摘要
目的 观察不同麻醉方法下食管手术病人围术期红细胞醛糖还原酶(AR)、磷酸果糖激酶(PFK)及6-磷酸葡萄糖脱氢酶(G-6PD)活性和血浆丙二醛(MDA)、谷胱甘肽(GSH)浓度的变化。方法 32例择期行开胸食管手术病人,ASAI-Ⅱ级,随机分成两组,每组16例。Ⅰ组采用异氟醚吸入全麻,维持异氟醚呼气末浓度1.2-1.6MAC;Ⅱ组采用异氟醚吸人复合连续硬膜外阻滞麻醉,维持异氟醚呼气末浓度为0.6-0.8MAC。于麻醉前手术当天8:00 am、手术90min、术毕60min及术后第1天(8:00 am)和第2天(8:00 am)分别取静脉血,测定血糖、血浆MDA和GSH浓度以及红细胞内AR、G-6PD和PFK活性。结果 与麻醉前相比,Ⅰ组病人术后第1天血浆MDA浓度及红细胞G-6PD、AR活性显著性升高(P<0.05);血浆GSH浓度及红细胞PFK活性降低(P<0.05)。Ⅱ组以上各参数在术后第1天与麻醉前相比,差异均无显著性(P>0.05)。结论 异氟醚全麻联合硬膜外阻滞的麻醉方法可减轻手术创伤对红细胞糖代谢和机体氧化应激反应的影响。
Objective To study the changes in the polyol pathway of glucose metabolism and oxidative stress responses induced by general thoracic surgery by measuring erythrocyte aldose reductase (AR), phosphofructokinase (PFK) and glucose-6 phospate dehydrogenase (G-6PD) activities and plasma MDA and GSH levels before and after surgery performed under different anesthetic techniques. Methods Thirty-two ASA Ⅰ-Ⅱ patients aged 45-71 yrs weighing 55-70 kg were randomly allocated to one of two groups with 16 patients in each group : group Ⅰ received isoflurane inhalation for maintenance of anesthesia and group Ⅱ isoflurane inhalation combined with epidural block. Patients with endocrine and glucose metabolism-related diseases were excluded. The patients were premedicated with intramuscular phenobarbital 0.1 g and atropine 0.5 mg. Anesthesia was induced with intravenous midazolam 0.1 mg·kg-1 , propofol 1.0-1.5 mg·kg-1 , fentanyl 0.1-0.15 mg, droperidol 1-2 mg and vecuronium 0.1 mg·kg-1 in both groups. The patients were mechanically ventilated (VT 8-10 ml·kg-1, RR 10-12 bpm) after tracheal intubation. Anesthesia was maintained with isoflurane inhalation at 1.2-1.6 MAC in group Ⅰ or isoflurane inhalation (0.6-0.8 MAC) combined with epidural block (T9-10) with 1 % lidocaine in group Ⅱ supplemented with fentanyl 5-10 μg·kg-1 and droperidol 0.1-0.2 mg·kg-1 in divided doses and vecuronium infusion at 1-2 μg· kg·min-1 . Venous blood samples were obtained before anesthesia (baseline, T0), 90 min after skin incision (T1), 60 min after surgery (T2 ) and on the 1 st and 2nd postoperative days (T3 , T4 ) for determination of erythrocyte AR, PFK and G-6PD activities and plasma glucose, MDA and GSH levels. Results In group Ⅰ plasma MDA level and AR and G-6PD activities in erythrocyte were significantly increased, while plasma GSH level and PFK activity in erythrocyte were significantly decreased on the 1st postoperative day compared to the baseline values before anesthesia (T0) (P < 0.05) . In group Ⅱ there were no si
出处
《中华麻醉学杂志》
CAS
CSCD
北大核心
2004年第11期809-812,共4页
Chinese Journal of Anesthesiology
基金
江苏省自然科学基金(BJ97003)
