Apparatus and method for identifying myocardial ischemia using analysis of high frequency QRS potentials

摘要

Detecting cardiac ischemia by detecting local changes in high frequency ECG parameters. Local changes may be, for example, local reduction in RMS of high frequency components, for example, during a stress test.

主权项

1. A method for analyzing ECG signals, comprising:
(a) providing at least one ECG signal recorded from a body; (b) having a computer determine the value of at least one time-varying parameter of a high frequency band of said ECG signal; and (c) having a computer generate an alert responsive to a decision algorithm comprising a set of rules involving a combination of:
an instant variation of the time-varying parameter value during a test, wherein said instant variation is a change in the parameter value in comparison to the parameter value at a short time before; andan analysis of a T-wave abnormality in at least one QRS complex in a low-frequency component of said ECG signal, wherein: said analysis of said low-frequency component of said ECG signal is performed in addition to any alignment of high frequency signals from said high frequency band of said ECG signal; and said alert comprises indicating ischemia.