In rate control for atrial fibrillation with rapid ventricular response, which medication class is commonly used?

In rate control for atrial fibrillation with rapid ventricular response, which medication class is commonly used?

• A. Beta-blockers
• B. Calcium channel blockers
• C. Digoxin
• D. Nitrates

Answer: (A)

When managing atrial fibrillation with rapid ventricular response, the goal is to slow the rate at which the ventricles respond by reducing AV node conduction. Beta-blockers accomplish this by blocking sympathetic stimulation, which slows AV nodal conduction and lowers the ventricular rate. This helps restore a more comfortable heart rate, improves diastolic filling, and reduces myocardial oxygen demand. Because of this effect, beta-blockers are commonly used as a first-line rate-control option in stable patients. Calcium channel blockers that slow AV nodal conduction are another effective choice, often used when beta-blockers are contraindicated or not tolerated. Digoxin can help at rest or in patients with heart failure, but it acts more slowly and is less reliable during high adrenergic states. Nitrates don’t affect AV nodal conduction, so they aren’t used for rate control.

When managing atrial fibrillation with rapid ventricular response, the goal is to slow the rate at which the ventricles respond by reducing AV node conduction. Beta-blockers accomplish this by blocking sympathetic stimulation, which slows AV nodal conduction and lowers the ventricular rate. This helps restore a more comfortable heart rate, improves diastolic filling, and reduces myocardial oxygen demand. Because of this effect, beta-blockers are commonly used as a first-line rate-control option in stable patients.

Calcium channel blockers that slow AV nodal conduction are another effective choice, often used when beta-blockers are contraindicated or not tolerated. Digoxin can help at rest or in patients with heart failure, but it acts more slowly and is less reliable during high adrenergic states. Nitrates don’t affect AV nodal conduction, so they aren’t used for rate control.