目的　观察血乳酸浓度的动态变化对于休克病人预后的评价价值。方法　分析 37例休克病人的 1小时内 ,12小时 ,2 4小时及 4 8小时的血乳酸水平与预后的关系。结果　存活组病人的血乳酸在 2 4小时内下降至正常 ,而死亡组病人的血乳酸明显高于存活组 ,而且持续时间长 ,在长时间内不能恢复正常。结论　动态监测血乳酸是判断休克病人预后的一个良好指标 ,在短期内恢复正常的患者 ,预后良好 Objective To observe the dynamic changes of blood lactic acid concentration in patients with shock evaluation of the prognosis. Methods 37 cases of shock patients within 1 hour, 12 hours, 24 hours and 48 hours of blood lactate levels and prognosis. Results In the survival group, the blood lactate decreased to normal within 24 hours. However, the blood lactate level in the death group was significantly higher than that in the survival group, and it lasted for a long time and could not return to normal in a long time. Conclusions The dynamic monitoring of blood lactate is a good indicator to judge the prognosis of patients with shock, and the prognosis is good in patients returning to normal in the short term