SYSTEM AND METHOD FOR DETECTING AN ARRHYTHMIC CARDIAC EVENT FROM A CARDIAC SIGNAL

摘要

What is disclosed is a system and method for detecting an arrhythmic or non-arrhythmic event from a cardiac signal obtained from a subject. In one embodiment, a plurality of different cardiac signals are received and are transformed into frequency domain signals which, in turn, are changed such that a dominant frequency in each of the signals is substantially aligned to form a matrix of feature vectors. The feature matrix is used to train a classifier. A cardiac signal from the subject is received and transformed to a frequency domain signal. The frequency domain signal is changed such that a dominant is substantially aligned with a dominant frequency of signals used to train the classifier. The subject's frequency domain signal is provided as a new feature vector to the classifier. The classifier uses the new feature vector to classify the subject as having an arrhythmic or a non-arrhythmic event.

主权项

1. A method for detecting a cardiac event from a cardiac signal of a subject, the method comprising:
receiving a plurality of different cardiac signals; transforming each of said cardiac signals to frequency domain signals; changing said frequency domain signals such that a dominant frequency in each of said signals are substantially aligned to form a matrix of feature vectors; training a classifier with said matrix of feature vectors; receiving a cardiac signal of a subject; transforming said subject's cardiac signal to a frequency domain signal; changing said subject's frequency domain signal such that a dominant frequency in said signal is substantially aligned with said dominant frequency of said signals used to train said classifier; and providing said subject's frequency domain signal as a new feature vector to said classifier, said classifier using said new feature vector to classify said subject as having one of: an arrhythmic event, and a non-arrhythmic event.