A pacemaker is an airtight closed pacing device. A small device placed under the skin of the chest or abdomen is called an artificial or mechanical pacemaker to normalize the abnormal heartbeat. An artificial pacemaker is a metal box made of titanium. Inside the metal box are lithium batteries, generators and sensors wired to the top. The sensors are called electrodes. The generator is connected to the heart by wires or leads. The pacemaker has two leads, one to the right atrium and the other to the right ventricle. Pacemaker placement takes 30-60 minutes. Lithium batteries can last up to 15 years.
Artificial pacemakers have sense enhancers. Its battery supplies power to the generator. Generators produce electrical impulses. Electrical stimulation is delivered through leads or wires to the right atrium and right ventricle of the heart. The heartbeat is normal. As a result dangerous heartbeat long QT syndrome (LQTS) is controlled. Today, more advanced devices such as ICDs are used to treat long-term heart problems.