Electrocardiography

特許 係属中 Electrocardiography (ECG or EKG[1] from Greek: kardia, meaning heart[2]) is the recording of the electrical activity of the heart. Traditionally this is in the form of a transthoracic (across the thorax or chest) interpretation of the electrical activity of the heart over a period of time, as detected by electrodes attached to the surface of the skin and recorded or displayed by a device external to the body.