胎儿血液 pH 测定是判断胎儿宫内状态的重要生化指标之一。它的理论基础是胎儿酸碱内稳状态的变化。当胎儿缺氧时,无氧酵解占优势,乳酸大量堆积,由于缓冲系统的调节乳酸和碳酸氢盐作用生成可溶性的 CO_2。当然其他缓冲对如血红蛋白离子亦参与这一调节过程。通过缓冲使胎儿的酸碱平衡得以保 Fetal blood pH measurement is one of the important biochemical indicators to determine the status of the fetus. Its theoretical basis is the change of fetal acid-base stable state. When fetal hypoxia, anaerobic glycolysis dominated, a large number of lactic acid accumulation, due to the buffer system to regulate the role of lactate and bicarbonate to generate soluble CO_2. Of course other buffers such as hemoglobin ions are also involved in this regulatory process. By buffering the fetus’s acid-base balance to be protected