A midsystolic click heard at the mitral area is characteristic of which valve abnormality?

• A. Aortic Stenosis
• B. Tricuspid Regurgitation
• C. Mitral Valve Prolapse
• D. Pulmonary Hypertension

Answer: (D)

A midsystolic click heard over the mitral area points to Mitral Valve Prolapse. This click comes from the sudden tensing and prolapse of the mitral valve leaflets into the left atrium during systole, followed by a brief sound as the valve snaps shut. When mitral regurgitation is present, a late systolic murmur can follow the click, but the defining feature is that click itself located at the apex.

This pattern helps distinguish it from other valve problems. Aortic stenosis shows a harsh systolic ejection murmur best at the right upper sternal border and doesn’t produce a midsystolic click. Tricuspid regurgitation is a holosystolic murmur heard best along the left lower sternal border. Pulmonary hypertension characteristically presents with a loud P2 and signs of right heart strain, not a midsystolic click.