Placental Circulation
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. Doppler venoso fetal na insuficiência placentária: relação com o pH no nascimento / Fetal venous Doppler in pregnancies with placental dysfunction: correlation with pH at birth
OBJECTIVE: This study, conducted in high-risk pregnancies with placental insufficiency, aims to avaliate blood flow in the fetal left portal vein (LPV), umbilical vein (UV) and ductus venosus (DV), and establish which parameters are associated with acidemia at birth. METHOD: A prospective research involving 58 pregnant women, classified according to the pres
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2012
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2. Efeitos agudos do fumo sobre a hemodinâmica da circulação feto-materno-placentária / Acute effects of maternal smoking on fetal-placental- maternal system hemodynamics
Objective - To study acute hemodynamic alterations in the fetal-placental maternal system immediately after maternal exposure to nicotine. Methods - This is a noncontrolled experimental study involving 21 pregnant smoking women, randomly selected, with uncomplicated pregnancies and without risk factors for fetal heart disease. Patients underwent ultrasound a
Publicado em: 2010
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3. The role of HSP 60 in leucocytes cells of bovine placenta / O papel da HSP 60 nas células leucocitárias da placenta bovina
The maternal-fetal tolerance involves, besides the immune system, many peculiarities regarding the type of placenta and placentation. The bovine placenta is considered not invasive and, as consequence of a superficial implantation without endometrial invasion, it establishes itself as complex barrier that interposes between the maternal and fetal circulation
Publicado em: 2009
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4. Measurements of placental volume and vascular indices by three-dimensional ultrasound power Doppler in normal pregnancies / Mensuração do volume e quantificação dos índices vasculares placentários pela ultra-sonografia tridimensional com power Doppler em gestações normais
Objectives: The purpose of this study was to construct normograms of placental volume and placental vascular indices in normal gestations according to gestational age and fetal weight by three dimensional ultrasound power Doppler. Methods: A study was performed with 280 normal pregnant women presenting 12 to 38 weeks of pregnancy, during the period between M
Publicado em: 2008
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5. Reference ranges for Doppler flow velocity indices of the uteroplacental, fetoplacental and fetal circulation in normal pregnancies / Construção de curvas de normalidade dos índices dopplervelocimétricos das circulações uteroplacentária, fetoplacentária e fetal
INTRODUÇÃO: A dopplervelocimetria foi incorporada à propedêutica obstétrica por ser um método rotineiro e não-invasivo, que possibilita a avaliação da função placentária e da resposta fetal à hipoxia em gestações de alto risco. Várias curvas de valores de referência dos índices dopplervelocimétricos dos vasos de interesse na especialidade
Publicado em: 2007
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6. A subplacenta da paca (Agouti paca, Linnaeus 1766) / The subplacenta of the paca (Agouti paca, Linnaeus 1766)
The rodents of suborder hystricomorph, in which is classified the Agouti paca, present hemochorial type placentation and develops an unique structure known as subplacenta. In spite of many report of its presence in several species, the possible functions of this structure related to placenta and pregnancy remains speculative, mainly due to the diversity of f
Publicado em: 2005
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7. Study of the uterine arteries Doppler ultrasound in three periods of normal pregnancies / "Estudo dopplervelocimétrico das artérias uterinas em três períodos de gestações normais"
Estudo longitudinal, prospectivo, comparativo de avaliação dopplervelocimétrica das artérias uterinas direita e esquerda em 37 gestantes normais em três períodos da gestação, acompanhadas na Clínica Obstétrica do HCFMUSP. Análise da relação S/D, índice de pulsatilidade e índice de resistência, relação com o número de incisuras e com posiç
Publicado em: 2003
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8. Acute Effects of Maternal Smoking on Fetal-Placental-Maternal System Hemodynamics
OBJECTIVE: To study acute hemodynamic alterations in the fetal-placental maternal system immediately after maternal exposure to nicotine. METHODS: This is a noncontrolled experimental study involving 21 pregnant smoking women, randomly selected, with uncomplicated pregnancies and without risk factors for fetal heart disease. Patients underwent ultrasound and
Arquivos Brasileiros de Cardiologia. Publicado em: 2002-02
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9. Estudo Macro e Microscópico da Placenta de Termo de Capivara (Hydrochaeris hydrochaeris - Carleton, M. D. 1984) / Macroscopic and microscopic study of mature capybara placenta (Hydrochaeris hydrochaeris - CARLETON, M. D. 1984)
South and Central America are the natural habitat of the capybara, in the areas that go from Panama to Argentina, including the Andes region. These animals are herbivorous, diurnal, semi-aquatic, gregarious and docile; they live in large groups and are potentially important for the production of high quality meat, skin and oils, largely utilized in popular m
Publicado em: 2001
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10. Indomethacin is a Placental Vasodilator in the Dog: THE EFFECT OF PROSTAGLANDIN INHIBITION
The effect of 8 mg/kg of indomethacin on uterine blood flow, prostaglandin production, and intraamniotic fluid pressure was examined in late pregnant dogs. Uterine blood flow was measured with 15 μm radiolabeled microspheres. Because we found that a significant percentage of the microspheres shunted through the placental circulation into the lungs, we calcu
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11. Significance of placental pathology in transplacental haemorrhage
Placentae were examined from 120 women whose pregnancy and delivery was normal, from 264 women whose pregnancy or delivery was complicated, and from 98 women who were Rh-negative without antibodies and 35 women Rh-negative with antibodies. The presence of Kline's haemorrhages, intervillous thrombi, infarcts, and retroplacental haemorrhages was positively cor
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12. Placental involvement in congenital neuroblastoma.
We describe two cases of congenital neuroblastoma involving the placenta and review previously reported cases. The placentae in congenital neuroblastoma have a bulky, hydropic appearance, and contain tumour cells which are confined to the fetal circulation. The tumour emboli are not macroscopically identifiable. Pathophysiological mechanisms of placental inv