Document Detail

Effect of coronary artery bypass grafting and aneurysmectomy on QT dispersion in moderate or severe left ventricular dysfunction.
MedLine Citation:
PMID:  15894977     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The aim of the study was to evaluate the effect that coronary artery bypass grafting (CABG) and aneurysmectomy in the same session have on QT dispersion (QTd) in moderate or severe left ventricular dysfunction. METHODS: Forty-four patients underwent QT interval analyses before and 1 month after aneurysmectomy and CABG. QT interval and QTd were corrected for heart rate using the square root formula of Bazett (QTCB), the cubic root formula of Fridericia (QTCF), and the linear formula of Sagie et al (QT CS ). RESULTS: The mean pre- and postsurgery QTd results were 65.29 +/- 29.25 and 51.76 +/- 18.49 milliseconds, respectively; the corresponding findings for QT CF were 68.06 +/- 31.26 and 55.16 +/- 24.56 milliseconds; and the corresponding findings for QT CS were 66.53 +/- 32.22 and 51.10 +/- 18.29 milliseconds. With these 3 methods, the postoperative findings were significantly lower than the preoperative findings ( P < .05 for all). In contrast, the opposite was true with the QT CB method (preoperative 71.1 +/- 65.80 vs postoperative 76.43 +/- 7.96 milliseconds, P < .05). CONCLUSION: The study showed that based on the methods of Fridericia (QT CF ) and Sagie et al (QT CS ), QT intervals are significantly decreased after CABG and aneurysmectomy.
Oner Gulcan; Alpay T Sezgin; Senol Demircan; Hakan Atalay; Riza Turkoz
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American heart journal     Volume:  149     ISSN:  1097-6744     ISO Abbreviation:  Am. Heart J.     Publication Date:  2005 May 
Date Detail:
Created Date:  2005-05-16     Completed Date:  2005-12-21     Revised Date:  2006-02-27    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  United States    
Other Details:
Languages:  eng     Pagination:  917-20     Citation Subset:  AIM; IM    
Department of Cardiovascular Surgery, Adana Teaching and Medical Research Center, Baskent University, Adana, Turkey.
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MeSH Terms
Coronary Artery Bypass*
Heart Aneurysm / surgery*
Middle Aged
Ventricular Dysfunction, Left / physiopathology*,  surgery*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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