vaginal delivery with forceps or stitches (OR 9.0, 95% CI 5.6-14.4). Among women with FI, rectal urgency and age were also risk factors for symptom severity. In contrast, obstetric risk factors for anorectal trauma did not increase the risk for FI. The risk for FI was not significantly different among women with cesarean section, vaginal delivery with or without forceps or stitches, or anorectal surgery, compared with nulliparous women without any of these risk factors.

CONCLUSIONS

Rectal urgency rather than obstetric injury is the main risk factor for FI in women. These observations reinforce the importance of behavioral, dietary, and pharmacological measures to ameliorate bowel disturbances before anal imaging in women with "idiopathic" FI.