New bench test for venous cannula performance assessment.

Details

Serval ID
serval:BIB_2069B4ECAFB6
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
New bench test for venous cannula performance assessment.
Journal
Perfusion
Author(s)
Abdel-Sayed S., Favre J., Horisberger J., Taub S., Hayoz D., von Segesser L.K.
ISSN
0267-6591 (Print)
ISSN-L
0267-6591
Publication state
Published
Issued date
2007
Volume
22
Number
6
Pages
411-416
Language
english
Abstract
Cannula design is of prime importance for venous drainage during cardiopulmonary bypass (CPB). To evaluate cannulas intended for CPB, an in vitro circuit was set up with silicone tubing between the test cannula encased in a movable preload reservoir and another static reservoir. The pressure-drop (DeltaP) value (P-drainage - P-preload) was measured using Millar pressure transducers. Flow rate (Q) was measured using an ultrasound flowmeter. Data display and data recording were controlled using a LabView application, custom made particularly for our experiments. Our results demonstrated that DeltaP, Q, and cannula resistance (DeltaP/Q) values were significantly decreased when the cannula diameter was increased for Smart and Medtronic cannulas. Smartcanula showed 36% and 43% less resistance compared to Medtronic venous and Medtronic femoral cannulas, respectively. The cannula shape (straight- or curved-tips) did not affect the DLP cannula resistance. Out of five cannulas tested, the Smartcanula outperforms the other commercially available cannulas. The mean (DeltaP/Q) values were 3.3 +/- 0.08, 4.07 +/- 0.08, 5.58 +/- 0.10, 5.74 +/- 0.15, and 6.45 +/- 0.15 for Smart, Medtronic, Edwards, Sarns, and Gambro cannulas, respectively (two-way ANOVA, p < 0.0001). In conclusion, the present assay allows discrimination between different forms of cannula with high or low lumen resistance.
Keywords
Cardiopulmonary Bypass, Catheterization, Central Venous/instrumentation, Equipment Design, Humans
Pubmed
Web of science
Create date
03/09/2011 20:55
Last modification date
20/08/2019 13:56
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