what-is -pacemaker
A pacemaker is more than a machine; it is a life-supporting device that restores the heart’s natural rhythm. It connects medical science with human life, bringing balance, safety, and confidence to people with heart rhythm problems.
The Pacemaker
The human heart beats regularly because of its natural electrical system. Sometimes this system becomes weak and fails to keep a normal rhythm. When this happens, doctors use a small medical device called a pacemaker. It helps the heart maintain a steady and proper heartbeat.
Meaning
A pacemaker is a small electronic device placed under the skin near the chest. It sends gentle electrical signals to the heart to keep it beating at the correct speed. It acts like an artificial controller for the heart’s rhythm.
Types of Pacemakers
1. Single Chamber Pacemaker – It has one wire connected to one heart chamber, either the right atrium or the right ventricle.
2. Dual Chamber Pacemaker – It has two wires, one in the upper and one in the lower chamber, to help them beat in coordination.
3. Biventricular Pacemaker – It has wires in both ventricles and is used in patients with heart failure to improve pumping.
4. Leadless Pacemaker – It is a small wireless device placed directly inside the heart, reducing the chance of infection.
Uses
Pacemakers are used when the heart beats too slowly or irregularly. They are also used in heart block or heart failure. The device helps prevent dizziness, weakness, and fainting by keeping blood flow normal.
Battery Life
A pacemaker works with a small lithium battery. The battery lasts from 5 to 15 years, depending on how much the device is used. When the battery becomes weak, the device shows a signal to the doctor, and it can be replaced safely before it stops working.
Adjustability
Modern pacemakers can adjust the heart rate according to body needs. They can increase the heart rate during exercise and slow it down during rest. Some pacemakers can also be checked and adjusted from outside the body using wireless technology.
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