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11.
Objective To evaluate the accuracy of auditory evoked potential index (AAI) in monitoring the anesthetic depth during isoflurane anesthesia.Methods Thirty ASA Ⅰ or Ⅱ patients aged 18-55 years and undergoing elective surgery under general anesthesia were enrolled in this study. The patients were unpremedicated. Anesthesia was induced with midazolam 0.05 mg/kg, fentanyl 3 μg/kg and propofol 1 mg/kg. Tracheal intubation was facilitated with recuronium 0.1 mg/kg. The patients were mechanically ventilated (VT:40 mm Hg. Anesthesia was maintained with isoflurane inhalation and intermittent intravenous boluses of vecuronium. Isoflurane was started with high-flow (FGF, 3 L/min) for 12 min followed by low-flow (LGF, 0.5 L/min). The inspired isoflurane concentration was set at 3%. The electrocardiogram (ECG), mean arterial pressure (MAP), heart rate (HR), pulse oxygen saturation (SpO2), end-tidal isoflurane concentration and AAI were continuously monitored during anesthesia and recorded before induction of anesthesia (baseline, To ), immediately after induction (T1), immediately before isoflurane inhalation (T2), at 3 min(T3), 6 min (T4), 9 min (T5) and 12 min (T6) during high-flow wash-in and at the end-tidal isoflurane concentrations of 0.8 MAC (T7), 1.0 MAC (T8) and 1.3 MAC (T9) during low-flow inhalation of isoflurane, respectively.Results AAI decreased gradually while the end-tidal isoflurane concentration increased during high-flow wash-in. And AAI was negatively correlated with the end-tidal isoflurane concentrations ( r = -0.896, P < 0.01 ) during low-flow inhalation of isoflurane anesthesia. 相似文献
12.
目的:观察氟比洛芬酯在后颅窝手术术后镇痛的疗效及安全性.方法:将40例择期后颅窝手术的患者分成氟比洛芬酯组(F组,20例)和对照组(C组,20例).F组于切皮前10min及缝皮前10min分别给予氟比洛芬酯50、100 mg;C组在相应时间给予5、10 mL的脂肪乳剂.观察两组患者术后4、8、24 h的血压,心率、呼吸及VAS评分、Ramsay评分的变化.结果:F组患者在术后各时点的VAS评分均小于C组(P<0.05);两组患者术后Ramsay评分差异无显著性(P>0.05);C组患者术后4 h的血压、心率较术前升高,差异有显著性(P<0.05),而F组患者术后各时点的血压、心率与术前相比差异无显著性(P>0.05).结论:氟比洛芬酯可有效抑制后颅窝手术术后疼痛,且无明显不良反应. 相似文献