The ECG is the graphical representation of the electrical potentials generated in the heart. The signals are detected by electrodes and then amplified and recorded by the electrocardiograph.This ECG is inexpensive, very easy to use and non-invasive test. It can detect the conduction disturbances, myocardial infection, infraction, atrial and ventricular hypertrophy of the heart. In addition to that ECG can also detect the electrolyte disturbance and effects of drugs on the heart.
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