Fecal impactions occur in which portion of the colon?
a. Ascending
b. Descending
c. Transverse
d. Rectum
ANS: D
A fecal impaction is a collection of hardened feces wedged in the rectum that cannot be expelled. It results from unrelieved constipation. Feces at this point in the colon contain the least amount of moisture. Feces found in the ascending, transverse, and descending colon still consist mostly of liquid and do not form a hardened mass.
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