Holter Monitor

What is a Holter monitor?

A cardiac Holter monitor is a convenient and compact ECG that you wear around your waist for an agreed time period, usually 24 to 72 hours, that monitors your heart continuously whilst you carry on with your usual daily routines.

A Holter monitor is sometimes referred to as ambulatory electrocardiography or ambulatory ECG as it is performed out of the hospital. It is also known as a 24-hour ECG.

The device continuously records the electrical activity of your heart over time and during changing physical and emotional situations. Your doctor may ask you to keep notes or a diary of the times when you have symptoms.

Information from a Holter monitor is used to help diagnose abnormal heart rhythms and cardiac symptoms, such as palpitations, that come and go during the day and may not be picked up during a short ECG test.

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