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In page Cardiomegaly:
"
- Electrocardiogram: This test records the electrical activity of the heart through electrodes attached to the skin. Impulses are recorded as waves and displayed on a monitor or printed on paper. This test helps diagnose heart rhythm problems and assess the damage to a person's heart from a heart attack.[6]
- Echocardiogram: This test uses sound waves to produce a video image of the heart. With this test, the four chambers of the heart can be evaluated.[citation needed]
- Stress test: A stress test, also called an exercise stress test, provides information about how well the heart works during physical activity. It usually involves walking on a treadmill or riding a stationary bike while heart rhythm, blood pressure, and breathing are monitored.[citation needed]
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