Difference between myocarditis and myocardial injury

Written by Tao Kun

Geriatrics

Updated on September 05, 2024

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Myocarditis is inflammation of the myocardial cells caused by a virus that has not been timely cleared following a respiratory or gastrointestinal viral infection. It is a term used for disease diagnosis.

Myocardial injury, on the other hand, refers to the necrosis of myocardial cells due to various factors, including viral myocarditis and myocardial ischemia caused by the narrowing of coronary arteries. Therefore, myocardial injury is a state diagnosis, not a term used for disease diagnosis. Myocardial injury usually leads to elevated levels of troponin.

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Written by Zhou Yan

Geriatrics

42sec

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The dangers of myocarditis

Myocarditis is an inflammatory disease of the myocardium. Most cases of myocarditis are self-limiting, but if not treated promptly, it can progress to dilated cardiomyopathy. Dilated cardiomyopathy often begins insidiously. Once symptoms appear and the patient enters the stage of heart failure, the condition becomes very serious. Additionally, a minority of patients experience a fulminant onset, leading to acute decompensation or sudden death. Fulminant myocarditis and severe myocarditis progress quickly and have a high mortality rate, thus highlighting the dangers of myocarditis.

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Written by Chen Si

Pediatrics

1min 16sec

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Is pediatric myocarditis serious?

The severity of myocarditis in children needs to be assessed by considering the child's clinical symptoms and corresponding clinical examinations comprehensively. Common clinical symptoms include chest tightness, fatigue, shortness of breath, etc. Most children have a history of upper respiratory tract infection before the symptoms appear. It is necessary to conduct routine blood tests, myocardial enzymes, troponin, myocardial antibodies, viral antibodies, electrocardiograms, and other relevant physicochemical examinations to further clarify the condition. Patients with mild symptoms and roughly normal laboratory results can improve on their own with rest. If there are clinical symptoms such as chest tightness, fatigue, shortness of breath, and related physicochemical examinations show abnormal changes, it is necessary to use medication to nourish the myocardium. During treatment, rest is advised, reduce fatigue, maintain emotional stability, and generally, the symptoms can improve within 10 to 15 days. For more severe cases, the treatment period may need to be extended accordingly.

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Written by Tao Kun

Geriatrics

42sec

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Difference between myocarditis and myocardial injury

Myocarditis is inflammation of the myocardial cells caused by a virus that has not been timely cleared following a respiratory or gastrointestinal viral infection. It is a term used for disease diagnosis. Myocardial injury, on the other hand, refers to the necrosis of myocardial cells due to various factors, including viral myocarditis and myocardial ischemia caused by the narrowing of coronary arteries. Therefore, myocardial injury is a state diagnosis, not a term used for disease diagnosis. Myocardial injury usually leads to elevated levels of troponin.

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Written by Xiao Chang Jiang

Cardiology

33sec

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Is myocarditis contagious?

Many people often ask if my myocarditis is contagious. Actually, myocarditis is a focal inflammatory lesion of the myocardium or a diffuse inflammatory disease of the entire myocardium. It is an inflammatory disease of the myocardium. Based on the cause, we classify it into infectious and non-infectious types. The infectious type is mostly caused by viruses, such as Coxsackievirus B, or by bacteria, while non-infectious type is caused by allergies. Generally, they are not contagious.

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Written by Zhou Yan

Geriatrics

1min 1sec

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How is myocarditis diagnosed?

The examination of myocarditis includes several aspects: First, the biochemical blood test shows that white blood cells can increase, erythrocyte sedimentation rate can accelerate, and both cardiac enzymes and troponins can rise. There may also be abnormalities in the electrocardiogram, such as arrhythmias or ST-segment changes. In addition, there are X-ray examinations, which can show an enlarged heart shadow or pulmonary congestion. Echocardiograms may not show any specific changes or can exhibit phase-dependent or regional abnormalities in ventricular wall motion. Furthermore, nuclear imaging and magnetic resonance imaging indicate the presence of fluttering and inflammatory changes. The virological examination can isolate the virus through throat swabs or stool samples, and if necessary, an endocardial or myocardial biopsy can be performed.