24-48 hour tape

Ambulatory cardiac monitoring is performed on people suspected of having an irregular heartbeat. The test records your heartbeat. If the test identifies an abnormal rhythm, your cardiologist may prescribe appropriate medication or other course of action to help treat you.

The test involves attaching electrodes to your chest. These electrodes are connected by leads to a small lightweight recorder. Your heartbeat will be recorded for as long as your doctor has asked (usually 24 or 48 hours). It will take about 20 minutes for the electrodes and recorder to be fitted. It will take just a few minutes to have the electrodes removed on the final day.

Below is a picture of a 24-48 hour tape.

The technician attaching the electrodes will give you a diary for you record any symptoms that you have (for example, dizziness, palpitations). It is important that you record the time of the symptoms (from the clock on the recorder).

When you have had your recorder fitted, you can go home, or to work, and carry out your normal daily activities, including driving. You should wear the recorder all the time, including when you are sleeping. During this time you should not have a bath or shower. You can wash, but do not get the electrodes wet.

The technician cannot give you any results at this stage as the recording has to be given to a doctor for them to consider. The results are recorded in your case notes for your next outpatient appointment.