Which of the following are considered anti-arrhythmia agent drugs?

Beta blockers, calcium channel blockers, and lidocaine are all considered anti-arrhythmia agent drugs due to their specific mechanisms of action that help regulate and restore normal heart rhythm.

Beta blockers work by blocking the effects of adrenaline on the heart, which slows heart rate, reduces the workload on the heart, and helps manage arrhythmias such as atrial fibrillation and ventricular tachycardia.

Calcium channel blockers prevent calcium from entering the cells of the heart and blood vessels, which leads to a decrease in heart contractility and heart rate. This can help control certain types of arrhythmias and also manage conditions like hypertension and angina.

Lidocaine is a local anesthetic that is also used as an anti-arrhythmic, particularly in the acute management of ventricular arrhythmias. It works by stabilizing the cardiac cell membrane and preventing the abnormal electrical impulses that cause these arrhythmias.

In contrast, diuretics, ACE inhibitors, ARBs, statins, and anticoagulants serve different primary roles within cardiovascular pharmacotherapy. Diuretics primarily manage fluid balance and hypertension, ACE inhibitors and ARBs focus on reducing blood pressure and heart workload, while statins lower cholesterol, and anticoagulants prevent blood clots.