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Anal Incontinence and Functional Anorectal Disorders

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The definition of fecal incontinence excludes which of the following?

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a. Incontinence to flatus

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b. Incontinence to liquid

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c. Incontinence to solid stool

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d. None of the above

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

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a. Anal incontinence prevalence decreases with age.

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

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

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

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Which of the following are required for normal defecation?

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a. Normal anorectal sensation

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b. Competent anal sphincter complex

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c. Adequate rectal capacity and compliance

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d. All of the above

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

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a. Puborectalis muscle

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b. Pubococcygeus muscle

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c. External anal sphincter

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d. Internal anal sphincter

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

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a. It consists of striated muscle.

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b. It allows for voluntary increases in squeeze pressure.

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

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

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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?

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

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