Introduction to Ventricular Tachycardia and Catheter Ablation
Ventricular tachycardia (VT) is a potentially life-threatening cardiac arrhythmia characterized by a rapid heart rate originating from the lower chambers of the heart. For many patients, particularly those with structural heart disease such as a history of myocardial infarction or cardiomyopathy, VT is driven by electrical short circuits formed within areas of scarred heart tissue. When medication fails to control these episodes, catheter ablation becomes a primary therapeutic option. During this procedure, electrophysiologists use radiofrequency energy to create small, strategic lesions in the heart tissue, effectively neutralizing the circuits responsible for the abnormal rhythm. However, despite technical successes in the operating room, predicting which patients will remain free of VT over the long term has historically been a challenge for clinicians.
