After 5 cycles of compression ventilation, cardiac monitoring for ventricular tachycardia requires termination of the ventricular tachycardia episode and prevention of recurrence of ventricular tachycardia. 1. Termination of ventricular tachycardia: If hemodynamically stable (no hypotension, shock, etc.), choose drugs such as lidocaine and amiodarone for intravenous infusion. If the hemodynamics is not stable, it is necessary to immediately perform electrical cardioversion, and after successful cardioversion, drugs such as lidocaine can be injected intravenously. 2. Prevention of recurrence: for the emergence of ventricular tachycardia need to find the cause such as myocardial ischemia, hypokalemia, etc., to be targeted treatment, such as metoprolol and other drugs to prevent ventricular arrhythmia, potassium and other symptomatic treatment. The above drugs need to be used under the guidance of a professional cardiovascular doctor, do not use drugs blindly.