All of the following are true for mitral valve prolapse,except –
**Core Concept**
Mitral valve prolapse (MVP) is a condition characterized by the abnormal movement of the mitral valve leaflets into the left atrium during systole. This results from an abnormality in the valve's structure, leading to incomplete closure and potential mitral regurgitation. MVP is often associated with myxomatous degeneration of the valve.
**Why the Correct Answer is Right**
The correct answer is related to the pathophysiology of MVP. In MVP, the mitral valve leaflets are abnormally thickened and redundant, leading to systolic prolapse. This can cause mitral regurgitation due to incomplete valve closure. The condition is often associated with myxomatous degeneration, which involves the accumulation of mucopolysaccharides in the valve tissue. This degeneration can lead to the characteristic leaflet thickening and redundancy seen in MVP.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because MVP is indeed often associated with myxomatous degeneration, which involves the accumulation of mucopolysaccharides in the valve tissue. This degeneration can lead to the characteristic leaflet thickening and redundancy seen in MVP.
**Option B:** This option is incorrect because MVP can indeed be associated with mitral regurgitation, which is a consequence of incomplete valve closure. Mitral regurgitation occurs when blood flows back from the left ventricle into the left atrium during systole.
**Option C:** This option is incorrect because MVP is indeed a common condition, affecting approximately 2-3% of the general population. It is often asymptomatic but can be associated with various symptoms, including palpitations, shortness of breath, and chest pain.
**Option D:** This option is incorrect because MVP is indeed often associated with other valvular abnormalities, such as aortic valve disease. However, the specific association with MVP is not as strong as other options listed.
**Clinical Pearl / High-Yield Fact**
A key clinical feature of MVP is the presence of a characteristic "click" or "whoop" sound, often heard during physical examination. This sound is due to the sudden closure of the mitral valve leaflets as they prolapse into the left atrium.
**Correct Answer:** D.