ECG, Holter and Event Monitoring
Electrocardiogram (ECG)
An electrocardiogram is a nonivasive test that records the electrical activity of the heart. Electrodes are placed on your limbs and chest that detect the electrical signals from different parts of the heart muscle. A machine records the signals on graph paper for interpretation by the cardiologist. The electrocardiogram measures heart rate, heart rhythm and may show a number of heart problems including damaged heart muscle caused by a heart attack.
Holter Monitoring
These digital monitors allow for continuous ambulatory monitoring of your heart rate and rhythm up to 24 hours. Physicians will order a Holter monitor to evaluate for heart rhythm disorders or assessment of symptoms (palpitations, syncope, dizziness, shortness of breath or chest pain) that may be related to a rhythm disturbance of the heart. A cardiac electrophysiologist from the EP subsection interprets all Holters and event monitors ordered through St. Paul Heart Clinic.
Event Monitoring
In order to capture less frequent or rare heart rate and rhythm disturbances, event monitoring may be indicated. These "memory" monitors are worn up to 30 days to increase the likelihood of recording critical intermittent heart rate and rhythm abnormalities. These recorders can also provide transmission of ECG data to a centralized facility 7 days a week, 24 hours a day for analysis.
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