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. Most pacemakers have wires (leads) that transmit electricity to the heart. A pacemaker has one or more leads. A lead goes from the pacemaker through the subclavian vein and into a heart chamber, such as the right atrium or right ventricle. The end of the lead is in the heart chamber to stimulate the muscle.
A permanent pacemaker is typically placed under the skin of the chest. One type of permanent pacemaker is placed inside the heart. This type does not have leads.
Current as of: December 16, 2019
Author: Healthwise Staff Medical Review: E. Gregory Thompson, MD - Internal Medicine Martin J. Gabica, MD - Family Medicine Adam Husney, MD - Family Medicine John M. Miller, MD, FACC - Cardiology, Electrophysiology Steven J. Atlas, MD, MPH - Internal Medicine
Medical Review:E. Gregory Thompson, MD - Internal Medicine & Martin J. Gabica, MD - Family Medicine & Adam Husney, MD - Family Medicine & John M. Miller, MD, FACC - Cardiology, Electrophysiology & Steven J. Atlas, MD, MPH - Internal Medicine