人工脑脊液灌洗时间对脑外伤后脑水肿的影响

Effect of artificial cerebrospinal fluid lavage time on the edema of traumatic brain injury

目的:检测不同的人工脑脊液灌洗时间对脑外伤后脑水肿的影响。方法:将SD大鼠240只,随机分为假手术组、脑外伤模型组、人工脑脊液灌洗3 h组、6 h组、9 h组,各组又按处死时间即伤后12 h,1 d,3 d,7 d分为4个亚组,通过检测水、Na+、K+含量、VEGF的表达来证实不同灌洗持续时间对减轻外伤后脑水肿的作用。结果:与假手术组、脑外伤模型组相比,人工脑脊液灌洗组脑组织含水量和Na+含量下降,K+含量和VEGF灰度值水平升高,在伤后12 h,1 d,3 d各时间点比较差异均有统计学意义(P<0.05),且随着灌洗时间的延长,差异更加显著。结论:人工脑脊液灌洗能减轻脑外伤后脑水肿的程度,灌洗时间越长,效果越明显。

Objective： To detect the impact of artificial cerebrospinal fluid lavage time on the edema of traumatic brain injury. Methods： A total of 240 SD rats were randomly divided into a sham group, a traumatic brain injury model group, 3 artificial cerebrospinal fluid lavage groups （3 h, 6 h and 9 h）. Each group was divided into 4 sub-groups by time of sacrifice namely 12 h, 1 d, 3 d and 7 d postoperatively. We detected the content of brain water, sodium, and potassium, and the VEGF expression to confirm whether the duration oflavage could reduce the traumatic brain edema.