In which class of the Vaughn-Williams classification system of anti-dysrhythmic medications does propranolol belong?
A) IA
B) IB
C) IC
D) II

Question

Quizplus · Accepted Answer

Propranolol belongs to class II in the Vaughn-Williams classification system. Class II drugs are beta blockers, which work by blocking beta receptors in the heart and reducing sympathetic nervous system activity. This leads to a decrease in heart rate and contractility, making them effective in treating tachyarrhythmias and reducing the risk of sudden cardiac death.

In Which Class of the Vaughn-Williams Classification System of Anti-Dysrhythmic