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Home > Health Library > Electrocardiogram (EKG) Components and Intervals
An electrocardiogram (EKG, ECG) is a test that measures the electrical signals that control heart rhythm. The test measures how electrical impulses move through the heart muscle as it contracts and relaxes.
The electrocardiogram translates the heart's electrical activity into line tracings on paper. The spikes and dips in the line tracings are called waves.
Current as ofJuly 22, 2018
Author: Healthwise StaffRakesh K. Pai, MD - Cardiology, ElectrophysiologyMartin J. Gabica, MD - Family MedicineAdam Husney, MD - Family MedicineGeorge J. Philippides, MD, FACC - Cardiology
Current as of:
July 22, 2018
Medical Review:Rakesh K. Pai, MD - Cardiology, Electrophysiology & Martin J. Gabica, MD - Family Medicine & Adam Husney, MD - Family Medicine & George J. Philippides, MD, FACC - Cardiology
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