An event recorder is a small device that tracks your heart’s electrical activity. An event recorder monitors your heart’s electrical activity for an extended period of time – usually from a week to a month or more. The recorder is always on, but it saves your heart rhythms into its memory only when you push a button. Many recorders save recordings of your heart rhythms for 30-60 seconds both before and after you push the button.
An event recorder can help your doctor find out if you have abnormal heart rhythms, or arrhythmias. Arrhythmias might happen rarely, yet it is still important for your doctor to know about them and to treat them.