Document Detail

Computerized analysis of myocardial echocardiographic enhancement during coronary revascularization by high-speed rotational atherectomy.
MedLine Citation:
PMID:  10627364     Owner:  NLM     Status:  MEDLINE    
A previous report demonstrated transient myocardial echocardiographic contrast (MEC) enhancement following high-speed rotational atherectomy (HSRA). This phenomenon was found to be correlated to the speed and duration of rotation and related to creation of cavitations. To determine other correlations and the significance of MEC, continuous echocardiographic recording was performed in 10 patients undergoing HSRA. Images were digitized and videointensity-time curves generated. Curve parameters were calculated and correlated with procedural variables, plaque mass, and side effects. Twenty-nine ablation passes in 10 patients were analyzed. Videointensity peaked 9-44 sec from initiation of ablation and decayed to a higher baseline level after each consecutive ablation. Increase in peak contrast intensity (PCI) from baseline and the percentage of the left ventricle undergoing enhancement were highest (33 +/- 31 gray level/pixel and 32% +/- 8%, mean +/- SD, respectively) after the second rotation and were not influenced by the duration of rotation. PCI, side effects, and transient left ventricular wall motion abnormalities were positively correlated with plaque mass, defined by the product of lesion length, diameter, and percent stenosis. HSRA resulted in significant myocardial echocardiographic contrast. PCI is related to ablation sequence and plaque mass. Plaque debris embolization is probably responsible for myocardial echocardiographic contrast and transient wall motion abnormalities. Cathet. Cardiovasc. Intervent. 49:39-44, 2000.
S Carasso; R Beyar; W Markiewicz; S A Reisner
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions     Volume:  49     ISSN:  1522-1946     ISO Abbreviation:  Catheter Cardiovasc Interv     Publication Date:  2000 Jan 
Date Detail:
Created Date:  2000-02-03     Completed Date:  2000-02-03     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100884139     Medline TA:  Catheter Cardiovasc Interv     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  39-44     Citation Subset:  IM    
Copyright Information:
Copyright 2000 Wiley-Liss, Inc.
Department of Medicine A, Rambam Medical Center, Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel.
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MeSH Terms
Atherectomy, Coronary*
Coronary Angiography
Coronary Disease / radiography,  therapy,  ultrasonography
Image Processing, Computer-Assisted
Middle Aged

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