Ventricular tachycardia

Ventricular tachycardia (VT) is a rapid heart rhythm originating from the ventricles, typically defined as three or more consecutive ventricular beats at a rate exceeding 100 beats per minute. It is clinically significant as it can lead to decreased cardiac output, syncope, or progress to ventricular fibrillation, which is life-threatening. A common association is ischaemic heart disease, where VT may occur post-myocardial infarction due to scar tissue disrupting normal electrical conduction.