The application of three-point nerve block anesthesia in old patients undergoing lower limb surgery

【Objective】 To compare the anesthetic effect between lumbar plexus-sciatic-femoral plexus nerve block guided by nerve stimulator and epidural block in old patients undergoing lower limb surgery.【Methods】 110 old patients,ASA physical status of Ⅰ～Ⅲ,undergoing lower limb surgery were allocated into two groups: lumbar plexus-sciatic-femoral plexus nerve block group(A group,n =55) and epidural block group(B group,n =55).The change of blood pressure and the heart rate was recorded before two groups of patients are anaesthetized,when operations begin and over.Up-effect time and sustained time of feeling and motion block,block effect of two groups of patients were observed.【Results】 The blood pressure reduced obviously and heart rate increased quickly when operation begun in the B group,and it continued until operation was over(P 0.05),but the change was not obvious in the A group(P 0.05).The up-effect time of feeling and motion block was shorter obviously,the sustained time of feeling and motion block was longer in the A group than in the B group(P 0.05).Anaesthesia effect of two groups of patients had no obvious difference(P 0.05).The pain arousing from the tourniquet didn't appear during the operations.【Conclusion】 The three-point nerve block anesthesia guided by nerve stimulator with stabile blood flow mechanics,consummate anaesthesia effect and less complication is fit to the old patients undergoing lower limb surgery.