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Multichannel electrocardiographs (ECGs) designed for recording the variations of the electric potential caused by the electrical activity of the heart muscle, usually detected at the body surface from two or more leads simultaneously that cannot perform any interpretation of the results. The instrument usually records ECG signals automatically which allows for a simultaneous diagnosis of several cardiac signals. Instruments that can perform the measuring of the ECGs by averaging multiple cycles of the signal are also available. Non-interpretative multichannel ECGs are used to diagnose cardiac abnormalities, determine the response to drug therapy, and reveal trends or changes in the heart function. The electrocardiographs are not intended for a real-time assessment of the electrocardiogram or other cardiac conditions.
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