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Acute severe AR – Cardiology MCQ – Answer

Most common cause of acute severe aortic regurgitation:

Correct answer: b) Infective endocarditis

Though acute rheumatic fever can produce aortic regurgitation, usually mitral regurgitation is the dominant lesion in acute rheumatic carditis.

Aortic dissection can cause acute aortic regurgitation if the dissection flap reaches the level of the aortic valve.

Myocardial infarction can cause acute mitral regurgitation if a papillary muscle is severely ischemic or ruptures, but not aortic regurgitation.

Most common cause of chronic aortic regurgitation in the Western world is degenerative disease of bicuspid or trileaflet aortic valve. In developing countries, rheumatic fever is still an important cause for chronic aortic regurgitation.

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MCQs in Medicine - Cardiovascular System is based on undergraduate medical curriculum. Though the questions are aimed at basic post graduate entrance examinations, candidates taking competitive exams at the post graduate exit level may also find them useful, especially the explanations for the answers. Undergraduate medical students will find them useful for answering MCQ tests in their regular exams. More than just answering MCQs, the explanations will improve the knowledge and understanding about the conditions discussed.Medicine MCQs - Cardiovascular System Kindle Edition: Click Here for a Preview Comments and suggestions are most welcome.