Journal article
Dual-pump support in the inferior and superior vena cavae of a patient-specific fontan physiology
Artificial organs, v 37(6), pp 513-522
Jun 2013
PMID: 23692310
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The implementation of simultaneous mechanical cavopulmonary assistance having blood pumps located in both of the vena cavae is investigated as an approach to treating patients with an ailing Fontan physiology. Identical intravascular blood pumps are employed to model the hemodynamic support of a patient-specific Fontan. Pressure flow characteristics, energy gain calculations, and blood damage analyses are assessed for each model. The performance of the dual-support scenario is compared to conditions of mechanical support in the inferior vena cava only and to a nonsupported cavopulmonary circuit. The blood pump in the superior vena cava generates pressures ranging from 1 to 22 mm Hg for flow rates of 1-4 L/min at operating speeds of 1250-2500 rpm. The blood pump in the inferior vena cava produces pressures at levels approximately 20% lower. The blood pumps positively augment the hydraulic energy in the total cavopulmonary connection circuit as a function of flow rate and rotational speed. Scalar stress levels and fluid residence times are at acceptable levels. Damage indices for the dual-support case, however, are elevated slightly above 3.5%. These results suggest that concurrent, mechanical assistance of the inferior vena cava and superior vena cava in Fontan patients has the potential to be beneficial, but additional studies are needed to further explore this approach.
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Details
- Title
- Dual-pump support in the inferior and superior vena cavae of a patient-specific fontan physiology
- Creators
- Amy L Throckmorton - BioCirc Research Laboratory, Department of Mechanical and Nuclear Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA. althrock@vcu.eduSergio Lopez-IsazaWilliam Moskowitz
- Publication Details
- Artificial organs, v 37(6), pp 513-522
- Publisher
- Wiley; United States
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000320193300005
- Scopus ID
- 2-s2.0-84879107247
- Other Identifier
- 991014877756404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Biomedical
- Transplantation