SYSTEM AND METHOD FOR DISTINGUISHING A CARDIAC EVENT FROM NOISE IN AN ELECTROCARDIOGRAM (ECG) SIGNAL

摘要

A system includes an ambulatory medical device including: a digital signal processing module configured to: detect an abnormal rhythm from an electrocardiogram (ECG) signal of a patient and generate a first flag indicating an abnormal rhythm is detected; and a noise detector module configured to: receive the ECG signal and classify the abnormal rhythm as one of an arrhythmia event and a noise event; and, if classified as a noise event, initiate a preconfirmation period during which the noise detector module continues to evaluate the abnormal rhythm and classify the abnormal rhythm as one of an arrhythmia event and a noise event; and generate a second flag indicating the start of the preconfirmation period; and a server configured to: receive the ECG signal, the first flag indicating the abnormal rhythm, and the second flag indicating the start of the preconfirmation period; and provide a visual indication of the preconfirmation period.