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Home >Information for Patients > Dictionary Index
Dictionary of Cancer Terms
View in Spanish: Electrocardiograma
Electrocardiogram (ee-LEK-troh-KAR-dee-oh-gram)
A line graph that shows changes in the electrical activity of the heart over time. It is made by an instrument called an electrocardiograph. The graph can show that there are abnormal conditions, such as blocked arteries, changes in electrolytes (particles with electrical charges), and changes in the way electrical currents pass through the heart tissue. Also called ECG and EKG.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.
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22 S. Greene Street, Baltimore, MD 21201
22 S. Greene Street, Baltimore, MD 21201
