Electrocardiography - Wikipedia Traditionally, "ECG" usually means a 12-lead ECG taken while lying down as discussed below However, other devices can record the electrical activity of the heart such as a Holter monitor but also some models of smartwatch are capable of recording an ECG
Electrocardiogram (ECG or EKG) - Mayo Clinic This common test checks the heartbeat It can help diagnose heart attacks and heart rhythm disorders such as AFib Know when an ECG is done