| Cardiac outflow and wall motion in hypothermic chick embryos. | |
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MedLine Citation:
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PMID: 21971263 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Cardiac outflow in the early developmental stage of a chick embryo is known to be highly variable depending on environmental temperature. To investigate the effects of environmental hypothermia on the blood flow in the outflow tract (OFT) of chick embryonic hearts, microscopic flow images were consecutively captured from chick embryos at HH stage 17 (2.5days of incubation) at room temperature. Instantaneous velocity field information of blood flow in OFT was obtained using a micro-particle image velocimetry technique. The cyclic variations of the OFT vessel diameter and wall thickness were simultaneously measured. The experimental results show that environmental hypothermia causes bradycardia with a decrease in peak velocity during systole and the occurrence of backflow during diastole in the OFT. These abnormal phenomena seem to be attributed to the suppression of myocardial wall motion under hypothermic conditions. |
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Authors:
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Sang-Joon Lee; Eunseop Yeom; Hojin Ha; Kweon-Ho Nam |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-9-21 |
Journal Detail:
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Title: Microvascular research Volume: - ISSN: 1095-9319 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-10-5 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0165035 Medline TA: Microvasc Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011. Published by Elsevier Inc. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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