Safety and efficacy of pleural transversal midpoint block in radical mastectomy
Objective To explore the safety and effectiveness of pleural transversal midpoint block in radical mastectomy.Method 70 patients undergoing breast cancer surgery were selected as the research subjects.The patients were divided into study group and control group according to random number table method.There were 35 cases in each group.After induction of anesthesia,the study group was given pleural transitory intermediate point block(MTP),and the control group was received routine anesthesia reg-imen.The primary outcome measure was the amount of opioid analgesic drugs added during the perioperative period,and the secondary outcome measure was ① 1,2,4,12,24 h postoperative digital grading(NRS score);②Postoperative analgesic drug use;③ Postop-erative adverse reactions(Nausea,vomiting,dizziness,chills,pneumothorax,hematoma,general spinal anesthesia).Results Com-pared with the control group,the dosage of remifentanil and propofol in the study group was lower,and the difference was statistically significant(P<0.05).There was no significant difference in operation time between the two groups(P>0.05).Compared with the control group,VAS scores in the study group at 1h,2h and 4h after surgery were lower,and the difference was statistically significant(P<0.05).There was no significant difference in VAS scores at 12h and 24h between the two groups(P>0.05).Compared with the control group,the probability of postoperative nausea,vomiting and dizziness in patients with MTP block in the study groupwas lower,and the difference was statistically significant(P<0.05).Conclusion Compared with conventional general anesthesia,ultrasound-guided pleural transversal midpoint block can effectively reduce the amount of opioid analgesics in patients undergoing modified radical mastectomy,At the same time,the postoperative analgesia is better,and the incidence of postoperative adverse reactions is lower.