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In the modern world, electrocardiography is a medical technology that is used every day in doctors' offices, clinics, and hospitals around the world. The technology grew out of investigations beginning in the late 18th century of electrical phenomena in living systems. Nerve and muscle are electrically active, and the heart produces currents and voltages that can be recorded in what is called the electrocardiogram (ECG). In the course of the 20th century, scientists and engineers elucidated the medical significance of ECGs, set standards for recording ECGs, and helped make the technology invaluable to medical practitioners.




References of Historical Significance

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