Pacemaker

A pacemaker is a small device with an internal battery that is implanted to keep your heart rhythm stable. It sends electrical impulses when the heart beats too slowly or irregularly. The device helps your heart to keep beating fast enough, reducing the risk of fainting.

When is a pacemaker needed?

A pacemaker is most often implanted in people with bradycardia, which is a heart rhythm disorder in which the heart beats too slowly. Possible causes include:

  • Age-related changes in the heart's electrical conduction system
  • Heart disease
  • Certain medications
  • Congenital conditions

Symptoms of a slow heart rhythm

The following symptoms may occur:

  • Tiredness
  • Dizziness or fainting
  • Shortness of breath
  • Palpitations
  • Reduced exercise tolerance

How does a pacemaker work?

A pacemaker consists of a small battery and one or more electrodes (wires) that are placed in the heart. The device continuously monitors your heart rhythm. If the heart beats too slowly or stops beating on its own, the pacemaker sends an electrical impulse to stimulate the heart and restore a regular rhythm.

There are different types of pacemakers, adapted to your heart rhythm and individual needs.

How is a pacemaker placed? 

The pacemaker is usually implanted under local anaesthetic. The doctor places the device under the skin, most often below the collarbone, and guides the electrodes to the heart through a blood vessel. After the procedure, you will have a scar of a few centimetres. You usually stay in the hospital for one night.

Living with a pacemaker

After the procedure, you can usually resume your daily activities. You will rarely feel the device, but there are a few practical points to keep in mind:

  • You will have regular follow-up appointments at the hospital
  • Avoid strong magnets and certain devices that may interfere with the pacemaker
  • Do not lift the arm on the side of the pacemaker above shoulder level for one month
  • You are not allowed to drive during the first month after implantation

The battery of a pacemaker's usually lasts between eight and fifteen years, depending on the type of device and how often it is used.