The normal, healthy heart has its own pacemaker, which regulates the rate at which the heart beats.
However, some hearts do not beat regularly. And a pacemaker can solve the problem. A pacemaker is a small device that sends electrical impulses to the heart muscle to maintain an appropriate heart rate and rhythm. It is implanted directly under the skin of the breast for minor procedures.
The pacemaker consists of two parts: leads and a pulse generator. The pulse generator houses the battery and a small computer and is located just under the skin of the chest. Leads are wires that are inserted into the veins of the heart and implanted in the heart muscle. They send pulses from the pulse generator to the heart muscle and record the heart's electrical activity.
Each impulse causes the heart to contract. The pacemaker can have one to three leads, depending on the type of pacemaker needed to treat your heart condition.