| Thoracic aortic pulsatility decreases during hypovolemic shock: implications for stent-graft sizing. | |
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MedLine Citation:
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PMID: 21861735 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Abstract Purpose: To investigate the thoracic aortic pulsatility during hypovolemic shock in an experimental porcine model. Methods: The circulating blood volume of 7 healthy Yorkshire pigs was gradually lowered until the subjects had lost 40% of their normal blood volume. Intravascular ultrasound was used to assess the aortic pulsatility in normovolemic and hypovolemic state at the level of the ascending and descending thoracic aorta. Results: The mean aortic pulsatility at the level of the ascending aorta decreased from 15.9%±7.2% (range 6.3%-25.7%) in normovolemia to 6.2%±2.8% (range 2.9%-10.7%, p = 0.018) in hypovolemia. At the level of the descending thoracic aorta, the mean aortic pulsatility decreased from 8.7%±2.8% (range 4.4%-12.2%) at baseline to 5.6%±2.5% (range 1.5%-9.5%, p = 0.028) in hypovolemia. The maximum mean aortic diameter, obtained in cardiac systole, was significantly smaller as well at both evaluated levels during hypovolemic shock compared with the mean diameter in normovolemia. Conclusion: The thoracic aortic diameter and pulsatility decreased significantly during hypovolemic shock in this porcine model, most impressively at the level of the ascending aorta. Electrocardiographically-gated imaging may not be necessary for hypovolemic patients with acute aortic disease requiring endovascular repair because of the minimal aortic pulsatility. |
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Authors:
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Frederik H W Jonker; Jasper W van Keulen; Felix J V Schlosser; Jeffrey E Indes; Frans L Moll; Hence J M Verhagen; Bart E Muhs |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists Volume: 18 ISSN: 1545-1550 ISO Abbreviation: J. Endovasc. Ther. Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-08-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100896915 Medline TA: J Endovasc Ther Country: United States |
Other Details:
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Languages: eng Pagination: 491-6 Citation Subset: IM |
Affiliation:
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1 Section of Vascular Surgery, Maasstad Hospital, Rotterdam, The Netherlands. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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