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本文为了阐明母儿血气及酸碱平衡的变化对胎儿宫内窘迫的诊断意义,综合国内外有关文献,首先讨论了缺氧时胎儿血气及酸碱平衡改变的机理。并就产时母儿pH值、PCO_2、PO_2值及母儿血细胞外液碱缺失差的改变对胎儿宫内窘迫的诊断价值进行探讨。认为胎儿头皮血pH值是诊断胎儿宫内窘迫比较可靠的方法。胎儿高碳酸血症时,不论其pH值是否正常仍是急性缺氧的早期表现。PO_2的诊断价值不大,母、儿血细胞外液碱缺失差在母亲有酸碱平衡紊乱时作为评价胎儿氧合作用的指标要优于母儿血pH值差异。对产时监护新技术的发展予以介绍。
In order to clarify the changes of maternal blood gas and acid-base balance on the diagnosis of fetal distress significance, comprehensive literature at home and abroad, the first to discuss the mechanism of hypoxia fetal blood gas and acid-base balance changes. The diagnostic value of intrauterine distress in fetus with changes of pH value, PCO_2, PO_2 value and the difference of extracellular extracellular extracellular alkaline deficiencies in labor during delivery was discussed. Fetal blood pH value that is more reliable method of diagnosis of fetal distress. Fetal hypercapnia, whether the normal pH value is still an early manifestation of acute hypoxia. The diagnostic value of PO_2 is not great. The difference of extracellular extracellular caustic soda deficiency between maternal and females is better than that of maternal and neonatal maternal blood when the mother has disorder of acid-base balance as the indicator to evaluate fetal oxygenation. Introduce the development of new technologies for birth control.