MRCP UK EXAMINATIONS

CARDIOLOGY

PROSTHETIC HEART VALVES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ is developed from a human aortic valve or dura mater and appears very similar to a native valve
A
autograft
B
heterograft
C
homograft
D
TAVR
Explanation: 

Detailed explanation-1: -Aortic homograft root replacement is a type of heart surgery in which the root of the aorta is removed and replaced with a human tissue graft from a donated heart. The aortic root is the portion of the aorta containing the aortic valve, connecting the aorta to the left ventricle of the heart.

Detailed explanation-2: -Homograft valve and pulmonary autograft valve are two commonly used bioprosthetic grafts for aortic valve replacement. Main indications for aortic valve replacement are symptomatic aortic stenosis or regurgitation.

Detailed explanation-3: -An autograft valve is one translocated from one position to another-for example, when the patient’s own pulmonary valve is used to replace a diseased aortic valve. A homograft (or allograft) valve is one transplanted from a human donor.

Detailed explanation-4: -Homograft valves are donated human aortic valves that are used in select cases. These valves may result in less risk of infection, but the operation is more complex than standard valve replacement.

There is 1 question to complete.