胎儿窘迫的母、胎血气与酸碱平衡变化

CHANGES OF MATERNAL FETAL BLOOD AND ACID-BOSE BALANCE IN FETAL DISTRESS PATIENTS

本文报道40例胎儿窘迫的临产妇和胎儿的血气变化。同时以无窘迫的临产妇、胎儿做对照。结果:1、母动脉、胎头、脐动脉、静脉血的pH、PO_2、HCO_2^-、TCO_2、ABE等窘迫组较对照组明显降低(P<0.01),而PCO_2则明显增高(P<0.01);2、母动脉血、胎头血的酸碱失衡类型.窘迫组较对照组混合性酸碱失衡明多显(P<0.01);3、胎头皮血pH<7.20老羊水Ⅲ°混浊占83.33%,Apgar<7分占95.8%,而pH≥7.25者,92.86%无新生儿窒息。

The paper reports the blood gas changes in 46 partueient women and theirfetuses with the signs of fetal distress. Parturients and fetuses who are free from fetal distress are taken as the control group. The results are as fellows:1. The levels of pH, FO_2, HCO_3, TCO_2 and ABE in the maternal arteria,fetal scald blood umbilical cord vein and arteria are significantly lower thanthose of the contrcl group (P<0.01), while PCO_2 is higher (P<0.01).2. Comparision of acid-base dysequilibrium between the two groups inmaternal arteria and fetal scalp blood turns out that the cases of mixed dyse-quilibrium in the experimental group occurs more frequently than those ofthe control group (P<0.01). 3. In the cases cf pH<7.20, 83.33% hasmeconium staining Ⅲ; 95.8% Apgar Scoring 7; while in the cases withpH≥7.25, 92.8% of the neonates are free from fetal asphyxia.