Fecal Incontinence Management

Introduction

Fecal incontinence is defined as the recurrent and uncontrolled passage of liquid or solid stools, significantly affecting the quality of life of patients, and requires careful evaluation to avoid misdiagnosis as IBS, as recommended by the American Gastroenterological Association 1, 2

The American Gastroenterological Association recommends identifying underlying causes of fecal incontinence, including history of cholecystectomy, smoking, obesity, diarrhea, fecal impaction with overflow, anal sphincter weakness, and neurological disorders 1
Diarrheal states are the strongest independent risk factor for fecal incontinence, with an odds ratio of 53, and other independent risk factors include inflammatory bowel disease, major anatomic defects, rectocele, stress urinary incontinence, higher BMI, current smoking, advanced age, disease burden, and decreased physical activity 1
Diabetic patients have a higher risk of fecal incontinence due to peripheral neuropathy (75-100% correlation with bladder/bowel dysfunction) and poor glycemic control affecting gut motility, as reported by the American Gastroenterological Association and the American Diabetes Association 3, 4

Anorectal examination to identify impaction and rectal prolapse is a crucial step in diagnosing fecal incontinence, according to the British Society of Gastroenterology 2
Anorectal manometry can identify anal weakness, sensory issues, and impaired rectal balloon expulsion in patients with fecal incontinence, while anal imaging (ultrasound or MRI) can identify sphincter defects, atrophy, and patulous anal canal 1
A detailed characterization of bowel habits, identification of triggering factors, and evaluation of underlying causes are essential in the evaluation of fecal incontinence 1

The American Gastroenterological Association suggests identifying and eliminating poorly absorbed sugars (sorbitol, fructose) to manage fecal incontinence 1
Dietary modifications, such as increasing fiber intake, can help manage fecal incontinence, as recommended by the American Gastroenterological Association 1

The American Gastroenterological Association recommends loperamide (2mg) as a treatment for diarrhea-associated incontinence, starting with 1 tablet 30 minutes before breakfast, titrate up to 16mg daily 1
The American Gastroenterological Association suggests bile acid sequestrants (cholestyramine, colesevelam) as alternative medications for bile salt malabsorption 1
Alternative agents, such as anticholinergics or clonidine, can be used to manage diarrhea-predominant fecal incontinence, while osmotic laxatives, stimulant laxatives, and polyethylene glycol can be used to manage constipation-associated fecal incontinence 1, 5, 6

The American Gastroenterological Association recommends biofeedback therapy to improve pelvic floor strength and coordination, rectal sensation, and tolerance of rectal distention 1
Teaching proper pelvic floor exercises can be beneficial, as recommended by the American College of Physicians 7
Correct toilet posture, including buttock support, foot support, and comfortable hip abduction, can help with pelvic floor rehabilitation, as recommended by the American Urological Association 8

Conservative measures, such as dietary modifications, pelvic floor strengthening exercises, and biofeedback therapy, should be attempted before considering surgical interventions or medical devices, as recommended by the American Gastroenterological Association 1
Medications, including fiber supplements, loperamide, and bile acid sequestrants, can be used to manage fecal incontinence, along with scheduled defecation, structured bowel training, and rectal cleaning with small enemas or warm water 1, 6
For constipation with overflow incontinence, enemas or digital evacuation may be used in cases of fecal impaction, as recommended by the American Heart Association 9

Sacral nerve stimulation, perianal injection of bulking agents, surgical correction, artificial anal sphincter/dynamic graciloplasty, and colostomy are options for patients who do not respond to conservative therapies, as noted by 1
Improving glycemic control (may require adjustment of insulin regimen) and considering an insulin pump for better control if appropriate can help manage fecal incontinence in diabetic patients, as suggested by the American Gastroenterological Association 3

The prevalence of incontinence in post-stroke patients ranges from 30-40% during hospitalization, decreasing to 7-9% by 6 months, according to the American Stroke Association 9
The strongest risk factor for incontinence at 3 months in post-stroke patients is needing help getting to the toilet, as reported by the American Stroke Association 9

Failing to adequately identify underlying causes, especially diarrhea, can lead to ineffective management of fecal incontinence, while inadequate trial of conservative therapies before considering invasive interventions can lead to unnecessary complications, as warned by 1
Inadequate anorectal testing, such as not performing appropriate tests like manometry and sphincter imaging, can lead to misdiagnosis and ineffective management, while premature progression to invasive treatments can occur when conservative measures have not been thoroughly attempted first 1