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NBME 20 Answers

nbme20/Block 2/Question#5

A 32-year-old woman has had fecal incontinence ...

Damage to the anal sphincter

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submitted by ergogenic22(42),

A stretch injury during childbirth will result in damage to the external uretheral and anal sphincters and damage to the pudendal nerve (S2-S4). This can lead to decreased sensation in the perineal and genital area and fecal or urinary incontinence

thepacksurvives  I think that there can also be a direct tear to the anal sphincter muscles +  
sympathetikey  A better answer choice would have been "damage to the nerves innervating the anal sphincter" but eh, ok. +4