Pacemaker Surgery is done to implant a pacemaker under the skin near the heart, to help control the heartbeat.
Pacemaker is a small instrument of the size of Indian 5 rupee coin. The main function of the instrument is to transmit electrical impulses which keep the heart beating at regular speed. It consists of two main parts, an electric pulse generator and electrodes that transmit the pulses to the heart.
Implanted pacemaker continously monitor the heartbeats, and whenever the beating gets slower that natural, it sends electrical signals to speed up the beating. It keeps the heartbeat regular by creating and transmitting electric pulses at regular intervals of time. This compensates for the lack of electrical activity in the heart and keeps blood flow smooth.
Depending on number of electrodes used, there are 3 types of pacemakers.
- Single Chamber: For carrying electrical signals from generator to the right ventricle of the heart.
- Dual Chamber: Used to control control contractions of the heart, and carry signals to both right ventricle and right atrium.
- Biventricular: Used, only in case of heart failure, to stimulate both left and right ventricles of the heart.