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Question:

Which medication is the drug of choice for a cardiac arrhythmia?

A Digoxin
Explaination

Lanoxin (digoxin) is the drug of choice for cardiac arrhythmias, furosemide and triamterene are both diuretics used in cardiovascular disease, and lisinopril is indicated for a variety of cardio- vascular diseases but not for arrhythmias.