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Class 1a antiarrhythmics

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Class Ia comprises sodium channel blockers that increase the action potential duration.

Examples of class Ia antiarrhthmic drugs include:

  • quinidine
  • procainamide
  • disopyramide

Class Ia drugs are used in ventricular tachycardia and in tachycardia associated with the Wolff-Parkinson-White syndrome.

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