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24-hour Holter monitoring

The Holter monitor records electrical signals from the heart. The device records your heart’s rate and rhythm for 24 hours. Because the Holter monitor records your heart rate continuously, irregularities in your heart rhythm can be detected.

The test

Seven electrodes will be taped to your body. You will also be given a small recording device about the size of a mobile phone. You wear this device on a belt around your waist. The electrodes are connected by leads to the recorder. You will wear the recorder for 24 consecutive hours.

The device will record your heart rhythm. You will be asked to keep a diary of everything you do in these 24 hours and note whether you have experienced any symptoms. This diary will help the cardiologist to identify what caused the symptoms.

You are not allowed to swim or have a bath or shower while wearing the Holter. If an electrode or lead comes loose, please reattach it as soon as possible. Don’t forget to note this in your diary.

After 24 hours, you can disconnect the recorder and remove tahe electrodes from your body. You can then return the recorder, the leads and the diary to the center. We recommend wearing clothing with a high neck while taking this test so that the electrodes are not visible.

Duration of the test

Connecting the Holter takes about 15 minutes. Your heart rhythm is then recorded for 24 hours.