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Holter monitor (24h) - Risks

Alternative Names

Ambulatory electrocardiography; Electrocardiography - ambulatory

What the risks are:

There are no risks associated with the test. However, you should be sure not to let the monitor get wet.

Special considerations:

Electrodes must be firmly attached to the chest so the machine gets an accurate recording of the heart's activity.

While wearing the device, avoid:

  • Electric blankets
  • High-voltage areas
  • Magnets
  • Metal detectors

It is very important for you to keep a diary of symptoms. The diary should include the date, time of day, type, and duration of symptoms.

  • Reviewed last on: 6/1/2010
  • Issam Mikati, MD, Associate Professor of Medicine, Feinberg School of Medicine, Director, Northwestern Clinic Echocardiography Lab, Northwestern University, Chicago, IL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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