Adenosine (Adenocard) is an antidysrhythmic agent given primarily to
a. convert supraventricular tachycardias.
b. act as a second-line drug for premature ventricular contractions (PVCs).
c. treat AV blocks.
d. coarsen ventricular fibrillation so that defibrillation is effective.
A
Adenosine occurs endogenously in the body as a building block of adenosine triphosphate (ATP). Given in intravenous boluses, adenosine slows conduction through the atrioventricular (AV) node, causing transient AV block. It is used clinically to convert supraventricular tachycardias and to facilitate the differential diagnosis of rapid dysrhythmias.
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