ECG trace during exercise. This is a readout of the electrical activity of the heart measured by an electrocardiography (ECG) machine. Each peak represents a heartbeat and corresponds to the electrical impulses that precede the contraction of the heart muscle. ECG is used to monitor the health of the heart and to diagnose disorders such as arrhythmia, coronary artery disease and cardiac asthma.

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TOP10215023

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達志影像

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RM

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