A pacemaker is comprised of three elements; a pulse generator, one or more than one lead, and an electrode on each of the leads. A pulse generator happens to be a small metal case that has electronic circuitry that is accompanied by a tiny computer and also a battery that regulates the impulses that are sent to the heart. If the heart rate is slower than the pre-programmed prescribed limit, an electrical impulse gets sent through the lead to the electrode, resulting in the heart beating faster. In the event that the heart is beating at a rate that is faster than the set limit, the pacemaker will not pace at all.
It is well to be noted that modern pacemakers are made in such a way that they work on demand only, thereby not competing with the natural heartbeats. The pacemaker is inserted in the chest, almost below the collarbone, in order to regulate the slow electrical problems concerning the heart. The idea is to ensure that the heartbeat does not fall to dangerously low levels.
Although it is always recommended that once the pacemaker is inserted, a regular scheduled appointment with the doctor must be made to ensure that the device is functioning the way it should be. The doctor uses a special computer known as a programmer to review the activity of the pacemaker and also adjust the settings if required. The pacemaker’s importance can never be ruled out as it helps in stimulating a faster heart rate when it is slow and therefore helps the heart pump out adequate amounts throughout the body.