Study note

Class Ia anti-arrhythmic drugs

THE CONTEXT
Class Ia drugs affect cardiac action potential duration and tissue refractoriness and are used for arrhythmia prevention.

Effects and uses

•
Class Ia drugs prolong cardiac action potential duration and increase the tissue refractory period.
•
They are used to prevent both atrial and ventricular arrhythmias.
Explore this chapter
NEETx
Learn. Practise. Remember.