Which medication is often prescribed to control heart rate in patients with atrial fibrillation?

Diltiazem is commonly prescribed to control heart rate in patients with atrial fibrillation due to its effectiveness as a calcium channel blocker. In atrial fibrillation, the heart may beat irregularly and rapidly, which can lead to symptoms like palpitations, shortness of breath, and fatigue. Diltiazem works by slowing down conduction through the atrioventricular (AV) node, thus helping to control the heart rate and improve symptoms.

In addition to directly affecting heart rate, diltiazem also has vasodilatory effects, which can reduce myocardial oxygen demand and improve hemodynamics in patients with underlying cardiac issues. This dual action makes diltiazem a preferred choice in managing rapid ventricular rates associated with atrial fibrillation, particularly in patients who may have hypertension or angina as comorbid conditions.

While other medications listed may also be used for rhythm control or rate control, diltiazem is specifically well-known for its role in heart rate management in atrial fibrillation scenarios.