Event Monitor

A cardiac event monitor, also known as a loop recorder, is a small, portable device used to record the electrical activity of the heart (ECG) over an extended period of time, usually from a few days up to a month or more. Unlike a Holter monitor, which records the heart activity continuously, a cardiac event monitor is activated by the patient when they experience symptoms such as palpitations, dizziness, or fainting.
Fig 43 Event monitor
When the patient feels symptoms, they activate the monitor, which records the ECG data for a short period of time, usually a few minutes. The recorded data is then stored on the device or transmitted to a healthcare provider for analysis.
Cardiac event monitors are often used to help diagnose heart rhythm abnormalities, such as arrhythmias, that may occur infrequently and unpredictably (every few days to few weeks). They can also be used to evaluate the effectiveness of heart medications or treatments.
There are different types of cardiac event monitors, including those that are worn as a patch or attached to the patient’s chest with electrodes. The specific type of monitor used will depend on the patient’s individual needs and symptoms.
Like Holter monitors, cardiac event monitors are safe and non-invasive diagnostic tools, but they may be uncomfortable to wear for some people. There are various types of event monitors allowing your doctor to choose the right one to suit your needs and comfort. Patients should follow any instructions provided by their healthcare provider, such as avoiding showering or swimming during the monitoring period, to ensure accurate results.