Premature ventricular contractions are a type of cardiac arrhythmia, and the normal value for 24-hour premature ventricular contractions is 0. Also known as ventricular preterm contractions, premature ventricular contractions are one of the most common cardiac arrhythmias, occurring less than five times per minute as episodic and more than five times per minute as frequent. Preventive ventricular contractions can occur in normal people and in patients with a variety of heart conditions. The chance of premature ventricular contractions in normal people increases with age. It can occur in normal people who are mentally disturbed or have a poor lifestyle with excessive alcohol, coffee, and smoking. Premature ventricular contractions are common in patients with hypertension, coronary artery disease, and cardiomyopathy. If ventricular premature beats occur, you should listen to the professional doctor’s advice, if necessary, follow the doctor’s instructions to take drugs such as propafenone, and at the same time improve their own bad habits, quit smoking and alcohol. If you experience premature ventricular contractions, it is important to seek medical advice and treatment according to the doctor’s instructions to avoid delays in your condition.