A case is presented in which a fetus was delivered by cesarean section for failure to progress and a "nonreassuring heart rate tracing" in which the Apgar scores were unexpectedly 0 at 1, 5, and 10 minutes. Resuscitation was unsuccessful after 30 minutes. The venous cord gas was normal and the arterial blood gas was not consistent with intrapartum asphyxia. At the time of surgery, the placenta ...

• "When fetaJ asphyxia or hypoxia is induced by reduction of uterine and umbilical circulations oi" by administration of a gas mixture of low oxygen content to the mother, there is an increase in the fetal arterial pressure." The effects on the fetal heart rate appear to be variable. Bradycardia has been observed by several investigators.*~ Born et al. noted that the changes in heart rate depen...

AIM The objective of the study was to examine whether cardiotocography can (CTG) predict asphyxia of the embryo, manifested as hypoxic-ischemic encephalopathy (HIE), and to what extent one can rely on CTG record. MATERIAL AND METHODS Retrospective research was carried out at the Clinic for Gynecology and Obstetrics UKC Tuzla and medical documentation from the history of mothers and newborns w...

The umbilical venous oxygen and carbon dioxide tensions, pH, lactate and glucose concentrations, nucleated red cell (erythroblast) count, and haemoglobin concentration were measured in 38 cases of intrauterine growth retardation in which fetal blood sampling was performed by cordocentesis. The oxygen tension was below the normal mean for gestational age in 33 cases; in 14 it was below the lower...

The renin response to hypoxia in late gestation fetal sheep has been well characterized. However, the renin response to asphyxia-the combination of hypoxia and hypercapnia-has not been extensively studied. The purpose of this study was to determine 1) the interaction of hypoxia and hypercapnia in the control of renin secretion in late gestation fetal sheep and 2) the role of peripheral arterial...

Marked elevations in the vasopressin concentrations in human umbilical cord blood have been reported previously (4, 8). This could either be a part of generalized increase in the activity of fetal endocrine system at the time of birth, a phenomenon that has led to the concept of fetal participation in the onset of labor, or simply due to the stress of delivery. The present study is an attempt t...

Renal impairment is common in preterm infants, often after exposure to hypoxia / asphyxia or other circulatory disturbances. We examined the hypothesis that this association is mediated by reduced renal blood flow (RBF), using a model of asphyxia induced by complete umbilical cord occlusion for 25 min (n=13) or sham occlusion (n=6) in chronically instrumented preterm fetal sheep (104 days, term...