Ventricular tachycardia is the most common life-threatening tachyarrhythmia seen in patients with structural heart disease. In the past 10 years, many thousands of lives have been saved by the addition of the implantable cardioverter-defibrillator to the armamentarium of treatment options. Yet, despite the success of these devices in the prevention of sudden cardiac death, many patients felt that the psychological cost was too high. Loss or restriction of some of the most basic activities such as driving and working and not knowing when they would receive the life-saving but painful shock took a toll on patients' perceptions of the quality of their lives. When antitachycardia pacing was demonstrated to provide about half of these patients a life-saving, yet comfortable, means of controlling episodes of ventricular tachycardia, physicians and patients were eager to try it. None of the many ways to provide antitachycardia pacing has proved overwhelmingly more effective than the others. This paper describes and illustrates each type of antitachycardia pacing and demonstrates their programmed parameters. Several clinical case illustrations are included.

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