Cardiostimulator

Pacemaker

A *pacemaker* is a medical device that is used to treat various heart conditions, including arrhythmias and other cardiac disorders. It is a small electronic device that is implanted in the patient's chest and helps monitor and regulate the heartbeat. This article describes the operation of a pacemaker and its use.

Operating principle

A pacemaker works by stimulating electrical signals that come from specific parts of the heart. It consists of two main parts: a pulse generator and electrodes. The pulse generator generates electrical impulses that are transmitted through electrodes located inside the patient's chest to the heart. These impulses help cause the heart to contract and maintain a normal heart rhythm.

The implanted pacemaker contains a battery that allows it to function for a long time (usually three to five years). After this, the pacemaker must be replaced with a new one. Pacemaker replacement can only be done surgically.

Use of pacemakers

Pacemakers are used to treat arrhythmias, including tachycardia, atrial fibrillation and ventricular tachycardia, and to treat other heart rhythm disorders. They may also be used to correct patients with congenital heart defects or to prevent abnormal heart rhythms in people