Application of ultrasound-guided dexmedetomidine combined with ropivacaine for continuous adductor canal block in arthroscopic knee surgery
Objective To explore the application effect of ultrasound-guided dexmedetomidine combined with ropivacaine for continuous adductor canal block(ACB)under ultrasound guidance in patients undergoing arthroscopic knee surgery.Methods A total of 85 patients undergoing arthroscopic knee surgery were randomly divided into compound group(43 cases)and single group(42 cases).All patients were treated with ultrasound-guided ACB after general anesthesia induction,and the ACB analgesia pump was turned on after operation.The single group was treated with ropivacaine for analgesia,and the compound group was treated with dexmedetomidine combined with ropivacaine for analgesia.Visual analogue scale(VAS)was used to evaluate the pain degree and the active flexion angle of knee joint between the 2 groups at 6,12,24 and 48 hours after operation.The levels of serum pain factor[substance P(SP)and prostaglandin I2(PGI2)]before operation and at 24,48 hours were compared between the 2 groups.The time of getting out of bed for the first time and the time of active knee flexion after operation were compared between the 2 groups.Results At 6,12,24,48 hours after the operation,the VAS of patients in the compound group were lower than those in the single group,and the serum SP and PGI2 levels in the compound group were lower than those in the single group at 24 and 48 hours after operation(P<0.05).At 6,12,24,48 hours after the operation,the active flexion angle of the knee joint in the compound group was greater than that in the single group,and the time of get out of bed for the first time and the time of active flexion of knee joint to 90° after operation in the compound group were shorter than that in the single group(P<0.05).Conclusion Ultrasound-guided dexmedetomidine combined with ropivacaine ACB in patients with knee arthroscopy can reduce the expression of pain factors,reduce the pain degree of patients,and promote the recovery of knee function in patients after surgery.
dexmedetomidineropivacaineadductor canal blockknee arthroscopypain factorsknee function
万方数据
维普
