A pacemaker is a small, battery-powered device that sends out small electrical impulses to make the heart beat in a regular rhythm and at a normal speed. A pacemaker consists of a pulse generator and battery that create the electrical impulses, and wires (leads) that transmit electricity to the heart.
A permanent pacemaker is typically placed under the skin of the chest.
E. Gregory Thompson, MD - Internal Medicine & John M. Miller, MD - Electrophysiology
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