Detection of regional perfusion abnormalities during adenosine stress echocardiography with intravenous perfluorocarbon-exposed sonicated dextrose albumin

T. R. Porter, A. Kricsfeld, U. Deligonul, F. Xie

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Although perfluorocarbon-exposed sonicated dextrose albumin (PESDA) microbubbles produce myocardial contrast after intravenous injection, it is unknown whether their use can accurately identify myocardial blood-flow abnormalities during stress echocardiography. Accordingly, we compared the background-subtracted peak myocardial videointensity (PMVI) after intravenous injections of PESDA before and during adenosine stress (100 to 140 units/kg/min) in 10 open-chest dogs with angiographically significant left circumflex artery disease. The ratios of PMVI in the ischemic region compared with the adjacent normal left anterior descending perfusion bed were measured, as were wall-thickening and coronary-flow ratios. In the dogs with a >50% diameter stenosis, there was a decrease in PMVI ratio during adenosine stress by >0.20 in 9, whereas wall-thickening ratios decreased in only 5. PMVI in the ischemic zone increased by <1.5 units during adenosine infusion in 8 of 10 dogs, whereas it increased by >1.5 units in 8 of 10 adjacent normal zones. We conclude that regional myocardial-perfusion abnormalities can be detected with intravenous PESDA during adenosine stress echocardiography.

Original languageEnglish (US)
Pages (from-to)41-47
Number of pages7
JournalAmerican Heart Journal
Volume132
Issue number1 I
DOIs
StatePublished - 1996

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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