electrocardiogram (ECG or EKG)
Holter (Ambulatory) Monitoring. The Holter Monitor is a small, ambulatory, portable ECG machine that provides the following information:
- The heart’s rhythm over a 24-hour period, during normal activities, or recording gets triggered by the patient when a specific event occurs.
- Correlate any symptoms (chest pain, palpitations, etc) the patient experiences with the heart’s electrical activity at that time.
- Record any abnormal heart rhythms (arrhythmias) that occur, providing diagnostic information about the type of arrhythmia, how long it lasts, and possible triggers.
- Determine how well anti-arrhythmia medicines are working.
The Holter Monitor is worn over a 24-hour period while the patient does all of his or her normal activities. Small, sticky patches called electrodes are attached to the chest. Wires travel from the electrodes to a small portable box worn on a belt or shoulder strap. The box records and stores continuous heart rhythm data transmitted by the electrodes. The patient keeps a diary of activities and of any symptoms that occur while the Monitor is in place. This will allow the doctor to correlate activities with symptoms with the heart’s electrical rhythm at a specific point in time.