Analgesic efficacy of bilateral erector spinae plane block on T12 for lumbar spine surgery:A prospective,double-blind,randomized,controlled trail
Objective To investigate the analgesic efficacy of bilateral T12 erector spinae plane block in lower lumbar spine surgery.Methods 60 patients undergoing lumber spine surgery with general anesthesia were included.All patients met the inclusion criteria.They were randomly divided into two groups:Group E and Group C.2 Patients in Group E dropped out the trail and 58 patients were finally enrolled in this trail.Patients in group E(n=28)received bilateral erector spinae plane block at T12 with 30 ml of 0.3%ropivacaine for each side 30 minutes before the surgery.Patients in group C(n=30)received 0.9%30 ml saline for each side 30 minutes before the surgery.The primary outcome was sufentanil consumption during the surgery.Secondary outcomes included 2 indicators.The first indicator included sufentanil consumption in the postoperative anesthesia recovery room(PACU)and 12 h,24 h after the surgery.The second indicator was visual analogue scale(VAS)score performing at the time of after tracheal extubating immediately,leaving PACU,and 12 h,24 h after the surgery.Results Sufentanil consumption during the surgery in group E was significantly lower than in group C(Z=2.446,P=0.014).Compared with group C,immediate VAS score after tracheal extubating in group E was significantly lower(Z-4.163,P<0.001).When leaving the PACU,VAS score in group E was significantly lower than in group C(Z=3.347,P=0.001).Meanwhile,sufentanil consumption in group E was also distinctly lower than in group C at the time of leaving PACU(Z=3.092,P=0.002).There were no differences in VAS scores at the time of 12 h and 24 h after the surgery between the two groups(Z=1.084,0.658,P=0.278,0.551).Sufentanil consumption at the time of 12 h and 24 h after the surgery between group E and group C didn't show any statistical difference(Z=0.329,0.765,P=0.742,0.444).Conclusion Bilateral T12 erector spinae plane block can provide effective analgesia during operation and in PACU.