摘要目的 评价多次给予羟乙基淀粉或高渗氯化钠溶液对实验性脑出血(ICH)大鼠脑水肿的影响.方法 清洁级雄性SD大鼠167只,体重260～300 g,随机分为假手术组(S组,n=20)、ICH组(M组,n=38)、氯化钠组(N组,n=55)和羟乙基淀粉组(H组,n=54).采用立体定向技术向大鼠右侧尾状核注入自体血50μl建立ICH模型,S组仅刺入基底节,但不注血.N组分别于ICH后2、24、48、72 h前5～10 min静脉输注7.5%氯化钠溶液5 ml/kg,H组分别于ICH后2、24、48、72 h前45～50 min静脉输注6%羟乙基淀粉130/0.4 30 ml/kg,速率均为0.2 ml/min.S组和M组分别于ICH后2、24、48、72 h随机取5只大鼠断头处死,N组和H组则在上述各时点输液前、后随机取5只大鼠处死,采用干湿重法测定脑含水量;各组每天行行为学评分,观察大鼠生存情况.结果 与M组比较,N组和H组ICH后2、24、48、72 h输液后注血侧皮层和基底节脑含水量、ICH后24、48 h时行为学评分降低,ICH后24、48、72 h时生存率升高(P<0.05);与N组比较,H组ICH后72 h时生存率升高(P<0.05).结论 多次给予6%羟乙基淀粉130/0.4或7.5%氯化钠溶液可改善ICH后大鼠脑水肿.

abstractsObjective To investigate the effects of repeated administrations of 6% hydroxyethy] starch (HES) 130/0.4 or 7.5 % NaCl (NS) on brain water content (BWC) after experimental intracerebral hemorrhage (ICH) in rats.Methods One hundred and sixty-seven male SD mrs weighing 260-300 g were randomly divided into 4 groups: group Ⅰ sham operation (S) (n = 20) ;group Ⅱ ICH (n = 38) ;group Ⅲ NS + ICH (n = 55) and group Ⅳ HES + 1CH (n = 54). The animals were anesthetized with intraperitoneal 10% chloral hydrate 400 mg/kg. Experimental ICH was produced by injection of fresh autologous blood 50 μl into right caudate nucleus. In group NS (group Ⅲ) 7.5% NaCl 5 ml/kg and in group HES (group Ⅳ) 6% HES 30 ml/kg were injected at 2, 24, 48 and 72 h after ICH. In group S and ICH (group Ⅰ and Ⅱ) 5 animals were killed at 2, 24, 48 and 72 h after ICH, while in group Ⅲ (NS) and Ⅳ (HES) 5 animals were killed at 2, 24, 48 and 72 h after ICH, immediately before and after NS/HES infusion for determination of ipsilateral and contralateral cerebral cortex and basal ganglion, weight and W/D weight ratio. Rosenberger behavior scores and survival rates were also recorded. Results In group Ⅲ (NS + ICH) and Ⅳ (HES + ICH) the water content of ipsilateral cerebral cortex and basal ganglion was significantly lower than in group Ⅱ (ICH). Rosenberger behavior scores at 24 h and 48 h after ICH were significantly lower in group NS and HES than in group Ⅱ (ICH) . The survival rates at 24, 48 and 72 h after ICH were significandy lower in group Ⅱ than in group NS and HES, especially at 72 h in group HES. Conclusion Repeated administrations of 6% HES 130/0.4 or 7.5% NaCl can ameliorate brain edema after ICH.