ECG Machine is used to examine and determine the electrical activity of the heart over a given period of time. The machine detects the electrode released from outer surface of the skin and further records by an external instrument attached to it. Thus, the ECG (electrocardiogram) is a test that accounts, examine, and record the electrical activities of the heart. This machine measures the regularity and rate of heartbeat, size, and position of the chambers. It also helps to recognize the damage of the heart, the effects of the medical processes, outcome of the drugs or devices used to maintain the heart like pacemaker.