A rapid resting heart rate, especially one above 100 beats per minute.

plural of tachycardia, which can refer to types of tachycardia, cases of tachycardia, or episodes of tachycardia.

plural of ventricular tachycardia

A heart attack involving a heightened heart rate in a ventricle of the heart.

an autosomal dominant inherited heart disorder caused by a mutation in voltage gated ion channels and resulting in arrhythmias. CPVT may cause exercise-induced ventricular arrhythmias and/or syncope occurring during physical activity or acute emotion, but demonstrates no structural problems of the heart. Ventricular tachycardia may self-terminate or degenerate into ventricular fibrillation, causing sudden death without immediate cardiopulmonary resuscitation. The majority of events occur during childhood and more than 60% of affected individuals will have a first episode of syncope or cardiac arrest by age 20.

Of, pertaining to or afflicted with tachycardia.