Electrocardiography (ECG)

Electrocardiography (ECG) is a method for recording the electrical activity of the heart, detecting cardiac electrical signals through electrodes placed on the body surface to analyze the heart's rhythm and conduction system function. The objective of ECG is to diagnose arrhythmias, myocardial ischemia, infarction, and other cardiac diseases, as well as to assess the functional status of the heart. Its application value lies in being non-invasive, quick, and cost-effective, making it widely used in clinical diagnosis, health screening, and long-term monitoring of patients with heart disease.