1. Which of the following is true of atrial fibrillation?

A. Causes the presystolic accentuation of the mitral stenosis murmur to disappear

B. Requires the use of coumadin instead of dabigatran or rivaroxaban for stroke prophylaxis in the setting of severe mitral stenosis

C. Frequently is well tolerated hemodynamically in the setting of severe mitral stenosis

D. A and B are correct

E. All of the above are correct

F. None of the above
 

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