Document Detail

Quantitative contrast stress echocardiography in assessment of restenosis after percutaneous coronary intervention in stable coronary artery disease.
MedLine Citation:
PMID:  19549699     Owner:  NLM     Status:  MEDLINE    
AIMS: Quantitative contrast stress echocardiography (CSE) can assess regional myocardial perfusion. The aim of this study was to evaluate the performance of quantitative CSE in the detection of restenosis after percutaneous coronary intervention (PCI). METHODS AND RESULTS: Thirty-three patients with stable coronary artery disease, scheduled for PCI, underwent CSE and quantitative coronary angiography (QCA) before and 9 months after PCI. Regional myocardial perfusion was analysed blinded to QCA results. QCA identified 38 significant stenoses (> or =50% diameter reduction). Before PCI, perfusion during stress was significantly reduced in regions supplied by stenotic arteries; blood flow velocity (Deltabeta) -3.9 (-9.0 to 0.5) s(-1), perfusion rate (DeltaA x beta) -175.0 (-518.0 to 58.5) s(-1), and refilling time (Deltart) 210 (-22 to 452)ms, compared with the perfusion increase seen in regions supplied by non-stenotic arteries; Deltabeta 1.6 (-0.7 to 4.4) s(-1), DeltaA x beta 151.7 (-67.0 to 300.5) s(-1), and Deltart -47 (-195 to 89) ms, all P < 0.05. At follow-up, regional stress-induced perfusion improved in 29 regions with successful PCI; Deltabeta 0.1 (-2.7 to 3.6), DeltaA x beta 30.5 (-133.3 to 232.1), and Deltart -99 (-247 to 125), all P < or = 0.01, although there was no improvement in nine regions with restenosis; Deltabeta 0.9 (-1.5 to 5.3), DeltaAxbeta 65.7 (-40.8 to 412.6), and Deltart -79 (-268 to 163), P = NS. CONCLUSION: Quantitative CSE has the potential to detect angiographically significant coronary artery stenoses as well as angiographic success after PCI.
Mai Tone L??nnebakken; Eva M Staal; ??yvind Bleie; Elin Strand; Ottar K Nyg??rd; Eva Gerdts
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Publication Detail:
Type:  Journal Article     Date:  2009-06-23
Journal Detail:
Title:  European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology     Volume:  10     ISSN:  1532-2114     ISO Abbreviation:  Eur J Echocardiogr     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-10-13     Completed Date:  2009-12-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100890618     Medline TA:  Eur J Echocardiogr     Country:  England    
Other Details:
Languages:  eng     Pagination:  858-64     Citation Subset:  IM    
Department of Heart Disease, Institute of Medicine, Haukeland University Hospital, University of Bergen, Bergen 5021, Norway.
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MeSH Terms
Angioplasty, Transluminal, Percutaneous Coronary
Coronary Circulation
Coronary Restenosis / therapy*,  ultrasonography*
Disease Progression
Echocardiography, Stress
Middle Aged

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