What is a Holter monitor test?

The Holter monitors test records continuously your heartbeats. Usually for about 24 to 48 hours. A Holter monitor is a small, portable device that keeps track of your heart rhythm. Your doctor may request to wear a Holter monitor for over two days, depending on your condition is.

Sometimes your doctor may ask for a Holter monitor test when a traditional electrocardiogram (ECG) does not give enough information about your heart’s condition.

Why is a Holter monitor test performed?

Typically, a Holter monitor is performed to detect irregular heart rhythm (arrhythmia) or unexplained fainting and is usually done if you have a heart condition that increases your risk of an abnormal heart rhythm.. Generally, you’ll have an electrocardiogram (ECG) before you get a Holter monitor.

The Risks a Holter monitor test

There are no risks, but while wearing a Holter monitor, some precautions should be considered.

  • Holter monitor can not get wet, or it will be damaged.
  • Avoid swim or bathe while wearing your Holter monitor.
  • Sometimes electrical appliances can interrupt the signal from the electrodes to the Holter monitor. Avoid the following:
    • Electric blankets
    • Electric razors and toothbrushes
    • Magnets
    • Metal detectors
    • Microwave ovens
    • Keep your mobile devices at least 6 inches from the Holter monitor
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