Antiarrhythmics

Vaughn-Williams classification: Phases of the cardiac action potential:

Class I

Lignocaine
Flecainide
Phenytoin
Quinine & quinidine

Indications

VT (Lignocaine). SVT and VT (Flecainide)

Contraindications

Class II

Propanolol
Atenolol

Indications

Contraindications

Class III

Amiodarone
Sotalol

Indications

SVT, VT.

Contraindications

Class IV

Verapamil
Diltiazem

Indications

Contraindications

Class V

Digoxin