Patent ID: 8265739
Filing Date: 2012-09-11
Classification: A61B

Abstract:
1. A method, for use with an implantable medical device, for distinguishing cardiac ischemia from other conditions affecting a morphology of electrical cardiac signals sensed within a patient in which the device is implanted, the method comprising: monitoring electrical cardiac signals from a plurality of spatially-distinct locations within a heart of the patient; detecting changes in morphological features of the electrical cardiac signals indicative of possible cardiac ischemia within the patient; determining whether the changes in the morphological features are the result of spatially localized changes within a portion of the heart by: determining that the changes in morphological features of the electrical cardiac signals indicate cardiac ischemia if the changes are determined to be local; and determining that the changes in morphological features of the electrical cardiac signals indicate systemic influences if the changes are determined to be global.