[en] To investigate the suitability of diagnostic 6F catheters for coronary angiographic measures in the clinical setting, we determined the relative accuracy and reproducibility of the measures obtained with these catheters as scaling devices in 59 stenoses. Comparison was made with duplicate injections, obtained before angioplasty, using an 8F guiding catheter as scaling device. Intra- and interobserver variability was evaluated in 15 stenoses. The coefficient of variation averaged 18.3% for the minimal lumen diameter, 10.4% for the percent stenosis, and only 7.4% for the reference diameter. Reproducibility of angiographic measures done with the 6F catheter was similar to that obtained with the 8F catheter, although accuracy was lower with the 6F for the measurement of reference diameter. Thus, quantitative coronary angiography (QCA) measures derived from routine diagnostic angiograms may be suitable for determination of reference diameter, allowing enough precision for determination of the size of a coronary device for intervention, but these measures may lack accuracy for precise determination of minimum diameter and percent stenosis, making their use questionable in studies looking at individual changes in coronary stenosis dimensions.
Disciplines :
Cardiovascular & respiratory systems
Author, co-author :
Legrand, Victor ; Université de Liège - ULiège > Département des sciences cliniques > Cardiologie
Raskinet, B.
Martinez, Christophe ; Centre Hospitalier Universitaire de Liège - CHU > Cardiologie
Kulbertus, Henri ; Université de Liège - ULiège > Services généraux (Faculté de médecine) > Relations académiques et scientifiques (Médecine)
Language :
English
Title :
Variability in Estimation of Coronary Dimensions from 6f and 8f Catheters
Publication date :
January 1996
Journal title :
Catheterization and Cardiovascular Diagnosis
ISSN :
0098-6569
Publisher :
John Wiley & Sons, Hoboken, United States - New York
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