| Estimation of anterior infarct size with body surface QRST integral maps in the presence of abnormal ventricular activation sequence in dogs. | |
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MedLine Citation:
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PMID: 8427119 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The possibility of estimating infarct size with body surface QRST integral (IQRST) maps was investigated in dogs. IQRST maps were constructed from 87-lead body surface ECGs, which were recorded 1 week after the production of anterior myocardial infarction during artificial pacing that simulated normal conduction, left bundle branch block, and Wolff-Parkinson-White syndrome in 11 dogs. Small differences were observed between the IQRST maps of the normal conduction and left bundle branch block models (r = 0.93, root mean square difference = 8.71 mVmsec) and between the normal conduction and Wolff-Parkinson-White models (r = 0.96, root mean square difference = 6.03 mVmsec). Summation of the QRST integral values over the body surface leads (QRST index) inversely correlated with infarct size in all three conductions models: r = 0.91 (p < 0.001) in the normal conduction model; r = -0.81 (p < 0.001) in the left bundle branch block model; and r = -0.86 (p < 0.001) in the Wolff-Parkinson-White model. These results show that IQRST maps permit noninvasive estimation of infarct size, even in the presence of abnormal activation sequences. |
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Authors:
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Y Ichihara; M Hirai; H Hayashi; Y Tomita; M Adachi; A Suzuki; M Tsuda; M Nagasaka; H Saito |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: American heart journal Volume: 125 ISSN: 0002-8703 ISO Abbreviation: Am. Heart J. Publication Date: 1993 Feb |
Date Detail:
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Created Date: 1993-03-04 Completed Date: 1993-03-04 Revised Date: 2006-02-27 |
Medline Journal Info:
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Nlm Unique ID: 0370465 Medline TA: Am Heart J Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 291-300 Citation Subset: AIM; IM |
Affiliation:
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First Department of Internal Medicine, Nagoya University School of Medicine, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Bundle-Branch Block / complications, physiopathology* Dogs Electrocardiography* Myocardial Infarction / complications, pathology*, physiopathology* Myocardium / pathology Sensitivity and Specificity Wolff-Parkinson-White Syndrome / complications, physiopathology* |
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