Pacemakers are temporary or permanent, a medical device that uses electrical impulses, delivered by electrodes for contracting the heart muscles, to regulate the beating of the heart. The primary purpose of the pacemaker is to maintain an adequate heart rate, either because the heart's natural pacemaker is not fast enough, or because there is a block in the heart's electrical conduction system. Modern pacemakers are externally programmable and allow a cardiologist to select the optimum pacing modes for individual patients. Some combine a pacemaker and defibrillator in a single implantable pacemaker device. Some pacemakers have multiple electrodes stimulating differing positions within the heart to improve synchronization of the lower chambers or ventricles of the heart. Sometimes it is a complex procedure when you have a senior patient, Dr. Suresh Vijan is a specialist in a pacemaker implant.