of or pertaining to an electrocardiogram (ECG) or electrocardiograph

By means of electrocardiography

(medicine) Electrocardiographic.

a device used in the diagnosis and detection of heart abnormalities that measures electric potentials on the surface of the body and creates a record (electrocardiogram) of the electrical currents associated with heart muscle activity

plural of electrocardiograph

(medicine) One who performs electrocardiography, especially professionally.

plural of electrocardiographer