Which medication is an antiarrhythmic agent?

Which medication is an antiarrhythmic agent?

• A. Amiodarone
• B. Acetaminophen
• C. Lisinopril
• D. Furosemide

Answer: (A)

Antiarrhythmic agents are drugs that modify electrical conduction in the heart to prevent or correct abnormal rhythms. Amiodarone is an antiarrhythmic medication used to treat rhythm disorders such as atrial fibrillation and ventricular tachycardia. It works mainly by blocking potassium channels in heart cells, which lengthens the action potential and the refractory period, helping to stabilize the heart’s rhythm. It also has effects on sodium and calcium channels and on beta receptors, giving it broad activity against various arrhythmias. The other drugs don’t target heart rhythm: acetaminophen is a pain and fever reducer, lisinopril is an ACE inhibitor for blood pressure and heart failure, and furosemide is a diuretic.

Antiarrhythmic agents are drugs that modify electrical conduction in the heart to prevent or correct abnormal rhythms. Amiodarone is an antiarrhythmic medication used to treat rhythm disorders such as atrial fibrillation and ventricular tachycardia. It works mainly by blocking potassium channels in heart cells, which lengthens the action potential and the refractory period, helping to stabilize the heart’s rhythm. It also has effects on sodium and calcium channels and on beta receptors, giving it broad activity against various arrhythmias. The other drugs don’t target heart rhythm: acetaminophen is a pain and fever reducer, lisinopril is an ACE inhibitor for blood pressure and heart failure, and furosemide is a diuretic.