MRCP UK EXAMINATIONS

CARDIOLOGY

MIXED AORTIC VALVE DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A patient with a history of coronary artery disease is being treated for a myocardial infarction (MI). During treatment, acute mitral valve regurgitation occurs. What is the most likely cause of the acute mitral valve dysfunction?
A
Infective endocarditis
B
Rupture of chordae tendinae
C
Atherosclerosis
D
Increased preload
Explanation: 

Detailed explanation-1: -Mitral regurgitation (MR) is caused by the retrograde flow of blood from the left ventricle (LV) into the left atrium (LA) through the mitral valve (MV), causing a systolic murmur heard best at the apex of the heart with radiation to the left axilla.

Detailed explanation-2: -Mitral valve prolapse: Prolapse is the most common cause of mitral regurgitation, and features extra tissue in the valve that keeps it from closing. Certain inherited genes can increase your risk of developing prolapse.

Detailed explanation-3: -Patients may occasionally present with cardiac arrhythmias-most commonly atrial fibrillation. Other less common symptoms include hemoptysis, thromboembolism and symptoms of infectious endocarditis. Acute mitral regurgitation presents with severe symptoms: syncope, acute pulmonary edema and cardiogenic shock.

Detailed explanation-4: -Typical causes of mitral regurgitation after MI include papillary muscle disorders and rupture of the chordae tendineae. Sudden dysfunction of the mitral valve produces regurgitation and pulmonary edema.

There is 1 question to complete.