Distal Gastrointestinal Tract Pathology Quiz

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Which of the following best reflects the definition of constipation in clinical practice?

A Passage of hard stools or difficulty passing stools ✓
B Lower abdominal pain that is relieved by opening the bowels
C A feeling of incomplete evacuation after passing flatus
D Opening the bowels less often than once daily
E Abdominal bloating that is worse after meals

The answer is A: Passage of hard stools or difficulty passing stools

Explanation

Why A is correct

See Constipation. Option A is correct because constipation is a symptom, not a disease, and in clinical practice it describes unsatisfactory defaecation: infrequent stools, difficulty passing stools, hard stools or a sense of incomplete emptying. NICE describes it as a symptom-based disorder, and the Rome IV criteria used for diagnosis include bowel movements fewer than three times a week. Frequency is therefore only one part of the picture: some people pass a stool every day but strain to pass hard stools, whereas others pass stools less often without any difficulty. Chronic constipation usually means symptoms for at least three months, and it is more common in women, in older people and during pregnancy. Constipation can have a cause, such as a drug or a medical condition (secondary constipation), or it can be functional, with no known cause.

Nature: Constipation is a symptom, not a disease.
Definition: Unsatisfactory defaecation, with infrequent stools, difficulty passing stools, hard stools or a sense of incomplete emptying.
Frequency: Fewer than three bowel movements a week is only one part of the picture.

Why the other options are incorrect

B. Lower abdominal pain that is relieved by opening the bowels: Lower abdominal pain that is relieved by opening the bowels is a symptom of irritable bowel syndrome and is not part of the definition of constipation. It would be correct for a question about functional abdominal pain.
C. A feeling of incomplete evacuation after passing flatus: A feeling of incomplete evacuation after passing flatus is a gas-related symptom, not the sensation of incomplete stool emptying that forms part of constipation. It does not indicate hard or infrequent stools.
D. Opening the bowels less often than once daily: A bowel frequency of less than once a day is not constipation in itself, because normal bowel habit ranges from three times a day to three times a week. It would be correct only if the interval were unusually long and associated with other symptoms.
E. Abdominal bloating that is worse after meals: Abdominal bloating can accompany constipation but is not part of its definition. It would be correct for a question about functional bowel symptoms after eating.

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