平衡液静脉输入以补充体液,临床上大量用于创伤或出血性休克和失水等症。平衡液配方有多种,常用的有复方氯化钠,复方乳酸钠注射液等。前者缺乏血液中必要的缓冲物质碳酸氢钠,其pH值为5～7,比血液(pH7 .35~7 .45)为低,后者中的乳酸钠要在有氧条件下,经肝脏乳酸脱氢酶的作用转化为丙酮酸,再经三羧酸循环氧化脱羧,才能转为碳酸氢根离子(HCO3一)。而碳酸氢钠可 Balanced intravenous fluid to supplement body fluids, a large number of clinically used for trauma or hemorrhagic shock and dehydration embolism. Balancing fluid formulations have a variety of commonly used compound sodium chloride, compound sodium lactate injection. The former lack of the necessary buffer sodium bicarbonate in the blood, the pH value of 5 to 7, lower than the blood (pH7. 35 ~ 7 .45) is low, which sodium lactate to aerobic conditions, the liver lactic acid off The role of hydrogenase into pyruvate, followed by oxidation and decarboxylation of carboxylic acid cycle, can be converted to bicarbonate ions (HCO3 a). Sodium bicarbonate can be