Electrocardiography (ECG) is a transthoracic (across the thorax or chest) interpretation of the electrical activity of the heart over a period of time, as detected by electrodes attached to the ...
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A Guide to Electrocardiogram (EKG) Testing: What to ExpectThese electrodes are connected to wires that lead to the EKG machine. Recording: You'll lie still while the machine records ...
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