氟比洛芬酯静脉注射后在患者脑脊液的分布情况

目的 通过测定静脉注射氟比洛芬酯后脑脊液氟比洛芬的浓度,研究其在脑脊液的分布情况.方法拟在腰麻或脊椎-硬膜外联合麻醉下行下腹部或下肢手术的患者72例,年龄18～75岁,体重54～82 kg,性别不限,ASA分级Ⅰ或Ⅱ级,静脉注射氟比洛芬酯1 mg/kg,于静脉注射后45 min内每5 min(T1～9)随机取8例患者,留取脑脊液2 ml,同时抽取静脉血3 ml,采用反向高压液相色谱法测定脑脊液和外周血氟比洛芬的浓度,并计算脑脊液和外周血氟比洛芬浓度的比值(脑脊液/外周血比值).结果 所有血标本均可检测到氟比洛芬,T1,2时分别有3份、4份脑脊液标本未检测到氟比洛芬,其余时点脑脊液标本均检测到氟比洛芬.与T3时比较,L4～9时脑脊液氟比洛芬浓度升高,T5～9时脑脊液,外周血比值升高(P＜0.05);L4～9时脑脊液氟比洛芬浓度差异无统计学意义(P＞0.05).结论 氟比洛芬酯静脉注射后可在脑脊液分布,注射后20 min达峰值,持续至注射后45 min.

Abstract：

Objective To examine the distribution of flurbiprofen axetil in cerebral-spinal fluid (CSF) by determining the CSF concentration of flurbiprofen after iv administration. Methods Seventy-two ASA Ⅰ or Ⅱ patients of both sexes aged 18-75 yr weighing 54-82 kg undergoing spinal or combined spinal-epidural anesthesia for lower extremity or lower abdominal surgery were studied. Flurbiprofen axetil 1 mg/kg was injected intravenously.CSF 2 ml and venous blood 3 ml were obtained simultaneously every 5 min after iv injection for 45 min (T1-9 ) for determination of flurbiprofen concentration using high performance liquid chromatography, and the CSF/blood flurbiprofen concentration ratio was caculated. Results Flurbiprofen was not detected in CSF at T1,2 after iv injection in 3 and 4 patients. The CSF flurbiprofen concentration was significantly higher at T4-9, and CSF/blood flubiprofen concentration ratio higher at T5-9 than at T3 ( P ＜ 0.05). There was no significant difference in CSF flurbiprofen concentrations among T4-9 ( P ＞ 0.05 ) Conclusion Flurbiprofen is detected in CSF after iv injection, the CSF flurbiprofen concentration peaks at 20 min after iv injection and it lasts until 45 min after iv injection.

Distribution of flurbiprofen axetil in cerebral-spinal fluid after intravenous administration

Objective To examine the distribution of flurbiprofen axetil in cerebral-spinal fluid (CSF) by determining the CSF concentration of flurbiprofen after iv administration. Methods Seventy-two ASA Ⅰ or Ⅱ patients of both sexes aged 18-75 yr weighing 54-82 kg undergoing spinal or combined spinal-epidural anesthesia for lower extremity or lower abdominal surgery were studied. Flurbiprofen axetil 1 mg/kg was injected intravenously.CSF 2 ml and venous blood 3 ml were obtained simultaneously every 5 min after iv injection for 45 min (T1-9 ) for determination of flurbiprofen concentration using high performance liquid chromatography, and the CSF/blood flurbiprofen concentration ratio was caculated. Results Flurbiprofen was not detected in CSF at T1,2 after iv injection in 3 and 4 patients. The CSF flurbiprofen concentration was significantly higher at T4-9, and CSF/blood flubiprofen concentration ratio higher at T5-9 than at T3 ( P ＜ 0.05). There was no significant difference in CSF flurbiprofen concentrations among T4-9 ( P ＞ 0.05 ) Conclusion Flurbiprofen is detected in CSF after iv injection, the CSF flurbiprofen concentration peaks at 20 min after iv injection and it lasts until 45 min after iv injection.