Warning signs of myocarditis

Science Fiction Network, December 29 (Xu Mingyang) According to Life Times, a study published in the international medical journal Circulation showed that for every 1,000 patients hospitalized for COVID-19, 2.4 to 4.1 developed acute myocarditis. The new coronavirus may induce myocarditis through the following three pathways: direct damage to myocardial cells by the virus; inflammatory cells migrate to myocardial cells and induce local inflammation; and systemic inflammation triggers excessive activation of the immune system and damages the myocardium.

Myocardium is a muscle tissue composed of myocardial cells, which is the functional basis of the heart's autonomic activity. Myocarditis is a localized or diffuse inflammatory lesion of the myocardium, which often occurs in winter and spring. Myocarditis can be divided into two categories according to its cause: infectious myocarditis and non-infectious myocarditis.

Infectious myocarditis is caused by infection with viruses, bacteria, fungi, protozoa, parasites, spirochetes, rickettsiae, worms, etc. Viral myocarditis is more common in daily life. Non-infectious myocarditis mainly refers to allergic or allergic myocarditis, including symptoms of myocarditis caused by rheumatism, drugs, physical and chemical factors, etc.

The chief physician of Tianjin Medical University General Hospital said that once the following symptoms appear, you should be alert to whether you have myocarditis.

Doctors say that there is almost no difference between the initial symptoms of the common cold and viral myocarditis, but if chest pain occurs on this basis, it means that the virus may have invaded the heart, and you should be extra careful at this time.

When myocarditis occurs, the heart's contractile ability is weakened, and a lot of blood cannot return to the heart. It will accumulate in the pulmonary circulation, and the patient will experience symptoms of chest tightness and shortness of breath.

If your heartbeat is too fast or too slow, you should also pay attention. The normal heartbeat is 60 to 100 beats per minute. If your heartbeat is always more than 100 beats or less than 60 beats per minute, you should pay attention to whether the cold has affected your heart.

Because the virus invades the heart, the heart's contractile function decreases, making it unable to effectively supply the body's blood circulation, which can cause ischemia and hypoxia throughout the body, causing the patient to feel extremely tired.

Damage to the heart muscle may cause a drop in blood pressure, which may cause the patient to feel dizzy, faint, or even go into shock.

Severe myocarditis or fulminant myocarditis can cause damage to multiple organ systems. Some patients may experience symptoms such as renal congestion and oliguria, which indicates that the condition is already quite serious.