Document Detail

Sensitivity of epicardial electrical markers to acute ischemia detection.
MedLine Citation:
PMID:  25242529     Owner:  NLM     Status:  In-Data-Review    
INTRODUCTION: We hypothesize that electrocardiographic measurements from the intramyocardial space contain more sensitive markers of ischemia than those detectable on the epicardium. The goal of this study was to evaluate different electrical markers for their potential to detect the earliest phases of acute myocardial ischemia.
METHODS: We conducted acute ischemia studies in open chest animal, by creating finely controlled demand or supply ischemic episodes and recording intramyocardial and epicardial potentials.
RESULTS: Under the conditions of mild perfusion deficit, acute ischemia induced changes in the T wave that were larger and could be detected earlier on the epicardial surface than ST-segment changes.
CONCLUSIONS: Our findings indicate that in the setting of very acute ischemia, epicardial T waves have higher sensitivity to mild degrees of acute ischemia than epicardial ST potentials. These results suggest that changes in the T wave shape may augment shifts in ST segments to improve ECG based localization of ischemia.
Kedar Aras; Brett Burton; Darrell Swenson; Rob MacLeod
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Publication Detail:
Type:  Journal Article     Date:  2014-08-17
Journal Detail:
Title:  Journal of electrocardiology     Volume:  47     ISSN:  1532-8430     ISO Abbreviation:  J Electrocardiol     Publication Date:    2014 Nov-Dec
Date Detail:
Created Date:  2014-12-02     Completed Date:  -     Revised Date:  2014-12-04    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  836-41     Citation Subset:  IM    
Copyright Information:
Copyright © 2014 Elsevier Inc. All rights reserved.
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