<prompt> What is the best drug for the following rhythm disorder shown below?EsmololAmiodaroneVernakalantLignocaine  <response>: The video shows Atrial flutter with a 4:1 block with normal hea rate. To stabilize the macro-reentrant circuit, for rhythm control amiodarone is used. Amiodarone acts on multilple channels and pathways:- Na channel blocker K channel blocker Ca channel blocker b-blocker propey 