Sökning: "umbilical vein"
Visar resultat 1 - 5 av 40 avhandlingar innehållade orden umbilical vein.
Sammanfattning : The aim of the work described in this thesis was to evaluate the value of ultrasound examinations of the amniotic fluid, umbilical cord and blood flow velocity waveform of the fetal and placental vessels as predictors of the perinatal outcome. In the first study, the amniotic fluid index (AFI) measured on admission to the labour ward was evaluated in low-risk pregnancies. LÄS MER
Sammanfattning : Placental dysfunction resulting in intrauterine growth restriction (IUGR) is a common complication of pregnany and severe IUGR, with ensuing fetal hypoxia is an important cause of perinatal mortality and morbidity. Doppler studies of fetal and maternal vessels are routinely used for fetal surveillance and alterations in fetal venous blood flow has been demonstrated as a late sign of fetal compromise. LÄS MER
Sammanfattning : ABSTRACT In high-risk pregnancies the chronic hypoxemic fetus redistributes its circulation to maintain the blood supply to the vital organs: brain, heart and adrenals. The aims of the studies included in this thesis were: 1) to establish reference curves for fetal cerebral venous blood velocity in normal pregnancies; 2) to determine in high-risk pregnancies the frequency of abnormal Doppler in the cerebral veins and uterine, umbilical and middle cerebral arteries and the umbilical vein and ductus venosus with correlation with adverse perinatal outcome; 3) to analyze the correlation between brain sparing and redistribution of circulation and placental vascular impedance; 4) to evaluate the correlation between brain sparing and fetal umbilical cord blood gases at birth. LÄS MER
Sammanfattning : From the Division of Clinical Science, Department of Obstetrics and Gynecology, Karolinska Institute, Huddinge University Hospital, Stockholm, Sweden. Endothelin and Endothelin-Receptors in Human Pregnancy and Delivery Kerstin Wolff Background: Endothelin -1 (ET-1) is a 21-amino acid peptide, first described by Yanagisawa et al in 1988. LÄS MER
Sammanfattning : The improvement of cardiovascular prosthetic materials, to reducethrombus formation and inflammatory/immunological reactions, is a clinicalchallenge. Endothelial cell (EC) seeding using autologous cells to line the luminalsurface of prosthetic materials has been suggested. LÄS MER