Figure 1. Progression of the Pacemaker (Source)
Brief: The pacemaker is a small implantable device that is placed in the upper chest and is connected to the heart by a set of small thin insulated wires. The pacemaker is designed so that a health care professional can communicate with the device for small adjustments. As technology improved, many of the devices can be checked remotely without always haveing the patient come to the office. Modern pacemakers are very slim and rounded and hold a lithium-iodide cell that is capable of providing many years of service before the unit needs to be replaced. The purpose of the pacemaker is to artificially control the heartbeat pace and activation of the heart.
