| Aortic flow patterns resulting from right axillary artery cannulation. | |
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MedLine Citation:
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PMID: 21398649 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Right axillary artery (RAA) cannulation is increasingly used in cardiac surgery. Little is known about resulting flow patterns in the aorta. Therefore, flow was visualized and analyzed. A mock circulatory circuit was assembled based on a compliant transparent anatomical silicon aortic model. An RAA cannula was connected to a continuous flow rotary blood pump (RBP), pulsatile heart action was provided by a pneumatic ventricular assist device (PVAD). Peripheral vascular resistance, regional flow and vascular compliance were adjusted to obtain physiological flow and pressure waveforms. Colorants were injected automatically for flow visualization. Five flow distributions with a total flow of 4 l/min were tested (%PVAD:%RBP): 100:0, 75:25, 50:50, 25:75, 0:100. Colorant distribution was assessed using quantitative 2D image processing. Continuous flow from the RAA divided in a retrograde and an antegrade portion. Retro- to antegrade flow ratio increased with increasing RAA-flow. At full RBP support flow was stagnant in the ascending aorta. There were distinct flow patterns between the right- and left-sided supra-aortic branches. At full RBP support retrograde flow was demonstrated in the right carotid and right vertebral arteries. Further studies are needed to confirm and evaluate the described flow patterns. Keywords: Axillary artery; Circulatory support; Flow visualization; Extracorporeal circulation; Pulsatility; Simulation. |
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Authors:
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Stefanos Demertzis; Hendrik Tevaearai; Thierry Carrel; Stijn Vandenberghe |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-11 |
Journal Detail:
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Title: Interactive cardiovascular and thoracic surgery Volume: - ISSN: 1569-9285 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101158399 Medline TA: Interact Cardiovasc Thorac Surg Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Cardiovascular Surgery, Bern University Hospital, Inselspital, Bern, Switzerland. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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