Health guide: 1. Prevention of infection: Viral myocarditis is caused by viral infection. It is very important to prevent the invasion of viruses. Especially to prevent respiratory tract infection and intestinal infection. People who are prone to colds should pay attention to nutrition, avoid overwork and choose appropriate physical activities to enhance their physique. Avoid going out unnecessarily. When you have to go out, you should pay attention to keep warm and eat healthily. Wear a mask during the cold epidemic and avoid going to crowded public places. 2. Combination of work and rest: physical fatigue caused by sudden emotional excitement or excessive physical activity should be avoided, which will reduce the body's immunity and disease resistance. 3. Appropriate rest: generally, you should stay in bed for 2-4 weeks during the acute attack, and you should still rest for 2-3 months after the acute attack. Severe myocarditis with enlarged cardiac boundary should be rested for 6 to 12 months until the symptoms disappear and the cardiac boundary returns to normal. Myocarditis sequela people can live and work as normal as possible, but don't read, work or even stay up late for a long time. 4. Diet adjustment: The diet should be high in protein, calories and vitamins. Eat more glucose, vegetables and fruits. Avoid overeating and avoid spicy, smoked and fried products. When smoking, nicotine in tobacco can promote coronary artery spasm and contraction, affect myocardial blood supply, and drinking alcohol can cause vascular dysfunction, so we should quit smoking and drinking alcohol. You can take chrysanthemum porridge, ginseng porridge and so on in your diet. And you can take sun-dried ginseng and American ginseng according to the doctor's advice, which is beneficial to the recovery of myocarditis. 5. Physical exercise: In the recovery period, if you take proper exercise according to your physical strength, such as walking, aerobics, qigong, etc., you can recover as soon as possible to avoid sequelae. As long as myocarditis sequela has no serious arrhythmia, he can take part in general physical exercises, such as jogging, dancing, Hexiangzhuang Qigong and Tai Ji Chuan. Persistence is definitely good for the recovery of the disease. Why does myocarditis cause arrhythmia? Myocarditis is mostly caused by infection, but it can also be caused by non-infectious diseases. No matter what the reason, myocardial degeneration is always accompanied by different degrees of inflammation. Lesions are usually eventually replaced by scar tissue, so local fibrosis always occurs after focal degeneration. Due to the inflammatory reaction of myocardium, the injury of myocardial small blood vessels and the emergence of immune mechanism, coronary arteriopathy, cardiac neuropathy and excessive contraction of the heart may occur. For example, the blockage of arterioles in the ventricle will lead to insufficient blood supply to the myocardium, loss of contractility, reduction of cardiac output, enlargement of the heart and failure. When the arterioles of the conduction system are blocked, which affects the cardiac repolarization, conduction disorder and arrhythmia may occur, thus various arrhythmias may occur. Young people have arrhythmia. Must be myocarditis? Some young people often have chest tightness, shortness of breath, rapid heartbeat and palpitation after work stress, fatigue and shock. Check the electrocardiogram for arrhythmia. People often think that myocarditis is not necessarily caused by myocarditis. The arrhythmia caused by the above symptoms is mostly functional, that is, it causes heart and nerve dysfunction. So it is more common in people with mental stimulation and excessive brain tension. Due to the dysfunction of autonomic nervous system, the excitation and inhibition process of cerebral cortex is damaged, which affects the normal function of cardiovascular system and causes arrhythmia. Therefore, in the above situation, first of all, don't be nervous, let go of mental burden, listen to relaxing music, adjust your mood and check and treat yourself under the guidance of a doctor, and rule out other diseases. Better curative effect can be obtained by conditioning with traditional Chinese medicine or applying sedative drugs for a short time. In addition to the above reasons, arrhythmia in a few young people is an infection caused by myocarditis or congenital heart disease and genetically related heart disease. How to judge whether arrhythmia is caused by viral myocarditis? Judging whether arrhythmia is caused by viral myocarditis mainly has the following points: (1) Infection is usually the first, especially upper respiratory tract infection, which often causes symptoms such as fever, joint pain and general burnout. A few patients have digestive tract symptoms such as nausea and vomiting. (2) Subsequently, symptoms of myocarditis such as palpitation, chest tightness, dull pain in precordial area, dizziness and dyspnea occurred. (3) Physical examination can find tachycardia or other arrhythmia that is not parallel to the degree of fever. Some patients have enlarged hearts and changed heart sounds, and the third heart sound or the first heart sound is weakened or the fourth heart sound is rushing. (4) Laboratory examination: The white blood cell count may or may not increase, for example, the erythrocyte sedimentation rate may increase in acute phase, and serum enzymes include aspartate aminotransferase, lactate dehydrogenase and creatine phosphokinase. Electrocardiogram showed ST T change, decreased R wave and pathological Q wave. About13 patients may have I-II degree atrioventricular block. (5) Etiological examination: The virus can be isolated from throat swabs or feces, and the specific antibodies (neutralization, hemagglutination mechanism and complement fixation test) in serum are increased, and the IgM titer is increased. If a myocardial biopsy is done, the virus can be isolated from the myocardium. Therefore, whether arrhythmia is caused by myocarditis in clinic must be judged by combining medical history, clinical manifestations and auxiliary examination. In addition, myocarditis can also be caused by "bacterial" infection, such as rheumatic fever caused by streptococcus infection, and it can also cause rheumatic myocarditis. According to the hemogram, ESR, anti-O and medical history, it is not difficult to distinguish it from viral myocarditis. Under what circumstances is the arrhythmia of myocarditis easy to appear? Recently, some young people have myocarditis, the most common is viral myocarditis, and some are bacterial (diphtheria, etc. ) fungi and protozoa. These viruses and bacteria directly invade the myocardium, as well as the damage of small blood vessels in the myocardium, myocardial damage caused by immune mechanism and myocardial damage caused by toxins, leading to myocardial cell lysis, interstitial edema and monocyte infiltration. If pathological sections are examined, microscopic examination shows that there may be histiocyte, lymph, eosinophil or neutrophil infiltration and interstitial edema in the connective tissue between myocardial fibers and around blood vessels, and myocardial fibers may be fatty, granular or glassy, or myocardial dissolution or necrosis. If the pathological changes of myocarditis affect the pacing conduction system of the heart, such as sinoatrial node, atrioventricular node, atrioventricular bundle, Purkinje fiber, etc., arrhythmia is easy to occur. In addition, patients with myocarditis should have a full rest in the acute phase, and should prevent excessive fatigue, emotional excitement, full meal, overeating spicy and greasy, and excessive atrioventricular. Otherwise, under the above circumstances, it is easy to aggravate the burden of myocardium, aggravate the condition and lead to arrhythmia. As we all know, insufficient blood supply to the heart will lead to excessive enlargement of myocardium. Because of these changes, the heart will become weak, and it can't provide the normal amount of circulating blood to the body. In this way, it will cause systemic edema (usually edema of the lower limbs first), dyspnea and other symptoms. Heart support device is a special mesh bag made of polymer resin, which is directly worn on the chest by surgery. This elastic sheath can prevent the pathological changes of myocardial size and restore the normal shape of myocardium.

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