A pacemaker could be a tiny device with 2 parts — a generator and wires (leads, or electrodes) — that is placed below the skin in your chest to assist management your heartbeat.
People may have a pacemaker for a range of reasons — principally because of one in every of a bunch of conditions known as arrhythmias, within which the heart's rhythm is abnormal.
Normal aging of the center might disrupt your vital sign, creating it beat too slowly.
Heart muscle injury ensuing from a coronary failure is another common reason behind disruptions of your heartbeat.