Which one of the following statements regarding prosthetic heart valves is correct? A. Antibiotic prophylaxis is still recommended for patients with mechanical valves who have dental procedures B. The majority of mechanical valves are of the ball-and-cage type C. Bioprosthetic valves are now usually obtained from human cadavers D. The target INR for patients with mechanical aortic valves is 3.0-4.0 E. Mechanical valves have a lower failure rate than bioprosthetic valves
Posted on: Wed, 30 Apr 2014 13:27:19 +0000
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