Comparing the umbilical arterial cord blood gas determinants and intrapartum fetal echocardiographic patterns, we analysed the deceleration patterns which were recorded during first stage of labor in 35 cases of fetal distress from Oct., 1993 to
May,
1994.
And we analysed umbilical cord arterial gas pH, PO2, PCO2, HCO3 in 15 cases normal controls, 8 early deceleration, 15 late deceleration, and 12 variable deceleration which all cases underwent Cesarean section.
In control group the mean values of fetal umbilical arterial pH, PO2, PCO2, PCO3 were 7.284±0.059, 24.13±7.417mmHg, 49.59±9.54mmHg and 23.17±2.789nmol/1 respectively. In early deceleration group, the mean values of fetal umbilical arterial
pH,
PO2,
PCO2, HCO3 were 7.221±0.792, 20.96±7.447mmHg, 56.35±10.67mmHg and 22.70±1.046nmol/1, respectively. In late deceleration group, the mean values of fetal umbilical arterial pH, PO2, PCO2, HCO3 were 7.242±0.062, 16.29±6.395mmHg,
52.99±10.77mmHg,
22.76±4.195nmol/1, respectively.
In variable deceleration group, the mean values of fetal umbilical arterial pH, PO2, PCO2, HCO3 were 7.216±0.084, 21.83±8.894mmHg, 5759±9.99mmHg and 23.27±2.941nmol/1, resectively.
PO2 appeared to be statistically decreased in early and late deceleration. PCO2 were tend to be statistically increased in early and variable deceleration. These results suggest that all abnormal fetal echocardiographic patterns do not predict
fetal
hypoxia and fetal asphyxia. Therefore a combined correlation of acid-base determinants by percutaneous umbilical blood sampling and clinical finding of maternal and fetal condition is mandatory for the prediction of long term developmental
outcome
by
fetal asphyxia.
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