Pacemaker Implantation

Pacemaker is a small battery operated device implanted in the chest to help to control the heart beat. This device senses when your heart is beating irregularly or too slowly. It send signal to the heart that makes its heart beat at right pace. When your heart temporally stops beating because of electrical conduction disturbances ,transient loss of consciousness occurs. This may be accomplished by seizures or patient may fall suddenly.
Normally, the electrical current originates in the sinus node ( the natural pacemaker) & is conducted through the AV node to reach ventricular muscle & endocardium. This electric current stimulates the heart to contract to supply blood to different organs of body. Any block in the conduction system deprives brain of blood supply leading to unconsciousness.


Different conditions requiring Pacemaker:

  • Complete heart block
  • Second degree heart block
  • Sinus node dysfunction & Sick sinus syndrome
  • Cardiac arrhythmias (malfunction of heart beating process)
  • Heart failure
  • History of heart attack

  • Types of Pacemakers:

    1. Single Chamber Pacemakers
    2. It connects the pulse generator to only right ventricle of the heart.

    3. Dual Chamber Pacemakers
    4. With two leads it connects to both chambers on the right side of heart, right atrium & right ventricle.

    5. Biventricular Pacemakers (CRT)
    6. It has three leads connecting to right atrium & two ventricles.