Holter or event monitoring is a portable tracing technique used for patients whose heart conditions cannot be properly diagnosed through an EKG or other typical tests. These medical devices continuously record the electrical activity of the heart and are often used to diagnose causes of symptoms such as palpitations, lightheadedness and dizziness, loss of consciousness, skipped beats, arrhythmias or myocardial ischemia. Since an EKG only lasts for a few minutes, it may not detect any heart abnormalities if they are not present at that time.
Holter Monitor (24-hour heart monitor)
The Holter monitor is a simple non-invasive device worn for 24 hours and records the heart’s activity throughout that time. It monitors patient’s heart while the person goes about daily activities. This helps to detect arrhythmias that may only occur at certain times, such as after physical exertion. During that time, a diary of the activities and symptoms is kept. The diary is returned when the monitor is disconnected.
Loop Monitor/Event Monitor
This is a monitoring device that allows prolonged recording of a patient’s heart rhythm (weeks to months).