Verapamil is described as treating which arrhythmias in the material?

Verapamil is described as treating which arrhythmias in the material?

• A. Supraventricular tachyarrhythmias
• B. Atrial Fibrillation
• C. Paroxysmal Tachycardia
• D. All of the above

Answer: (D)

Verapamil blocks L-type calcium channels with a strong effect on the AV node, where conduction relies on calcium influx. By slowing AV nodal conduction and increasing its refractory period, it reduces the ventricular response to rapid atrial rhythms and can interrupt reentrant circuits that pass through the AV node. This makes it effective for various supraventricular tachyarrhythmias, including those associated with atrial fibrillation when the goal is rate control, as well as paroxysmal tachycardias that involve AV nodal conduction. Therefore, it’s described as treating all of the above.

Verapamil blocks L-type calcium channels with a strong effect on the AV node, where conduction relies on calcium influx. By slowing AV nodal conduction and increasing its refractory period, it reduces the ventricular response to rapid atrial rhythms and can interrupt reentrant circuits that pass through the AV node. This makes it effective for various supraventricular tachyarrhythmias, including those associated with atrial fibrillation when the goal is rate control, as well as paroxysmal tachycardias that involve AV nodal conduction. Therefore, it’s described as treating all of the above.