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A pacemaker is used primarily to correct some types of bradycardia, or slow heart rhythms.
The pacemaker is implanted in the body, usually below the collarbone, where it monitors the heart rhythm and triggers an electrical impulse if the heart is beating too slowly. The pacemaker is composed of a small titanium encased pulse generator that contains a lithium battery and electrical circuitry attached to one, two, or three leads (wires) that are inserted into the heart. Pacemaker pulse generators are checked two to three times a year and must be replaced every five to ten years.
Pacemaker implantation takes about one to three hours in the EP lab.
You will also need to carry a pacemaker ID card with you. It contains useful manufacturer specific details regarding your device for medical personnel.