Two major causes of sequelae of myocarditis

If myocarditis is not treated properly or in time, it is easy to develop sequelae of myocarditis. Sequelae of myocarditis is currently a common disease in clinical practice, because many people rely entirely on drugs for treatment and do not improve their lifestyle habits.

The causes of sequelae of myocarditis can be divided into two aspects:

1. After the virus infects the myocardium, the myocardial immune system is activated. Due to its own factors, the autoimmune regulation function is disordered, and the immune allergic reaction continues to damage the normal myocardium;

2. The virus infection causes severe myocardial damage and severe myocardial fibrosis.

Viral myocarditis is a common and frequently occurring disease in clinical practice. Many people suffer from sequelae due to neglect of timely and correct treatment and proper rest after becoming ill. Due to the lack of effective treatment for a long time, the disease cannot be cured for a long time, causing pain to the patient's life and spirit.

Since different parts of the heart are affected by myocarditis, the clinical manifestations are diverse, such as: long-term premature beats (atrial premature beats, ventricular premature beats), conduction block, tachycardia, bradycardia, myocardial ischemia, etc.

The clinical diagnosis of sequelae of myocarditis can be made based on the onset time, clinical manifestations, and myocardial pathological changes.

Most patients with viral myocarditis recover after appropriate treatment without any remaining symptoms or signs. Very few patients die during the acute phase due to severe arrhythmias, acute heart failure and cardiogenic shock. The condition of some patients tends to stabilize after several weeks or months, but there is a certain degree of heart enlargement, hypocardia, arrhythmia or electrocardiogram changes. This situation remains unchanged for a long time and is generally due to myocardial scar formation after the acute phase, which becomes a sequelae. Some patients develop chronic myocarditis due to persistent inflammation after the acute phase, and gradually develop progressive heart enlargement, heart function impairment, and arrhythmia, and die from the above-mentioned complications after several years or ten to twenty years. The time division of each stage is difficult to determine. Generally, the acute stage is within 6 months, the recovery stage is from 6 months to 1 year, and the chronic stage is more than 1 year. Chronic patients with unclear acute phase are difficult to distinguish from cardiomyopathy. According to current understanding and existing evidence, some cardiomyopathies evolve from myocarditis.