Introducing the Holter monitor

The Holter monitor is a non invasive, small, wearable device that keeps track of your heart rhythm continuously over a period from one day to a few days. In that time, it will record every one of your heart beats. It is commonly used when an electrocardiograph (ECG) does not provide sufficient information for your doctor to understand what is happening with your heart. The information recorded by the machine will show any changes in your heart rhythm.

Holter monitors are commonly prescribed for people who have unexplained fainting or signs and symptoms of an arrhythmia (abnormal heart rhythm). The Holter monitor has more capacity to pick these up over an ECG as it runs over a longer period of time. They can also used if you have a medical condition that can lead to abnormal heart rhythms.

Some electronic equipment can interfere with the readings, so it is important to stay clear of magnets, microwave ovens, electric blankets, mobile phones, smart watches and the like while your monitoring is taking place. Additionally, it is important that the monitor and electrodes do not get wet. It is recommended that you shower before your appointment for this reason.

A nurse or other technician will place several electrodes on your chest. Men with particularly hairy chests may need to have some hair shaved so that the electrodes can stick properly. The machine will be placed in a small pocket which can hang around your neck and underneath your clothing. Once the monitor is all in place, you are free to go about your usual daily activities. You will be given written instructions, including an event diary where you can record your activities over the monitoring period, as well as any unusual symptoms.

Some machines have a button that you can press when you feel symptoms such as dizziness, shortness of breath, chest pain or skipped heartbeats. This will record the time of the event so that it can later be compared to the heart rhythm recorded at that particular time.

When you return to your doctor’s office, your doctor will assess the results and discuss them with you. The Holter monitor can help determine if you have a heart condition, and if your medications are working. In some cases, the monitor needs to be worn over a longer period of time for a diagnosis to be made. Holter monitors are regularly used by the specialists at Northern Specialist Suites. Should you have any questions, feel free to reach out to one of our friendly team for more information.