A resting electrocardiogram (ECG) is a fundamental diagnostic tool employed by physicians to evaluate the heart's rhythm and electrical activity at rest. During this procedure, small electrodes are attached to the chest, limbs, and occasionally the limbs. These electrodes record the heart's electrical signals, which are then displayed on a monitor

A still electrocardiogram (ECG) is a/represents/provides a snapshot/picture/recording of the electrical activity/heartbeat rhythm/heart's signals in your heart/cardiac system. During/Throughout/While performing this test, you will lie down/you are seated comfortably/you remain relaxed on a bed/table/couch, and electrodes/sensors/leads are attached