Why sinus bradycardia with arrhythmia?

Sinus bradycardia mainly describes that the heartbeat of the subject is different from normal level. Generally, such conditions may occur when the patient is engaged in physical labor for a long time or older, while arrhythmia may be caused by heart disease injury. Physiological factors generally include strenuous exercise, drinking, smoking and insufficient sleep, while pathological factors mainly include coronary heart disease, hypertensive heart disease, rheumatic heart disease, valvular disease, cardiomyopathy, myocarditis and congenital heart disease. In addition, if the patient suffers from hyperthyroidism, stroke and other diseases, it may also directly affect heart rate.