右美托咪定對(duì)全麻下腦功能區(qū)腫瘤切除術(shù)喚醒試驗(yàn)中應(yīng)激反應(yīng)的影響
[Abstract]:Objective to evaluate the effect of dexmetomidine on stress response in patients undergoing brain functional area tumor resection under general anesthesia with propofol and remifentanil. Methods Forty-eight patients undergoing intraoperative arousal test were randomly divided into two groups: dexmetomidine group and control group. Before anesthesia induction, 10min received intravenous infusion of 0.8 渭 g/kg dexmetomidine in dexmetomidine group. Then maintained with 0.4 渭 g kg-1 h-1, the control group received intravenous infusion of the same amount of normal saline. Propofol and remifentanil were induced and maintained by target-controlled infusion. Propofol and muscle relaxant were stopped by 30min before arousal test. The plasma concentration of remifentanil was adjusted to 1 ng / ml, and the infusion rate of dexmetoimidine was 0.1 渭 g kg-1 h-1. The anaesthesia time before arousal, the dosage of anesthetic and the arousal time were recorded, and the MAP,HR and BIS values were recorded at 30min (T1), wake-up (T2), 5min (T3) after arousal and 10min (T4) after the end of the study, respectively. Plasma norepinephrine (NE) and epinephrine (E) concentrations were recorded. Results there was no significant difference in arousal time, anaesthesia time before arousal and the dosage of cisatracurium between the two groups. Compared with the control group, the dosage of propofol and remifentanil before arousal was significantly decreased in dexmetomidine group (P0.05). Compared with T 1, T 2 and T 3, MAP and BIS were significantly increased in both groups (P0.05). Compared with the control group, the MAP of right metoimidine group was significantly lower than that of control group (P 0.05). The HR of right metoimidine group was significantly lower than that of control group (P 0.05). The concentration of NE and E in right metoimidine group was significantly lower than that in right metoimidine group at T4 and T4 (P0.05), while the patients in right metoimidine group were restless and tachycardia. The incidence of cough and hypertension decreased significantly (P0.05). There was no significant difference in BIS between the two groups at each time point. Conclusion dexmetomidine has a good inhibitory effect on stress response in brain functional area tumor resection under general anesthesia with propofol and remifentanil. It can reduce plasma NE and E concentrations and have little effect on hemodynamics. The incidence of adverse reactions decreased.
【作者單位】: 河南省新鄉(xiāng)市中心醫(yī)院麻醉科;
【分類號(hào)】:R614;R739.4
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