These devices record your heart rhythm. Holter Monitors record for 24 hours, while Event Monitors can be worn for longer periods (2 weeks to a month) and each event is recorded at the push of a button.
These type of devices are worn to detect the heart rhythm during day and night activities and at rest. You are given a diary to log symptoms or activities that you are doing at the time of the event which will help your physician treat your condition.
These monitors are hooked up to the patient in the office or hospital setting by placing sticky patches over the chest area with electrodes that are connected to the device which can be worn on your side that records your rhythms. The events that are recorded can be transmitted over the phone to your physicians office in order for him/her to monitor your events.