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Anal Incontinence and Functional Anorectal Disorders

The definition of fecal incontinence excludes which of the following?

a. Incontinence to flatus

b. Incontinence to liquid

c. Incontinence to solid stool

d. None of the above

Which of these statements regarding the epidemiology of anal incontinence in adults is correct?

a. Anal incontinence prevalence decreases with age.

b. Anal incontinence is more common in women than in men.

c. Incontinence to liquid stool is more common than mucus or solid stool.

d. Anal incontinence including flatal incontinence is uncommon, affecting less than 1 percent of community-dwelling adults.

Which of the following are required for normal defecation?

a. Normal anorectal sensation

b. Competent anal sphincter complex

c. Adequate rectal capacity and compliance

d. All of the above

Which muscle contributes most to the anal canal’s resting pressure and fecal continence at rest?

a. Puborectalis muscle

b. Pubococcygeus muscle

c. External anal sphincter

d. Internal anal sphincter

Which of the following statements regarding the external anal sphincter is FALSE?

a. It consists of striated muscle.

b. It allows for voluntary increases in squeeze pressure.

c. It is responsible for approximately 50 percent of anal resting pressure.

d. It is innervated primarily by somatic motor fibers coursing in the inferior rectal branch of the pudendal nerve.

A 32-year-old woman complains of chronic pelvic pain and dyspareunia. She also is diagnosed with paradoxical contraction of the red-shaded muscles during increases in abdominal pressure. What would be the most likely result of this?

Reproduced with permission from Corton MM: Anatomy. In Hoffman BL, Schorge JO, Bradshaw KD, et ...

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