Pacemakers

A pacemaker is a device that is implanted in the chest to assist in controlling and regulating heartbeats after a heart attack or heart failure. The pacemaker sends electrical signals to your heart to stabilize the beat.

A pacemaker is made up of two parts:

• A pulse generator which is a device that generates a series of pulses. A battery and the electrical circuitry that controls the rate of electrical pulses supplied to the heart.
  
  
• Electrodes which are one to three flexible, insulated wires that are implanted in one or more chambers of the heart, each delivering electrical pulses to regulate the heart rate.