地塞米松对重复腋路臂丛阻滞麻醉效果的影响

目的局麻药混合液中添加地塞米松与单用局麻药混合液施行重复腋路臂丛阻滞 ,观察麻醉效果。方法两组200病例中 ,臂丛阻滞1000次。随机分为两组 ,观察组(A组)与对照组(B组)均使用2 %利多卡因20ml(400mg)与0 5 %布比卡因20ml(100mg)混合液 ,其中A组添加地塞米松1ml(5mg)。结果在作用完全时间、维持时间和阻滞完全方面 ,A组显著优于B组 ,而且A组整个手术期间和术后无任何不良反应。结论局麻药液中添加地塞米松 ,作用完全时间不受阻滞次数的影响 ,并能显著延长作用维持时间 ,阻滞次数愈多 ,麻醉效果愈能显示出地塞米松的作用

Influence of dexamethasone on the repeated axillary brachial plexus block

Aim The effect of dexamethasone added in anesthetic mixture was retrospectively analysed.Method Two hundrad patients who had each received 5 blocks were divided into two groups. In group B the patients were blocked with an anesthetic mixture consisting of 20ml of 2% lidocaine and 20ml of 0.5% bupivacaine, while in group A, the anesthetic mixture was added by 1ml (5mg) of dexamethasone.Result The onset of complete block and the sustained time in group A were better than those in group B, and there was no harmful effect during the operation or postoperative period.Conclusion Dexamethasone added in anesthetic mixture could prolong the anesthetic action which is not influenced by the block times and the more the block times, the more significant is the dexamethasone action.