If a patient is experiencing palpitations or heart rhythm disturbances on a very infrequent basis, or if a 24-hour heart monitor has failed to pick up any abnormalities, our Cardiologists may suggest an extended period of heart monitoring. This increases the chance of documenting your heart rhythm at a time when you are experiencing symptoms. The monitor continuously records your heartbeat over a 7 day period. The event recorder is a small box which you wear around your neck (under your clothes) and is attached to 2 electrodes on your chest. It is a painless and non-intrusive investigation which will not interfere with your day to day activities.