MRCP UK EXAMINATIONS

Detailed explanation-1: -(T/F) A bioprosthetic prosthesis is estimated to last 30 years. False. (T/F) Stentless heterografts were developed to improve hemodynamics and durability of the bioprosthetic valve; they are made from a porcine aortic valve or bovine pericardium.

Detailed explanation-2: -This is what we would recommend in young patients. Tissue valves or bioprosthetic valves generally can last anywhere from 10 to 15 years. The younger you are, the less longer they are likely to last. The older you are, the longer they are likely to last.

Detailed explanation-3: -Mechanical heart valves would be expected to last > 20-30 years whereas bioprosthetic heart valves may only last 10-15 years before degenerating. This means that patients with mechanical heart valves are less likely to need a reoperation or repeat valve procedure.

Detailed explanation-4: -Mechanical valves have advantages and disadvantages, the most important of which is their greater durability (20–30 years) than tissue bioprosthetic valves (10–15 years). Their greater durability translates into lower reoperation rates among these patients, compared with patients with bioprosthetic valves.

Detailed explanation-5: -For patients with a surgical bioprosthetic valve, they suggest anticoagulation with VKA for 3–6 months, whereas for transcatheter valve replacement (TAVR), they suggest antiplatelet therapy.