MRCP UK EXAMINATIONS

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CARDIOLOGY

PROSTHETIC HEART VALVES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The patient presents with a St. Jude bileaflet tilting disc in the mitral position and the MVA has decreased significantly compared to last year’s echo results; what is most likely the diagnosis
A
hemolysis
B
perivalvular leak
C
physiologic stenosis
D
thrombus
Explanation: 

Detailed explanation-1: -The bileaflet design consists of two semicircular leaflets that pivot on hinges. Bileaflet valves have the best central flow-the leaflets open completely, allowing very little resistance to blood flow. These valves correct the problem of central flow and blood cell damage; however, they allow some backflow.

Detailed explanation-2: -St Jude Medical (SJM) valve: Best-known and most implanted mechanical bileaflet valve.

Detailed explanation-3: -STAPHYLOCOCCI. S. aureus is a common cause of bacterial endocarditis in patients with prosthetic valves and in injection drug users. This organism is also the most common cause of acute bacterial endocarditis in patients with previously normal cardiac valves.

Detailed explanation-4: -Infective endocarditis develops most commonly on the mitral valve, closely followed in descending order of frequency by the aortic valve, the combined mitral and aortic valve, the tricuspid valve, and, rarely, the pulmonic valve.

There is 1 question to complete.
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