What is heart shortness of breath?

Heart shortness and dyspnea may be caused by myocarditis, hyperthyroidism, acute myocardial infarction and other factors, the specific analysis is as follows:

1. Myocarditis

myocarditis occurs, myocardial congestion, edema, exudation, etc., leading to increased pericardial friction, affecting heart beats, resulting in the above situation.

2. Hyperthyroidism

Hyperthyroidism will increase the patient's basal metabolic rate, accelerate heartbeat contraction, lead to sympathetic nerve excitation, the above phenomenon will occur.

3. Acute myocardial infarction

After acute myocardial infarction, coronary ischemia and hypoxia affect myocardial contraction and relaxation, resulting in insufficient myocardial oxygen supply, thus affecting respiratory function, resulting in heart shortness and dyspnea.