A model of venous return while utilizing vacuum assist during cardiopulmonary bypass. J Extra Corpor Technol 2003 Sep;35(3):224-9
Date
12/05/2003Pubmed ID
14653425Scopus ID
2-s2.0-0242440871 (requires institutional sign-in at Scopus site) 6 CitationsAbstract
In order for vacuum-assisted venous return (VAVR) to be used safely and efficiently during cardiopulmonary bypass (CPB), a full understanding of venous return is necessary. The focus of this work was to use the concepts of energy conservation and viscous energy dissipation in the development of a theoretical model of venous return utilizing vacuum assist. The effectiveness and accuracy of this model has been verified through in vitro laboratory investigations and statistical analysis. Although VAVR can provide higher flows through smaller venous cannula, vacuum assist may lead to increased levels of wall shear stress as shown in this work. The clinical implications of VAVR have yet to be investigated, but may lead to an exacerbation of the detrimental effects of CPB during cardiac surgery.
Author List
Brown SM, Fennigkoh L, Gerrits R, Hietpas M, Tritt CAuthor
Ron Gerrits BS,PhD Faculty in the Biomedical Engineering department at Milwaukee School of EngineeringMESH terms used to index this publication - Major topics in bold
Blood ViscosityCardiopulmonary Bypass
Extracorporeal Circulation
Heart-Lung Machine
Humans
Models, Theoretical
Reperfusion
Shear Strength