Cardiac Monitoring



Ambulatory cardiac monitoring is a way to watch and record the electrical activity of your heart. It is done as you go about your daily activities. Most of the recording devices are about the size of a cell phone.

Heartbeat on EKG Monitor
Nucleus image
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Possible Complications

There are no major complications associated with this test.



This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.

Edits to original content made by Denver Health.

a (Holter Monitoring; Ambulatory Electrocardiography [EKG])


American Heart Association 

Heart Rhythm Society 


Canadian Cardiovascular Society 

Heart &Stroke Foundation 


Abbott AV. Diagnostic Approach to Palpitations. Am Fam Physician. 2005;71(4):743-750.

Ambulatory monitors. Cleveland Clinic Heart Center website. Available at: Updated September 2013. Accessed September 7, 2017.

Kadish A, Buxton A, et al. ACC/AHA clinical competence statement on electrocardiography and ambulatory electrocardiography. J Am Coll Cardiol. 2001;38(7):2091-2100.