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Review Question - QID 100741

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QID 100741 (Type "100741" in App Search)
A new antiarrythmic drug (Drug A) is found to prolong the refractory period of cardiac myocytes by slowing the efflux of potassium in the cardiac action potential as seen in Figure A. Drug A’s effect on the action potential of cardiac myocytes is most similar to which of the following drugs?
  • A
  • A