Pacemakers

A pacemaker is a small electronic device smaller than a matchbox, weighing between 20 & 50 grams. It has a battery inside, and it contains electronic programs that both listen to the natural electrical signal of the heart and send a properly timed electrical signal to aid the heart.

Your child will have regular checks to ensure the pacemaker is working properly. Some visits will involve a chest x-ray (to check the leads) and a detailed pacemaker evaluation.

A pacemaker’s battery usually lasts years. The exact answer depends on how much of the time the pacemaker is in use. The batteries last longer if the pacemaker is only used a small part of the time but shorter if the pacemaker makes every beat. Battery life is also determined by how much energy is used to make each heartbeat.

The pacemaker gives a signal during the magnet test (part of the pacemaker check-in clinic) or by the change in rate that tells the doctor the battery is getting low. A battery (generator) change is then scheduled. In general, only the pacemaker battery is changed if the lead is still working well.

Most everyday electrical items such as microwaves, drills and office equipment will not interfere with modern pacemakers.  However, some precautions include airport security systems, avoiding placing mobile phones over the pacemaker area, avoiding placing magnets over the pacemaker area, and MRI scanning, which is generally not allowed.  Check with your consultant or cardiac nurse specialist if you have any concerns.

Your doctor’s recommendations about sports depend mostly on the heart condition and not on the pacemaker.  Children with normal hearts or mild heart defects can usually take PE and play competitive sports. However, your child should avoid contact sports such as boxing or rugby.  Ask your doctor or cardiac nurse specialist about specific restrictions applicable to your child.