DIAMETER OF LARGE BALLOONS USED IN ENDOLUMINAL GRAFT DEPLOYMENT VARIES WITH INFLATION PRESSURE

Citation
X. Chaufour et al., DIAMETER OF LARGE BALLOONS USED IN ENDOLUMINAL GRAFT DEPLOYMENT VARIES WITH INFLATION PRESSURE, Journal of endovascular surgery, 5(2), 1998, pp. 113-119
Citations number
11
Categorie Soggetti
Surgery,"Peripheal Vascular Diseas
ISSN journal
10746218
Volume
5
Issue
2
Year of publication
1998
Pages
113 - 119
Database
ISI
SICI code
1074-6218(1998)5:2<113:DOLBUI>2.0.ZU;2-E
Abstract
Purpose: To evaluate the characteristics of large-diameter balloon cat heters used during endoluminal repair of aortic aneurysms. Methods: Th irty-three large balloon dilatation catheters in the diameter range of 15 to 30 mm were measured at controlled pressures from 1 to 4 atm. Th e balloons were inflated with water using an inflation syringe connect ed to a pressure transducer. Diameters at stable pressure and pressure changes against time were recorded for each balloon. Results: Dilatio n catheters in the range of 15 to 20 mm in diameter were significantly smaller (p < 0.005) than their nominal diameter at 1 and 2 atm; they reached nominal diameter only at the relatively high pressure of 4 atm . Most larger diameter balloons (25 and 30 mm) did not attain their no minal diameter even with pressures up to 4 atm. All sizes of balloon c atheters tested became relatively compliant at pressures > 3 atm. Conc lusions: The large balloon catheters tested in this study were designe d for arterial angioplasty or valvuloplasty. They attained a significa ntly smaller size than their nominal diameter at pressures < 3 atm and became compliant at pressures exceeding 3 atm. Interventionists shoul d be aware of these characteristics when using balloon catheters such as these during endoluminal graft deployment. Large balloons that reac h predictable diameter at lower pressures should be designed specifica lly for use in endoluminal graft procedures.