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Class Ia antiarrhythmics

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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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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