Amiodarone is used to treat which type of dysrhythmias?

Amiodarone is used to treat which type of dysrhythmias?

• A. Atrial fibrillation
• B. Sinus tachycardia
• C. Life-threatening ventricular dysrhythmias
• D. Bradycardia

Answer: (C)

Amiodarone is a broad-spectrum antiarrhythmic that is especially effective for dangerous ventricular rhythms. It works by blocking potassium channels to prolong repolarization and the refractory period, while also providing sodium and calcium channel blockade and beta-adrenergic effects. This combination suppresses ventricular ectopy and helps prevent and terminate ventricular tachycardia and ventricular fibrillation, even in patients with structural heart disease, and it can be given intravenously for rapid control in emergencies. While it can be used for some atrial arrhythmias such as atrial fibrillation, its primary appeal in acute care is for life-threatening ventricular dysrhythmias. It does not address sinus tachycardia or bradycardia as primary indications, since those conditions are managed differently.

Amiodarone is a broad-spectrum antiarrhythmic that is especially effective for dangerous ventricular rhythms. It works by blocking potassium channels to prolong repolarization and the refractory period, while also providing sodium and calcium channel blockade and beta-adrenergic effects. This combination suppresses ventricular ectopy and helps prevent and terminate ventricular tachycardia and ventricular fibrillation, even in patients with structural heart disease, and it can be given intravenously for rapid control in emergencies. While it can be used for some atrial arrhythmias such as atrial fibrillation, its primary appeal in acute care is for life-threatening ventricular dysrhythmias. It does not address sinus tachycardia or bradycardia as primary indications, since those conditions are managed differently.