An EKG sinus rhythm is a normal heart rhythm that is signaled by the sinus node. Sinus rhythm is also known as sinus node rhythm. The sinus node is located at the junction of the superior vena cava and the right atrium, which sends out impulses that cause the heart muscle cells to contract and diastole, completing a single heartbeat, and the blood reaches the entire body to ensure blood supply to all the organs. Sinus rhythm on the EKG is derived from the sinus node, which means that the heart’s pacing point is normal. If there is a problem with the sinus node, other parts of the heart send out impulses in advance, causing the heartbeat, for ectopic rhythms, such as atrial premature beats, ventricular premature beats, atrioventricular junctional premature beats, and so on. In summary, an EKG sinus rhythm is assessed as a normal rhythm in terms of whether the pacing point is normal. During the ECG examination, it is also necessary to pay attention to whether the heart rate is normal or not, and the normal range of the heart rate is 60-100 beats/minute in the quiet state of adults; as well as whether there are changes in the ST-T segment, whether there are shifts in the electrical axis, etc. It is recommended to be evaluated by a professional for judgment. If there is any discomfort, it is recommended to consult a doctor in time to avoid delaying the condition.