| A mock circulatory system with physiological distribution of terminal resistance and compliance: application for testing the intra-aortic balloon pump. | |
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MedLine Citation:
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PMID: 21039645 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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A mock circulatory system (MCS) was designed to replicate a physiological environment for in vitro testing and was assessed with the intra-aortic balloon pump (IABP). The MCS was comprised of an artificial left ventricle (LV), connected to a 14-branch polyurethane-compound aortic model. Physiological distribution of terminal resistance and compliance according to published data was implemented with capillary tubes of different sizes and syringes of varying air volume, respectively, fitted at the outlets of the branches. The ends of the aortic branches were connected to a common tube representing the venous system and an overhead reservoir provided atrial pressure. An IABP operating a 40-cc balloon was set to counterpulsate with the LV. Total arterial compliance of the system was 0.94 mL/mm Hg and total arterial resistance was 20.3 ± 3.3 mm Hg/L/min. At control, physiological flow distribution was achieved and both mean and phasic aortic pressure and flow were physiological. With the IABP, aortic pressure exhibited the major features of counterpulsation: diastolic augmentation during inflation, inflection point at onset of deflation, and end-diastolic reduction at the end of deflation. The contribution of balloon inflation and deflation was also evident on the aortic flow pattern. This MCS was verified to be suitable for IABP testing and with further adaptations it could be used for studying other hemodynamic problems and ventricular assist devices. |
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Authors:
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Christina Kolyva; Giovanni Biglino; John R Pepper; Ashraf W Khir |
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Publication Detail:
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Type: Journal Article Date: 2010-10-12 |
Journal Detail:
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Title: Artificial organs Volume: 36 ISSN: 1525-1594 ISO Abbreviation: Artif Organs Publication Date: 2012 Mar |
Date Detail:
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Created Date: 2012-03-07 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7802778 Medline TA: Artif Organs Country: United States |
Other Details:
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Languages: eng Pagination: E62-70 Citation Subset: IM |
Copyright Information:
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© 2010, Copyright the Authors. Artificial Organs © 2010, International Center for Artificial Organs and Transplantation and Wiley Periodicals, Inc. |
Affiliation:
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Brunel Institute for Bioengineering, Brunel University, Middlesex Royal Brompton Hospital, Imperial College, London, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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