Ventricular tachycardia (VT) is a broad complex arrhythmia which originates from the ventricles and has a rate exceeding 100–120 beats/min. All cases of suspected VT should always be reviewed by a specialist (at least a written assessment). A referral should include a careful history and a copy of an ECG recording taken during the tachyarrhythmia and during the patient’s normal rhythm. VT must not be misdiagnosed as supraventricular tachycardia (SVT) – a misdiagnosis the other way round is not as dangerous .