| Assessment of feline fetal viability by conceptus echobiometry and triplex Doppler ultrasonography of uterine and umbilical arteries. | |
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MedLine Citation:
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PMID: 20934282 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The aims of the present study were to: (1) evaluate blood flow in the uterine (UA) and umbilical arteries (Uma) in the pregnant queen, by measuring the resistive index (RI) and pulsatility index (PI); (2) to note the presence or absence of the early diastolic notch and diastolic flow in the UA and Uma flow waveforms, respectively; and (3) perform conceptus echobiometry for fetal growth assessment during pregnancy. Eight healthy pregnant domestic Brazilian Shorthair queens were examined from Days 10 to 50 after mating (mating=Day 0). Triplex Doppler and B-mode ultrasonography were used to assess blood flow and conceptus echobiometry. All pregnancies ended with a normal parturition and birth of live kittens. Prior to parturition, all conceptus dimensions increased significantly, whereas RI and PI peaked between Days 33 and 43 followed by a decrease (P<0.05). The PI least on Day 50. The RI and PI of Uma decreased (P<0.05) during two periods in the fetal development, i.e. from Days 22 to 40 (0.79 ± 0.01 and 1.64 ± 0.04), and from Days 41 to 50 (0.75 ± 0.01 and 1.39 ± 0.05), representing the increased Uma perfusion. Both the complete disappearance of the early diastolic notch in the UA, and the appearance of diastolic flow in the Uma occurred on Day 42 ± 1. It was concluded fetal echobiometry, UA and Uma perfusion, were important end points to assess fetal viability in queens. Furthermore, the current reference values provided a baseline for monitoring normal and abnormal pregnancies in queens. |
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Authors:
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Adriel B Brito; Stefânia A Miranda; Marcone R Ruas; Regiane R Santos; Sheyla F S Domingues |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-09-15 |
Journal Detail:
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Title: Animal reproduction science Volume: 122 ISSN: 1873-2232 ISO Abbreviation: Anim. Reprod. Sci. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-06 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7807205 Medline TA: Anim Reprod Sci Country: Netherlands |
Other Details:
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Languages: eng Pagination: 276-81 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier B.V. All rights reserved. |
Affiliation:
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Laboratory of Biology and Medicine of Wild Mammals from Amazonia, Federal University of Pará, Belém, Pará, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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