Question:
A young asymptomatic female is observed to have a midsystolic click on routine examination. The valves are likely to show:
A young asymptomatic female is observed to have a midsystolic click on routine examination. The valves are likely to show:
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A midsystolic click equals mitral valve prolapse; recall what makes the leaflet floppy.
Updated On: Jun 24, 2026
- Myxomatous degeneration
- Aschoff bodies
- Calcific degeneration
- Ruptured chordae tendineae
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The Correct Option is A
Solution and Explanation
Step 1: A midsystolic click in a young asymptomatic woman is the classic sign of mitral valve prolapse. The concept tested is the underlying valve pathology.
Step 2: The click happens when the redundant prolapsing leaflet snaps taut during systole. A late systolic murmur often follows it.
Step 3: The pathology behind mitral valve prolapse is myxomatous degeneration. The leaflets and chordae accumulate mucopolysaccharide ground substance, weaken, and balloon into the left atrium. So option A is correct.
Step 4: Why the others are wrong. Aschoff bodies are seen in rheumatic carditis, which usually causes mitral stenosis or regurgitation with diastolic or pansystolic murmurs, not an isolated click (option B wrong). Calcific degeneration causes aortic stenosis and an ejection systolic murmur, mainly in the elderly (option C wrong). Ruptured chordae tendineae produces acute severe mitral regurgitation with a loud murmur and pulmonary edema, not an asymptomatic incidental click (option D wrong).
Step 5: The picture fits mitral valve prolapse from myxomatous change.
Answer: A. Myxomatous degeneration.
Step 2: The click happens when the redundant prolapsing leaflet snaps taut during systole. A late systolic murmur often follows it.
Step 3: The pathology behind mitral valve prolapse is myxomatous degeneration. The leaflets and chordae accumulate mucopolysaccharide ground substance, weaken, and balloon into the left atrium. So option A is correct.
Step 4: Why the others are wrong. Aschoff bodies are seen in rheumatic carditis, which usually causes mitral stenosis or regurgitation with diastolic or pansystolic murmurs, not an isolated click (option B wrong). Calcific degeneration causes aortic stenosis and an ejection systolic murmur, mainly in the elderly (option C wrong). Ruptured chordae tendineae produces acute severe mitral regurgitation with a loud murmur and pulmonary edema, not an asymptomatic incidental click (option D wrong).
Step 5: The picture fits mitral valve prolapse from myxomatous change.
Answer: A. Myxomatous degeneration.
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