摘要目的 评价钢丝加强型聚脲胺酯硬膜外导管对剖宫产术患者硬膜外置管术成功几率的影响.方法 择期拟行脊椎-硬膜外联合阻滞的剖宫产术患者182例,年龄25～ 43岁,身高145～178 cm,体重51 ～ 100 kg,ASA分级Ⅰ或Ⅱ级,采用随机数字表法分为2组:聚氯乙烯硬膜外导管组(Ⅰ组,n=94)和钢丝加强型聚脲胺酯硬膜外导管组(Ⅱ组,n=88).于L23或L34间隙行脊椎-硬膜外穿刺,穿刺成功后各组置入相应的硬膜外导管.发生置管困难、导管误入血管和穿刺或置管时异感均为硬膜外置管术失败.记录硬膜外置管术失败的发生情况.结果 Ⅰ组比较,Ⅱ组硬膜外置管术失败率降低(P＜0.05).结论 钢丝加强型聚脲胺酯硬膜外导管可提高剖宫产术患者硬膜外置管术的成功几率.

abstractsObjective To evaluate the effect of wire-reinforced polyurethane epidural catheters on the success rate of epidural catheterization in the patients undergoing caesarean section.Methods A total of 182 pregnant patients,aged 25-43 yr,with body height of 145-178 cm,weighing 51-100 kg,of American Society of Anesthesiologists physical status Ⅰ or Ⅱ,scheduled for elective caesarean section under combined spinal-epidural anesthesia,were divided into 2 groups using a random number table:polyvinyl chloride epidural catheter group (group Ⅰ,n =94) and wire-reinfnrced polyurethane epidural catheter group (group 11,n=88).Spinal or epidural puncture was performed at L2,3 or L3,4 interspace,and the corresponding epidural catheter was inserted in each group aficr succcssful puncturc.Thc dcvclopment of difficult insertion,intravascular catheter insertion or paresthesia during puncture or insertion was defined as a failure of epidural catheterization.The occurrence of failed epidural catheterization was recorded.Results The failure rate of epidural catheterization was significantly lower in group 1Ⅱ than in gronp Ⅰ (P＜0.05).Conclusion Wire-reinforced polyurethane epidural catheters can raise the success rate of epidural catheterization in the patients undergoing caesarean section.