Ventricular tachycardia is a paroxysmal supraventricular tachycardia that results in the heart not being able to pump enough blood. Sustained ventricular tachycardia is an arrhythmia that requires emergency care, as it can lead to ventricular fibrillation and even cardiac arrest.

Ventricular tachycardia is a common arrhythmia in coronary artery disease. To diagnose ventricular tachycardia, doctors need to base on the patient's clinical symptoms and perform subclinical diagnostic methods such as echocardiography, electrocardiogram.