[Criteria for the antenatal diagnosis of chronic fetal hypoxia in certain forms of high-risk pregnancy].

The author aimed to compared and simultaneously interpret results from cardiotocographic, ultrasound and hormonal studies and to establish objective criteria, showing the degree of antenatal risk for the fetus. She investigated 176 pregnant women with EPH--gestosis, 136 women with chronologically prolonged pregnancy and 50 healthy pregnant women as a control group. Non stress test (NST, functional oxytocin test, quantitative and semiquantitative evaluation of cardiac frequency of the fetus (CFF) were made. Placental structure was examined by an echograph, as well as the amount of amniotic fluid. Fetal biometry was made as well. Total estrogens (TE) were determined in 24-hour diuresis. It was established that the normal curve of NST was a sign of fetal well-being, but that curve combined with deceleration, together with low values of TE, were criteria for reduced compensatory possibilities of the fetus. NST with decelerations in Braxton Hicks contractions, even part greater than 80% and "terminal" or sharply falling values of TE were signs impending fetal death.