665: Calculation of Cerebroplacental Ratio (CPR) using both Umbilical Arteries versus Individual Umbilical Arteries
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چکیده
منابع مشابه
Constriction of Human Umbilical Arteries
Experiments on perfused segments or isolated rings of human umbilical artery showed that the magnitude of their contraction in response to bradykinin, epinephrine, or serotonin depended on the P02 of the perfusing or bathing solution. Constriction to bradykinin varied directly with the O2 tension and was greatest when the Po2 was approximately that of umbilical arterial blood during the transit...
متن کاملProteoglycans of human umbilical cord arteries.
Proteoglycans (PGs) were dissociatively extracted from human umbilical cord arteries (UCAs) with 4 M guanidine hydrochloride containing Triton X-100 and protease inhibitors, purified by Q-Sepharose anion exchange chromatography and lyophilized. They were analysed by gel filtration, SDS/PAGE and agarose gel electrophoresis before and after treatment with chondroitinase ABC. It was found that the...
متن کاملAntenatal assessment of discordant umbilical arteries in singleton pregnancies.
AIM To assess the relationship between discordant umbilical arterial size and resultant blood flow parameters and determine the impact of discordance on fetal outcome. METHODS This is a descriptive, cross-sectional study of 200 patients with a singleton gestation, who underwent a fetal anatomy survey between 18 to 23 weeks of gestation, with documented umbilical cord morphological patterns an...
متن کاملDifferential development of umbilical and systemic arteries. II. Contractile proteins.
In fetal sheep, umbilical responsiveness to ANG II exceeds systemic vascular responsiveness. Fetal systemic vascular smooth muscle (VSM) exhibits an immature phenotype with decreased contractile protein contents, low 200-kDa myosin heavy chain (MHC) SM2, and significant nonmuscle MHC-B expression, whereas umbilical VSM phenotype is incompletely described. We tested the hypothesis that differenc...
متن کاملSmall vessel replacement by human umbilical arteries with polyelectrolyte film-treated arteries: in vivo behavior.
OBJECTIVE The aim of this study was to evaluate the patency of human umbilical arteries treated with polyelectrolyte multilayers (PEMs) after rabbit implantation. BACKGROUND The development of small-caliber vascular substitutes with high patency after implantation remains a real challenge for vascular tissue engineering. METHODS Cryopreserved human umbilical arteries were enzymatically de-e...
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ژورنال
عنوان ژورنال: American Journal of Obstetrics and Gynecology
سال: 2020
ISSN: 0002-9378
DOI: 10.1016/j.ajog.2019.11.680