How is sinus arrhythmia caused?

Sinus arrhythmia can be divided into physiological and pathological two kinds, the causes are different.

1, physiological

normal circumstances, healthy people in the case of intense sports activities, drinking stimulating drinks, emotional excitement, etc., may occur sinus tachycardia, sinus bradycardia may occur at night sleep.

2, pathological

When the patient has myocardial infarction, congenital heart disease, pericarditis and other diseases, it can cause certain damage to the heart, causing sinoatrial conduction block, sinus arrest, sick sinus syndrome, etc. In addition, if there is fever, infection, intracranial pressure and other extracardiac diseases, may cause sinus tachycardia, sinus block.