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Medicine

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Cardiology

Question
26 out of 30
 

Which of the following is a complication of prosthetic valve?



A Systemic embolism
B Infective endocarditis

C Hemolysis
D All of the above

Ans. D

All of the above

Pulmonary Regurgitation

It is caused by any cause of pulmonary hypertension A decrescendo murmur is heard in early diastole at the left sternal edge (the Graham Steell murmur).

Cardiac surgery

1. Valvuloplasty can be used in mitral or pulmonary stenosis (pliable, non-calcified valve, no regurgitation).

2. A balloon catheter is inserted across the valve and inflated.

3. Valvotomy Closed valvotomy is rarely performed now.

4. Open valvotomy is performed under cardiopulmonary bypass through a median sternotomy.

5. Valve replacements Mechanical valves may be of the ball-cage (Starr-Edwards Q), tilting disc (Björk-Shiley Q), or double tilting disc (St Jude) typeQ.

6. These valves are very durable but the risk of thromboembolism is high; patients require lifelong anticoagulation.

7. Xenografts are made from porcine valves or pericardium. These valves are less durable and may require replacement at 8-10yrs. Anticoagulations not required unless there is Af.

8. Homografts are cadaveric valves. They are particularly useful in young patients and in the replacement of infected valves.

Complications of prosthetic valves:

1. Systemic embolism(in metallic valve)

2. Infective endocarditis

3. Hemolysis

4. Structural valve failure

5. Arrhythmias.


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