Ambulatory Rhythm Monitoring
A Holter monitor is a small, portable device that continuously records the heart’s rhythms and records the electrical activity of the heart. A Holter monitor may be used to capture information and check an individual’s heart rhythm if results of other tests, such as an electrocardiogram (EKG), have been inconclusive. The monitor is worn for 24 to 48 hours during normal activity, and it it records the heart’s electrical activity during that time period. Because patients are only hooked up to an EKG machine for a short time, it may not detect any irregularities in the heart rhythm. If symptoms suggest that an individual may be experiencing an irregular heart rhythm, a doctor may recommend wearing a Holter monitor for one to two days. Over that time, the Holter monitor may be able to detect irregularities in the heart rhythm that an electrocardiogram was unable to detect. A Holter monitor may also be used to monitor heart rate after a heart attack or to monitor the effectiveness of new heart medication.