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Holter monitoring (Pediatric and Adult)

Preparing for Vascular ProceduresCardiac catheterization labCardiolite stress test
Electrocardiography (Pediatric and Adult)Event recorderHolter monitoring (Pediatric and Adult)
Stress testing (Pediatric and Adult)Thallium stress testTilt table testing
Transesophageal echocardiogram

What is a Holter monitor?

A Holter monitor is a small electrocardiogram (EKG) that is carried with you. Holter monitoring begins with the placement of small pads (electrodes) on your chest. These pads are connected to the Holter monitor. The lightweight unit is then attached to a belt or shoulder strap and must be worn for at least 22 hours.

Why do I need it?

The Holter monitor enables a longer recording of your heartbeat to be made while away from your doctor's office. This recording can then be reviewed by a cardiologist at a later time.

What do I need to know about wearing it?

While wearing the monitor:

  • Try to sleep on your back.
  • Do not take a shower. Take a sponge bath instead.
  • Follow your normal routine. You may work and/or exercise.

Be sure to stay away from:

  • Electric blankets
  • Magnets
  • Metal detectors
  • High-voltage areas such as power lines

How does the monitor work?

While wearing the monitor you will need to keep a diary. The data from the monitor and your diary will be analyzed by a computer and reviewed by a cardiologist at Advocate Lutheran General Hospital.

Your diary should include the following information:

  • The time of day for each entry you make.
  • A notation for each change in activity, including when you take medicine.
  • A notation of any symptoms you feel.

Here is a patient's sample diary. Your own entries will differ from the example shown.




 7:00 a.m. 

 took medicine


 7:30 a.m.

 ate breakfast


 8:00 a.m.

 drove to work

 heart beat faster

 9:00 a.m.

 meeting with boss 

 heart beat faster

A written report will be mailed to your physician in approximately 5 to 7 work days. Please contact your physician to discuss your results.

Your medical care team will give you instructions on when and how to return the monitor and diary.

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Reducing your risk for heart disease

  • Don't smoke
  • Have your blood pressure checked regularly
  • Reduce your intake of fats and cholesterol
  • Maintain your ideal weight
  • Exercise regularly according to your physician's guidelines


Our goal is to provide you with excellent care. If you have any questions or comments, please contact:
Janet Duval, RN, BSN
Manager, Non-invasive Cardiovascular Diagnostics

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