Ambulatory electrocardiogram

What happens during a Holter monitor test?Minimise description of What happens during a Holter monitor test?You'll need to wear a medical device called a Holter monitor continuously for a period of 24 hours, 48 hours or seven days. You'll have three electrodes attached to your chest with small sticky pads and wires . These wires are connected to the monitor, which is about the size of a matchbox and worn around your waist or on a cord that hangs around your neck.

The monitor captures every single electrical impulse in your heart while it's worn. If you need to have a bath or shower, you simply remove the monitor and pads then replace them after. You'll be asked to complete a diary telling us if you have any symptoms such as palpitations or dizziness.

You won't need to prepare for this test. Your consultant will explain how the test works and answer any questions you may have. The monitor will be set up for you at one of our cardiac units, and the cardiac physiologists will talk you through the monitor.

Your consultant will analyse the results of your recording, explain the results, and let you know any next steps.