Sinus arrhythmia in what disease

Sinus arrhythmia is common in pericarditis, hyperthyroidism, acute myocardial infarction and other diseases.

1, pericarditis

pericarditis is due to pathogen infection or tumor metastasis and other factors caused by acute and chronic inflammation. Inflammatory factors can stimulate pericardial exudates to form pericardial effusion. Excessive pericardial effusion can lead to reduced cardiac ejection, so that the body is in a state of hypoxia, ischemia, thus causing sinus arrhythmia.

2, hyperthyroidism Hyperthyroidism patients

thyroid gland will secrete more thyroid hormone, thyroid hormone has a certain toxic effect on the myocardium, can enhance myocardial cell enzyme activity, so that myocardial action potential time shortened, atrial electrical excitability increased, thus causing sinus arrhythmia.

3, acute myocardial infarction

Acute myocardial infarction is usually caused by acute coronary artery occlusion, myocardial ischemia necrosis will make cardiac electrical activity in an unstable state, leading to changes in cardiac rhythm, causing sinus arrhythmia.