What's a heart rhythm?

Sinus rhythm refers to the rhythm or rhythm of the heartbeat. Normal heart beats originate from the sinus node, which sends out electrical signals that activate the atria and ventricles in turn through the normal atrioventricular conduction system, thus stimulating the heart beat. This kind of heart beat caused by the signal from the sinus node is called sinus rhythm, which is the result displayed on the ECG of normal people. The frequency of sinus rhythm is about 60~100 times per minute, that is, the number of heartbeats per minute, that is, heart rate. Normal people's heart rhythm should be uniform, when the origin of the heart rhythm site, heart rate and rhythm and impulse conduction system, etc. any abnormal, will occur a variety of arrhythmias, some physiological, some pathological.