This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Kurusz, M. Articles by Zwischenberger, J. B Search for Related Content PubMed PubMed Citation Articles by Kurusz, M. Articles by Zwischenberger, J. B Social Bookmarking                         What's this?

Laboratory testing of femoral venous cannulae: effect of size, position and negative pressure on flow

Department of Surgery, The University of Texas Medical Branch, Galveston, Texas, mkurusz{at}utmb.edu

Donald J Deyo

Department of Surgery, The University of Texas Medical Branch, Galveston, Texas

Alina D Sholar

Department of Surgery, The University of Texas Medical Branch, Galveston, Texas

Weike Tao

Department of Surgery, The University of Texas Medical Branch, Galveston, Texas

Joseph B Zwischenberger

Department of Surgery, The University of Texas Medical Branch, Galveston, Texas

Femoral venous cannulae (17-28 French) were tested to compare flows obtained by their placement in a simulated inferior vena cava (IVC) or right atrium (RA) and by varying drainage pressures using gravity siphon drainage or a centrifugal pump in the venous line. The circuit consisted of conventional tubing and equipment including a segment of thin-walled latex tubing to simulate the IVC connected to a flexible reservoir to simulate the RA. The test fluid was a 40% glycerin solution. Flow was measured at height differentials of 30-60 cm (cannula-to-inlet of hard-shell venous reservoir) and with a -10 to -80 mmHg negative pressure created by the centrifugal pump. A roller pump returned the test fluid to a flexible bag to maintain a filling pressure of 0-1 mmHg. Flow increased modestly with an increasing height differential. When negative pressure was applied with the centrifugal pump, flow increased 10% and 18% (IVC and RA positions, respectively) compared to gravity siphon drainage conditions. There also was a tendency for flow to plateau or cease when the centrifugal pump was used at higher levels of negative pressure or when larger cannulae were used. We conclude: (1) position of smaller cannulae in the RA yield better flows than when the cannulae are larger and placed in the IVC; (2) smaller-sized cannulae are capable of achieving higher flows when the centrifugal pump is used; (3) cannulae must be properly positioned to achieve maximum flow; (4) the centrifugal pump will augment flow, but should be regulated to avoid extreme negative pressures; and (5) cannula design has no demonstrable effect on flow.

Perfusion, Vol. 14, No. 5, 379-387 (1999)
DOI: 10.1177/026765919901400510


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				D. Jegger, S. Sundaram, K. Shah, I. Mallabiabarrena, G. Mucciolo, and L.K. von Segesser Using computational fluid dynamics to evaluate a novel venous cannula (Smart canula (R)) for use in cardiopulmonary bypass operating procedures Perfusion, July 1, 2007; 22(4): 257 - 265. [Abstract] [PDF]

				D. Jegger, A. F Corno, A. Mucciolo, G. Mucciolo, Y. Boone, J. Horisberger, I. Seigneul, M. Jachertz, and L. K von Segesser A prototype paediatric venous cannula with shape change in situ Perfusion, January 1, 2003; 18(1): 61 - 65. [Abstract] [PDF]

				F De Somer, D De Wachter, P Verdonck, G Van Nooten, and T Ebels Evaluation of different paediatric venous cannulae using gravity drainage and VAVD: an in vitro study Perfusion, September 1, 2002; 17(5): 321 - 326. [Abstract] [PDF]