
Get answers to your heart disease prevention questions.
Dr. Miller’s Bio | Q&A Archive
ECG; EKG
There are generally no risks. An ECG only monitors the heart's electrical activity. No electricity is sent through the body, so there is no risk of shock.
The accuracy of the ECG depends on the condition being tested. Some heart conditions are not detectable all the time, and others may never produce any specific ECG changes.
A person who has had a heart attack or who may have heart disease may need more than one ECG. There is no reason for healthy people to undergo annual testing unless they have a family history of heart disease or another medical condition.