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. 

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