Method and system for extracting ventricular fibrillation signals in electrocardiogram

摘要

This invention discloses a system and method for extracting VF signal in ECG recorded during uninterrupted CPR. The method and system applies an adaptive algorithm incorporating the EMD and least mean square (LMS) filtering to effectively model the CPR artifacts such as chest compression signals. Thus, A VF signal in ECG recorded during uninterrupted CPR can be extracted without deteriorating the reliability of the waveform parameter (i.e. AMSA) of shockability. The present invention enables uninterrupted CPR performed during recording ECG for accessing the shockability, so that an increase the probability of successful resuscitation is achieved.

主权项

1. A method for extracting a Ventricular Fibrillation (VF) signal in Electrocardiography (ECG), comprising:
receiving an ECG signal; decomposing the ECG signal by using an Empirical Mode Decomposition (EMD) method to generate a plurality of Intrinsic Mode Functions (IMFs); combining some IMFs with the same property to obtain a shape function; correcting errors for each cycle of the shape function to obtain a compression signal; and subtracting the compression signal from the ECG signal to obtain the VF signal.