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Can premature beats affect health? In clinical work, people often ask: Will "premature beats" affect health? As mentioned earlier, the beating of the heart is directed by the sinoatrial node. Under normal circumstances, regular impulses from the sinoatrial node are transmitted to the atria and ventricles through the conduction system of the heart, thus driving the whole heart to beat. For some reason, the excitability of a certain part of myocardium in atrium or ventricle is too high, or there is something wrong with the conduction system, then premature beats and premature beats can suddenly appear in normal rhythm. This condition is called premature beat, which is also called premature beat or premature contraction and extrasystole. According to the origin of premature beats, it can be divided into atrial premature beats, atrioventricular junction premature beats and ventricular premature beats. Ventricular premature beats are the most common, followed by atrial premature beats, and junctional premature beats are the least common. Premature beat is one of the most common arrhythmia. It has been reported that in asymptomatic normal people, 50% people have premature beats after 24 hours of continuous observation of dynamic electrocardiogram. After 48 hours of continuous observation, 70% ~ 80% people have premature beats. Usually, when the heart is beating, you can't feel it. When premature beats occur, you can feel the heart beating because of the strong contraction of the ventricle; Because there is a pause after the premature beat, you can feel the heartbeat pause again. Everyone feels inconsistent, some say that the heart is fluctuating, some feel that the heart is about to jump out of the throat, and some are obviously flustered and uncomfortable. In addition, it may be accompanied by chest tightness, nausea, cough, dizziness and other discomfort. Some people even have frequent premature beats, but they don't have any feelings and symptoms, only when doctors auscultate or ECG. The heart beats in an orderly and regular way, mainly pumping blood to meet the needs of various tissues and organs in the whole body. Premature beats, especially ventricular premature beats, will reduce cardiac output. But premature beats less than 6 times per minute have little effect on health. Occasional atrial premature beats only reduce coronary blood flow by 5%, and occasional ventricular premature beats by 65438 02%, both of which have no effect on cerebral circulation. Frequent premature beats of more than 6 times per minute are different. It can reduce coronary blood flow by about 25%, cerebral blood flow by 8% ~ 12% and renal blood flow by 8% ~ 10%, which has certain influence on health. However, the key is whether there is organic cardiovascular disease. If you have serious heart disease, frequent premature beats will lead to myocardial ischemia, angina pectoris or heart failure. Frequent atrial premature beats are often the signal of atrial fibrillation in patients with heart disease. Frequent ventricular premature beats can develop into ventricular tachycardia and even sudden death due to ventricular fibrillation. If there is no serious heart disease, even if premature beats often occur, it will not cause serious consequences. Clinically, functional or physiological premature beats are very common. Normal people can have premature beats when they are overworked, nervous, excited and anxious, or when they smoke a lot, drink alcohol, drink coffee or strong tea, or rest or sleep in bed. Constipation can occur in the elderly. This kind of functional premature beat can disappear after the induced cause is eliminated. After a comprehensive and in-depth inspection of the generator, no signs of heart disease were found. Some healthy people are very nervous and afraid after several premature beats, which in turn promotes the increase of premature beats. Pathological premature beats are not uncommon. It occurs in various organic heart diseases or other pathological conditions, such as fever, anemia, hyperthyroidism, rheumatism, hypertension, hypokalemia, severe hypoxia or drug poisoning. It can be said that the appearance of this premature beat is an important signal of myocardial ischemia and injury. For example, premature beats in patients with coronary heart disease and myocardial infarction often indicate severe myocardial ischemia; Premature beats in patients with rheumatic heart disease often suggest cardiac insufficiency; Premature beats in patients with hypertensive heart disease are usually related to ventricular hypertrophy and tension. Generally speaking, premature beats in the elderly and children are often organic. If angina pectoris or heart failure occurs during premature beats, it must be organic. People with heart disease symptoms such as shortness of breath or enlarged heart, or people with coronary heart disease inducing factors (hypertension, hyperlipidemia, diabetes, obesity, family history, etc.). ) premature beats, mostly organic. Organic premature beats have different effects on health and should be treated promptly and reasonably under the guidance of doctors.