(HealthDay News) -- A pacemaker is a small implanted device that helps stabilize an irregular heartbeat.

The U.S. National Heart, Lung, and Blood Institute says people with a pacemaker should avoid close and prolonged exposure to devices with strong magnetic fields. These devices have the potential to interfere with a pacemaker's operation. Examples include:

  • MP3 music players and cellular phones.
  • Home appliances, such as a microwave oven.
  • High-tension electrical wires.
  • Electrical generators or metal detectors.
  • Industrial welding machines.