I. What is ventricular premature contraction? Premature ventricular contraction (or ventricular premature contraction), or ventricular premature contraction for short, is caused by an electrical impulse from any part of the ventricle or an ectopic rhythm point in the septum that causes the ventricle to depolarize before the sinus node impulse reaches the ventricle. Ventricular premature contraction is a very common clinical arrhythmia that occurs in a fairly wide range of people, including normal healthy people and patients with various heart conditions. The clinical symptoms of ventricular premature contractions are highly variable, ranging from asymptomatic, with mild palpitations and discomfort, to premature contractions triggering malignant ventricular arrhythmias leading to syncope or blackouts, and there is no parallel between clinical symptoms and prognosis. The clinical prognosis of ventricular premature beats varies in normal healthy populations as well as in patients with various different heart diseases. What are the causes of premature ventricular contractions? 1. Autonomic function factor: This is one of the most common causes of ventricular premature contractions. When autonomic dysfunction, whether it is vagal excitation or sympathetic excitation, the excitability of the fast and slow fibers of the myocardium can be unbalanced, which can cause changes in the non-response period and conduction speed, leading to refractory ventricular premature contractions. Excessive secretion of catecholamines increases the autoregulation of ventricular autoregulatory cells, leading to ventricular premature contraction, etc. Excessive intake of cigarettes, alcohol, tea, coffee, etc., excessive mental stress, overexertion, long-term insomnia, over-eating, neurasthenia, autonomic dysfunction, menopause and other factors are related to the occurrence of ventricular premature contraction. 2, left ventricular pseudotendinous and ventricular premature contraction: in those who have ventricular premature contraction without the basis of organic heart disease, by echocardiography, 56% to 75% of patients detected left ventricular pseudotendinous. Pseudotendinous ventricular precontractions are benign precontractions, and do not require treatment if they are infrequent. 3, organic heart disease: ventricular asystole is also seen in organic factors, such as ischemic cardiomyopathy, coronary heart disease, pulmonary heart disease, rheumatic heart valve disease, hyperthyroid heart disease, etc.; various causes of myocarditis, cardiomyopathy, heart failure, whether acute diffuse myocardial lesions, or focal lesions, can be due to ischemia, hypoxia, inflammatory damage, etc., resulting in increased excitability of the ectopic rhythm point or affect the myocardial fiber nonresponse period or conduction velocity, causing ventricular premature contractions. Benign premature ventricular contractions are those in which no evidence of heart disease can be found by various examinations and are very common in clinical practice. Benign ventricular premature contractions will gradually increase with age, but they do not have a great impact on health, so do not overburden your mind. The occurrence of benign ventricular premature contractions can be triggered by heavy alcohol consumption, smoking, strong tea and coffee, anxiety, stress, and poor sleep, and should be avoided as much as possible. Valium can be used for treatment, and betalactam is mostly effective when the heart rate is fast. You can also take Chinese herbal medicine to stabilize the heart, the effect is also good. It is not advisable to use too many anti-arrhythmic drugs for benign ventricular premature beats to avoid more serious side effects. 2. Ventricular premature beats with prognostic significance are ventricular premature beats that occur on the basis of organic heart disease, and the most common heart diseases are coronary heart disease and cardiomyopathy. You can check the echocardiogram, blood lipids, blood sugar, etc., and, if necessary, the subpolar plate exercise test ECG to exclude coronary artery disease and cardiomyopathy. Ventricular premature contractions with prognostic significance should be medicated under the guidance and observation of a cardiologist. In addition to antiarrhythmic drugs, the following predisposing causes should be treated, such as myocardial ischemia, heart failure, low blood potassium and low blood magnesium.