Figure 1
The Vaughan Williams classification provided a framework for understanding antiarrhythmic drugs, which targeted the different molecular components of the membrane action potential. APD: action potential duration
Figure 2
Practical use for antiarrhythmic drugs. CHF: congestive heart failure; CAD: coronary artery disease; EF: ejection fraction; ICD: implantable cardioverter defibrillator; AF: atrial fibrillation