학술논문
右美托咪定对体外循环心脏手术病人脑损伤的影响 / Effect of dexmedetomidine on brain injury in patients undergoing cardiac surgery with cardiopulmonary bypass
Document Type
Academic Journal
Author
Source
中华麻醉学杂志 / Chinese Journal of Anesthesiology. 35(11):1321-1324
Subject
Language
Chinese
ISSN
0254-1416
Abstract
目的 评价右美托咪定对体外循环(CPB)心脏手术病人脑损伤的影响.方法 择期CPB心脏手术病人80例,年龄18 ～ 64岁,性别不限,体表面积1.6～ 2.0 m2,左室射血分数＞30％,心功能分级Ⅱ或Ⅲ级,ASA分级Ⅱ或Ⅲ级.采用随机数字表法,将病人分为2组:对照组(C组)和右美托咪定组(D组).常规麻醉诱导前D组经10 min静脉输注右美托咪定1μg/kg,随后以0.5 μg·kg-1·h-1速率输注至术毕;C组给予等容量生理盐水.分别于麻醉诱导后切皮前(T0)、CPB开始后30 min(T1)、术毕(T2)、术后4 h(T3)、术后24 h(T4)及术后72 h(T5)时采集颈静脉球部血样,检测血清肿瘤坏死因子α(TNF-α)、白细胞介素-6(IL-6)、白细胞介素-10(IL-10)、星形胶质细胞S100蛋白的β亚型(S-100β)及神经元特异性烯醇化酶(NSE)的浓度.结果 与C组比较,D组T1-3时血清TNF-α和S-100β的浓度降低,T1-4时血清IL-6和NSE的浓度降低,T1-4时血清IL-10浓度升高(P＜0.05).结论 常规麻醉诱导前静脉输注右美托咪定1μg/kg,随后以0.5 μg·kg-1·h-1速率输注至术毕可减轻CPB心脏手术病人脑损伤,其机制与抑制炎性反应有关.
Objective To evaluate the effect of dexmedetomidine on brain injury in the patients undergoing cardiac surgery with cardiopulmonary bypass (CPB).Methods Eighty patients of both sexes, aged 18-64 yr, with body surface area of 1.6-2.0 m2, with left ventricular ejection fraction＞30％, of American Society of Anesthesiologists physical status Ⅱ or Ⅲ (New York Heart Association Ⅱ or Ⅲ), scheduled for elective cardiac surgery with CPB, were equally and randomly divided into control group (group C) and dexmedetomidine group (group D) using a random number table.Before induction of anesthesia, dexmedetomidine was given as a bolus of 1 μg/kg over 10 min followed by an infusion of 0.5 μg · kg-1 · h-1 throughout the surgery in group D, and the equal volume of normal saline was given in group C.After induction and before skin incision (T0) , at 30 min after beginning of CBP (T1) , at 30 min after the end of CBP (T2) , at the end of surgery (T3) , and at 24 and 72 h after surgery (T4.5) , blood samples from jugular bulb were drawn for determination of serum concentrations of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), IL-10, S-100β protein and neuron-specific enolase (NSE).Results Compared with group C, the serum concentrations of TNF-α and S100β at T1-3 and IL-6 and NSE at T1.4 were significantly decreased, and the serum concentrations of IL-10 at T1-4 were increased in group D (P＜0.05).Conclusion Dexmedetomidine given as a bolus of 1 μg/kg over 10 min followed by an infusion of 0.5 μg · kg-1 · h-1 throughout the surgery can reduce the brain injury in the patients undergoing cardiac surgery with CPB, and the mechanism is related to inhibited inflammatory responses.
Objective To evaluate the effect of dexmedetomidine on brain injury in the patients undergoing cardiac surgery with cardiopulmonary bypass (CPB).Methods Eighty patients of both sexes, aged 18-64 yr, with body surface area of 1.6-2.0 m2, with left ventricular ejection fraction＞30％, of American Society of Anesthesiologists physical status Ⅱ or Ⅲ (New York Heart Association Ⅱ or Ⅲ), scheduled for elective cardiac surgery with CPB, were equally and randomly divided into control group (group C) and dexmedetomidine group (group D) using a random number table.Before induction of anesthesia, dexmedetomidine was given as a bolus of 1 μg/kg over 10 min followed by an infusion of 0.5 μg · kg-1 · h-1 throughout the surgery in group D, and the equal volume of normal saline was given in group C.After induction and before skin incision (T0) , at 30 min after beginning of CBP (T1) , at 30 min after the end of CBP (T2) , at the end of surgery (T3) , and at 24 and 72 h after surgery (T4.5) , blood samples from jugular bulb were drawn for determination of serum concentrations of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), IL-10, S-100β protein and neuron-specific enolase (NSE).Results Compared with group C, the serum concentrations of TNF-α and S100β at T1-3 and IL-6 and NSE at T1.4 were significantly decreased, and the serum concentrations of IL-10 at T1-4 were increased in group D (P＜0.05).Conclusion Dexmedetomidine given as a bolus of 1 μg/kg over 10 min followed by an infusion of 0.5 μg · kg-1 · h-1 throughout the surgery can reduce the brain injury in the patients undergoing cardiac surgery with CPB, and the mechanism is related to inhibited inflammatory responses.