Alternate Names : Electrocardiography, Ambulatory, Ambulatory Electrocardiography
Holter monitoring is continuous recording of the electrical activity of the heart.
Who is a candidate for the test?
The test is usually done on a person who has had an abnormal heart rhythm, or arrhythmia. It can also be used to observe the effects of heart medicines. It is used to monitor heart activity after a heart attack.
How is the test performed?
A Holter monitor is a portable electrocardiogram device. It continually records a person's heart activity. The monitor is worn during a day and night of normal activities. To perform the test, small electrodes from the monitor are attached to the chest. The person carries the device in a pocket or a pouch. The individual also keeps a diary of activities and symptoms during the monitoring period. When the 24-hour heart recording and diary are complete, the doctor will compare the events of the day to the heart's activities. The doctor will try to match abnormalities on the heart recording with entries in the diary. Computers are also used to look for heartbeat irregularities in the recording.