Abstract：Objective To study the clinical effect of Ropivacaine combined with Dexmedetomidine erector spinal block in thoracic spine surgery.Methods A total of 60 patients who planned to receive thoracic surgery in Ganzhou People′s Hospital from June 2019 to November 2020 were selected as the research objects.They were divided into experimental group and control group by random number table method,with 30 patients in each group.The control group was given Ropivacaine erector plane block during thoracic surgery,and the experimental group was given Ropivacaine combined with Dexmedetomidine erector plane block.The operation center rate,mean arterial pressure,dosage of general anesthetics,recovery time of post-anesthesia recovery room(PACU)and complications in recovery period were compared between the two groups.The visual analogue scale (VAS)score at 2,4,8 and 12 h after operation,the number of intravenous analgesic compressions and the satisfaction of patients were compared.Results The operation center rate and mean arterial pressure in the experimental group were lower than those in the control group,the dosage of general anesthesia was lower than that in the control group,and the time of PACU recovery was shorter than that in the control group,the differences were statistically significant(P<0.05).VAS scores of both groups at 4,8 and 12 h after operation were higher than those of this group at 2 h after block,and VAS scores of the experimental group at different time points were lower than those of the control group,the differences were statistically significant(P<0.05).There was no significant difference in the total incidence of complications between the two groups(P>0.05).Conclusion Ultrasonicguided ropivacaine combined with dexmedetomidine erector spinal muscle plane block can be used for thoracic spine surgery analgesia.Dexmedetomidine can significantly prolong the action time of ropivacaine,provide a more complete analgesic effect,and is conducive to the rapid postoperative recovery of patients undergoing thoracic surgery.
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