The present invention provides a sudden heart attack prevention method using an ECG. The method comprises the steps of: obtaining a digital ECG electrical signal; generating digital ECG (X, Y) pattern information by processing the digital ECG electrical signal; sensing whether the digital ECG (X, Y) pattern information deviates from a normal condition; when the digital ECG (X, Y) pattern information deviates from the normal condition, comparing the digital ECG (X, Y) pattern information with a defect symptom type; and when it is determined that the digital ECG (X, Y) pattern information is a heart attack presymptom, informing an acquaintance and a hospital of the digital ECG (X, Y) pattern information. According to a configuration of the present invention, when a sudden heart attack occurs, first-aid treatment can be performed without missing the so-called golden time.;COPYRIGHT KIPO 2017
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