Ventricular Tachycardia：A Registry Study

Inclusion Criteria: * Adults aged ≥18 years. * Documented sustained ventricular tachycardia (VT), or nonsustained VT requiring therapeutic intervention in the investigator's judgment, confirmed by a 12-lead electrocardiogram, ambulatory electrocardiographic monitoring, continuous cardiac monitoring, implantable cardiac device recordings, or electrophysiological study. * Structural heart disease diagnosed according to current clinical guidelines. * Willing and able to provide written informed consent. * Willing to comply with the study follow-up schedule. Exclusion Criteria: * Ventricular tachycardia secondary to reversible causes (e.g., acute myocardial ischemia or electrolyte disturbances). * Idiopathic ventricular tachycardia without evidence of structural heart disease. * Cardiac surgery within 60 days before enrollment. * Severe infectious diseases (e.g., septic shock or sepsis). * Severe coagulation disorders, including platelet count \<50 × 10⁹/L or disseminated intravascular coagulation. * Participation in another interventional clinical study that may interfere with this registry. * Any other condition that, in the investigator's judgment, makes the participant unsuitable for study participation.