Document Detail


Accuracy of electrocardiographic-gated versus nongated volumetric intravascular ultrasound measurements of coronary arterial narrowing.
MedLine Citation:
PMID:  17223434     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Intravascular ultrasound (IVUS) allows precise measurements of plaque plus media (P+M) volume and neointimal hyperplasia after coronary artery stenting. Conventional IVUS volumetric analysis is performed mostly without electrocardiographically gated acquisition, and the IVUS images are selected at 1-mm intervals, whereas the electrocardiographically gated approach consists of images in end-diastole. The accuracy in the luminal, P+M, and external elastic membrane (EEM) volumes between 2 pullbacks with the electrocardiographically gated and nongated approaches has not previously been compared. In 15 patients, 19 segments were studied with electrocardiographically gated and nongated IVUS systems. Two identical pullbacks were performed with each system using the same IVUS catheter. Volumes of the lumen, EEM, and P+M obtained using the electrocardiographically gated pullback technique did not differ significantly from the corresponding volumes obtained using the nongated pullback technique (lumen: 109.7 +/- 47.7 vs 109.2 +/- 45.0 mm(3), p = NS; EEM: 242.6 +/- 109.2 vs 235.0 +/- 108.1 mm(3), p = NS; P+M: 134.8 +/- 67.7 vs 129.8 +/- 69.1 mm(3), p = NS). No significant differences were seen in changes between 2 electrocardiographically gated and 2 nongated pullbacks (lumen: 0.37 +/- 1.76 vs -0.23 +/- 2.32 mm(3), p = NS; EEM: 0.25 +/- 3.22 vs -0.94 +/- 4.27 mm(3), p = NS; P+M: -0.18 +/- 3.42 vs -0.74 +/- 3.88 mm(3), p = NS). In conclusion, in moderate atherosclerotic or stented coronary arteries, electrocardiographically gated IVUS acquisition is not superior in accuracy to conventional nongated IVUS acquisition.
Authors:
Lisette Okkels Jensen; Per Thayssen
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Publication Detail:
Type:  Journal Article     Date:  2006-11-27
Journal Detail:
Title:  The American journal of cardiology     Volume:  99     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2007-01-15     Completed Date:  2007-02-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  279-83     Citation Subset:  AIM; IM    
Affiliation:
Department of Cardiology, Odense University Hospital, Odense, Denmark. okkels@dadlnet.dk
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MeSH Terms
Descriptor/Qualifier:
Coronary Stenosis / physiopathology,  ultrasonography*
Coronary Vessels / physiopathology,  ultrasonography*
Elasticity
Electrocardiography / methods*
Female
Humans
Male
Middle Aged
Reproducibility of Results
Severity of Illness Index
Ultrasonography, Interventional / methods*
Vasodilation / physiology*

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


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