A pacemaker is a small device that helps control your heart rate by:

  • Speeding up the heart rate when it is too slow
  • Slowing down the heart rate when it is too fast
  • Helping the rhythm of the heart beat regularly – this is if you have a pacemaker combined with a defibrillator, also called an ICD

A pacemaker is placed in the chest during surgery. Wires called leads are put into the heart muscle. The device with the battery is placed under your skin, below your shoulder.

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