胆道梗阻时胆道压力对胆汁中左氧氟沙星药物浓度的影响

目的前瞻性研究胆道梗阻对抗生素左氧氟沙星向胆汁中弥散产生的影响。为临床胆道梗阻合并胆道感染患者的抗生素选择提供实验证据。方法临床急性重症胆管炎（ACST）患者15例为研究对象,分别术前30 min静脉滴注抗生素左氧氟沙星0.3 g。术中测量胆道压力,于给药1 h后收集胆汁标本以高效液相色谱技术（HPLC）检测胆汁药物浓度。并与对照组进行胆道压力？胆汁内抗生素浓度的比较,应用统计软件进行差异显著性分析及相关性分析。结果ACST组患者胆道压力较对照组胆道压力明显升高（P〈0.01）。胆道压力升高时,静脉注射抗生素1h后的胆汁内抗生素浓度明显降低,两者呈负相关。结论左氧氟沙星在正常胆道压力情况下胆汁浓度难以达到有效杀菌浓度。当胆道压力升高到一定范围以上后,胆汁内无抗生素分布,此时行手术胆道减压是唯一有效的治疗途径。

Effect of biliary pressure on antibiotic(levofloxacin)concentration in bile

Aim To evaluate the effect of bile obstruction on biliary secretion of levofloxacin sodium,and to look for useful parameters to guide clinical use of antibiotics in patients with acute cholangitis.Method 15 ACST patients were studied.All the patients were administered intravenously with levofloxacin sodium.Bile was collected after 1h for assaying the concentration of levofloxacin in the biles by high performance liquid chromatography(HPLC),for further study.Their biliary pressure was measured and the antibi...