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Test at a glance

A Holter Monitor is a continuous recording of your heart’s activity for a period of 20, 48 and 72 hours at a time.

Test overview

The Holter Monitor is used to help detect possible heart-related problems for such symptoms as:

  • Irregular beats
  • Dizziness
  • Fainting

How Does a Holter Monitor Work?

Disposable skin sensors are attached to your chest. (Please Note: Patients may experience irritation and, occasionally, marking of the skin where the sensors are attached.)

  • A cable will connect the skin sensors to a small monitor.
  • The monitor is small enough that it allows you to continue with your normal daily activity.
  • The monitor will continuously record your heart’s activity until disconnected the next day.
  • Be prepared to be in the Labortorary for  takes 45 minutes to 1 hour for hook up and about ½ hour for disconnection

Healthcare Provider Specific Information

Patient should be able to record diary symptoms or have symptoms recorded for them.

Indications for Holter Testing

The diagnosis must be cardiac related with the exceptions of chest pain, CAD, ischemia, ischemic heart disease. These diagnoses do not meet the protocol criteria.

Patient Instructions

Shower or bathe just prior to your appointment.

  • DO NOT use talcums, lotions or perfumes.
  • Wear a comfortable outfit, which opens in the front.
  • Bring a list of all current prescribed medication and herbal remedies.
  • For patients with pacemakers, please bring your Pacemaker Card with the latest setting.


DO NOT wear full slips.

DO wear a comfortable bra, as you will be required to wear it for the entire recording period.


Be aware that shaving will be required to remove any chest hair where sensors are attached

Cardiovascular Disease

Learn more about diagnostic testing for cardiovascular disease.

Did you know that you can book your appointment online?

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