Sökning: "Cesarean section"
Visar resultat 16 - 20 av 65 avhandlingar innehållade orden Cesarean section.
16. Massive transfusion in relation to obstetric hemorrhage : with special attention to placenta accreta
Sammanfattning : The overall purpose of this thesis was to assess risk factors, incidences, and complications of massive blood transfusions in relation to obstetric hemorrhage postpartum. Obstetric hemorrhage requiring blood transfusion postpartum has recently shown an increasing trend in many high resource countries. LÄS MER
17. Brain-sparing Circulation in Growth-restricted Human Fetuses
Sammanfattning : The aim of the studies was to explore fetal circulatory changes relative to development of brain-sparing flow (BSF) in growth-restricted fetuses exposed to acute hypoxic stress, as provoked by uterine contractions during an oxytocin challenge test (OCT).(1) In fetuses with a normal cerebral circulation during basal conditions, signs of an acute hyperperfusion in both the arterial and venous cerebral vascular systems were demonstrated in response to acute hypoxic stress; (2) Fetuses with an already established BSF showed no further ability of brain-sparing during acute hypoxic stress; (3) In venous cerebral vessels of fetuses with established BSF, the flow responses to hypoxic stress were equivocal, indicating different reactions in areas drained by different veins, or a deranged physiological vascular response; (4) Blood flow changes occurred synchronized in the middle and anterior cerebral arteries when fetuses with an intact cerebral circulation were exposed to hypoxic stress; (5) When fetuses with an established BSF showed no further changes in the middle cerebral artery, no changes were found in the anterior cerebral artery either. LÄS MER
18. Moderately preterm infants : studies on length of hospital stay and neonatal outcome
Sammanfattning : Objective: Moderately preterm infants account for a large proportion of admissions and bed-days in neonatal units. Determinants of length of hospital stay, contemporary measures of morbidity by gestational week and risk factors predicting neonatal morbidity have been poorly studied. LÄS MER
19. Interventions during pregnancy and labor and obstetric outcome
Sammanfattning : Objectives: The overall objective with the present thesis was to assess pregnancy and delivery associated risk factors for adverse pregnancy outcomes. Specific aims were : 1) to analyze the association between fetal size at the time of dating ultrasound and the risk of preterm delivery, small for gestational age birth (SGA), and macrosomia and to evaluate if the timing of ultrasound, i. LÄS MER
20. Progesterone in human parturition : progesterone and 5α-pregnane-3,20-dione in relation to human myometrial activity
Sammanfattning : This study was undertaken to evaluate the relationship of progesterone and 5α-pregnane-3,20-dione (5αDHP), a major progesterone metabolite, to human parturition. The serum concentrations of 5αDHP prior to, during and following parturition were to be established, as well as its maternal and fetal concentration in different modes of delivery. LÄS MER