https://www.heart.org/en/health-topics/heart-attack/diagnosing-a-heart-attack/electrocardiogram
Electrocardiogram (EKG or ECG) | American Heart Association
An electrocardiogram (EKG or ECG) is a test that measures the electrical activity of the heartbeat.
american heart associationelectrocardiogramekgecg
https://medlineplus.gov/lab-tests/electrocardiogram/
Electrocardiogram: MedlinePlus Medical Test
An electrocardiogram (EKG) is a test that measures electrical signals in your heart. An abnormal EKG can be a sign of a heart problem. Learn more.
electrocardiogrammedlineplusmedicaltest
https://www.medicare.gov/coverage/electrocardiogram-ekg-or-ecg-screenings
Electrocardiogram Screening Coverage
Do you need electrocardiogram screening coverage for EKG or ECG tests? Medicare can help pay costs for various heart diagnostic tests. Learn more.
electrocardiogramscreeningcoverage
https://www.medicinenet.com/electrocardiogram_ecg_or_ekg/article.htm
Electrocardiogram (ECG, EKG) Test Types, Results, Diagnosis
An electrocardiogram (ECG or EKG) is a painless, non invasive test that uses electrodes on the skin to measure these small electrical changes and produces a...
test typeselectrocardiogramecgekgresults