[Early diagnosis of fetal distress and neonatal asphyxia]

122 cases of high risk pregnancies, consisting of mainly pregnancy-induced hypertension (PIH), medical complications, postmaturity and suspected distress were periodically monitored with 11 biophysical and biochemical assays. Positive prediction accuracy rate was analyzed with a neonatal UA pH less than 7.20 as the criterion of fetal hypoxia and ischemia. A number of predicting items together, namely: NST, the other Manning's 4 items, internal monitoring with abnormal Cardiotocography, meconium deeply stained amniotic fluid, FBS pH less than 7.2, uterine contraction time lasting greater than 37 sec and interval shorter than 70 sec, gave the best sensitivity, specificity, positive and negative prediction rates and total accuracy rate of 71.69%, 84.06%, 77.55%, 79.45% and 78.68% respectively. The causes for false positive and false negative cases were discussed. Special attention must be paid to those cases with low UA pH al though normal Apgar scores during the neonatal period.