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NBME 24 Answers

nbme24/Block 1/Question#34

A 62-year-old man comes to the physician for a ...


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submitted by neonem(298),

Sotalol is a type III antiarrhythmic (K+ channel-blocking) that also has beta-blocker activity (Type II antiarrhythmic). This explains the decreased heartrate and blood pressure (beta-1 blocking activity), with the QT prolongation - all type III AADs cause QT prolongation.

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submitted by madojo(24),

-Adenosine decreases AV node conduction used in SVT, and its side effects include flushing, hypotension, chest pain, impending doom. -Flecainide is a Sodium channel blocker Class 1C with strong Na channel blockage and its contraindicated in structural and ischemic heart disease. -Phenytoin is an anti epileptic, associated with teratogenicity, p450 induction, osteopenia