| QT dispersion within the first 6 months after an acute myocardial infarction: relationship with systolic function, left ventricular volumes, infarct related artery status and clinical outcome. | |
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MedLine Citation:
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PMID: 11532545 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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INTRODUCTION: We analysed QT dispersion within the first 6 months postinfarction, its relationship with the main established risk stratifiers and its clinical value. METHODS AND RESULTS: In 55 patients with a first Q-wave myocardial infarction the 12-lead electrocardiogram was scanned and digitised for analysis of QT dispersion (QT maximum-QT minimum) at first day (72 [61-96] ms), first week (69 [47-90] ms), first month (67 [46-88] ms) and sixth month (47 [40-74] ms; P<0.0001 vs. first day). Cardiac catheterization was performed at first week and at sixth month; QT dispersion was not related to ejection fraction, left ventricular volumes, infarct related artery status or contractile reserve (improvement of the infarcted area with low-dose dobutamine); no relation was found between QT dispersion decrease from first week to sixth month with regional systolic function improvement. Finally, during a mean follow-up period of 35+/-22 months QT dispersion was not independently related to clinical events. CONCLUSION: QT dispersion decreases progressively during the first months after myocardial infarction. These changes should be taken into account to define cut-off values of clinical interest in this phase. This variable does not seem related to the classic prognosis predictors. In a nonselected postinfarction population it has a low clinical value. |
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Authors:
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V Bodí; J Sanchis; A Navarro; E Plancha; F J Chorro; A Berenguer; L Insa; P Escriche; F Cabadés; A Llácer |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of cardiology Volume: 80 ISSN: 0167-5273 ISO Abbreviation: Int. J. Cardiol. Publication Date: 2001 Aug |
Date Detail:
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Created Date: 2001-09-04 Completed Date: 2001-10-25 Revised Date: 2006-07-12 |
Medline Journal Info:
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Nlm Unique ID: 8200291 Medline TA: Int J Cardiol Country: Ireland |
Other Details:
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Languages: eng Pagination: 37-45 Citation Subset: IM |
Affiliation:
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Cardiology Unit, Internal Medicine Department, Hospital Comarcal. Avda. Gil de Atroncillo s/n. 12500, Vinaròs, Spain. vicentbodi@hotmail.com |
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| MeSH Terms | |
Descriptor/Qualifier:
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Coronary Vessels
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physiopathology Electrocardiography Female Heart Conduction System / physiopathology* Humans Male Middle Aged Multivariate Analysis Myocardial Infarction / diagnosis, mortality, physiopathology* Prognosis Prospective Studies Regression Analysis Risk Spain / epidemiology Survival Analysis Systole Ventricular Function, Left |
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