In the summer, the peak of the post-graduation unit entry physical examination, many young people with the physical examination ECG to the cardiologist asked, “The ECG diagnosis shows a ventricular pre-term contraction, is it important? Is it a heart disease? Will it affect the entry into the job? Today, the heart Yi classroom for everyone to popularize the ventricular preterm contraction or not! A. What is ventricular premature contraction and is it common? Ventricular premature contraction, also known as ventricular premature beat, refers to the ectopic excitation foci below the His bundle and branches of the ventricular muscle in advance of the depolarization of the ventricle, is the most common clinical arrhythmia. It is the most common arrhythmia in clinical practice. It can occur in both normal healthy people and patients with various heart diseases, and has a wide variability of clinical symptoms and a good prognosis. Premature ventricular contractions are very common with or without structural heart disease. A survey of the general population found that the prevalence of ventricular prematureness detected by a normal 12-lead ECG was 1%, while that detected by a 24h or 48h ambulatory ECG was 40%-75%. It can be said that about half of the general population will have ventricular prematureness. The prevalence of ventricular prematureness increases with age and is as high as 69% in people >75 years of age. The incidence of ventricular prematureness has a circadian rhythm, and most people have an increase in sympathetic excitability during the daytime. What are the causes of ventricular prematureness? The essence of ventricular premature is the premature depolarization of ventricular muscle, and any factors that can cause premature depolarization of ventricular muscle can be the cause of ventricular premature. For the general population without structural heart disease, ventricular premature can be triggered by mental stress, overexertion, excessive smoking, alcohol and coffee. Various structural heart diseases such as coronary heart disease, cardiomyopathy, valvular heart disease and mitral valve prolapse are also common causes of ventricular premature. Other factors such as digitalis, tricyclic antidepressant poisoning, electrolyte disorders (low potassium, low magnesium) can also induce ventricular premature. What are the clinical manifestations of ventricular prematureness? The clinical manifestation of ventricular premature ventricle varies from person to person, most patients with frequent ventricular premature ventricle may have no obvious symptoms, but some patients with occasional ventricular premature ventricle may have serious symptoms. The most common symptoms include palpitations, chest tightness, and a feeling of cardiac arrest. Some patients with ventricular premature may have decreased cardiac output and inadequate perfusion of important organs, which may lead to weakness, shortness of breath, sweating, dizziness, darkness, and even angina pectoris. 4. So should ventricular premature be treated or not? 1, for patients without structural heart disease generally do not need treatment, improve lifestyle, avoid tobacco, alcohol, tea, coffee and other irritants, to ensure sleep, reduce mental stress, will be alleviated. 2.For some patients with multiple reexaminations suggesting decreased left ventricular systolic function or increased ventricular volume, asymptomatic frequent ventricular premature also need treatment. 3.For patients with ventricular premature occurrence >5% as assessed by ambulatory electrocardiogram, evaluate whether to perform drug or radiofrequency ablation treatment. For patients with structural heart disease, symptoms are the main basis for treatment consideration. Therefore, it is not necessary to worry about young people with premature ventricular contractions without structural heart disease.