ECG 24 hour holter monitor tests

If you have experienced symptoms such as heart palpitations, dizziness, chest pain or shortness of breath your doctor may ask you to undergo an ECG 24-hour Holter monitor test. The ECG monitor will record your heart rate and rhythm over a 24-hour period while you go about your normal daily activities. A specialist will then take the data from the monitor, analyse it, and produce a report for your doctor.

holter monitor What is an ECG holter monitor? The ECG holter monitor is a small machine that will record your heart rhythm continuously over a 24-hour period.  The ECG monitor will be fitted on the day of your appointment – this will take about 15 minutes.

Five electrodes (small sticky pads) will be stuck to your chest and then connected to the monitor via wires. The monitor is quite small and will sit neatly around your waist or hang comfortably round your neck. If you have any questions during the procedure, please ask.

The test is completely painless and it is important that you wear the monitor throughout the day and night. It is also important that you do not get the monitor wet so please do not have a bath or shower while wearing it. Other than this please try to follow your normal routine, including sporting activities. If you feel any of your symptoms while wearing the holter monitor PRESS the blue event button located on the side of the recorder.

To avoid any chance of interference to the ECG recording, please do not:

• get the recorder wet,

• sleep with an electric blanket switched on,

• adjust the monitor or remove any electrodes.


You will be asked to return to Lime Radiology to have the monitor taken off at the same time the next day. Please make sure you follow the instructions about returning your monitor as other patients may have their ECG holter monitoring test cancelled if you do not return the monitor when asked to do so.