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How can an electrocardiogram (ECG) help in the diagnosis of heart disease?

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An electrocardiogram, or ECG, is usually the first test you'll have. By recording electrical activity within the heart, the ECG quickly reveals any electrical problems that may be causing trouble or may show that the heart muscle has been or is being injured by ischemia (lack of oxygen-rich blood).

SOURCES: 

Myers, R., , Firefly Books Ltd, 2004.  Heart Disease: Everything You Need to Know

Verheugt, F.; Tonkin, A., "Artherosclerosis and Heart Disease," Taylor & Francis Group; 1st edition, 2003. 

WebMD Medical reference: "Heart Disease."

Uptodate.com: “Patient information: High-fiber diet (Beyond the Basics),” Arnold Wald, MD.

Reviewed by James Beckerman on May 02, 2018

SOURCES: 

Myers, R., , Firefly Books Ltd, 2004.  Heart Disease: Everything You Need to Know

Verheugt, F.; Tonkin, A., "Artherosclerosis and Heart Disease," Taylor & Francis Group; 1st edition, 2003. 

WebMD Medical reference: "Heart Disease."

Uptodate.com: “Patient information: High-fiber diet (Beyond the Basics),” Arnold Wald, MD.

Reviewed by James Beckerman on May 02, 2018

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What tests are used to diagnose heart disease?

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