Effects Of Perioperative Transcutaneous Electrical Acupoint Stimulation On Postoperative Analgesia In Patients Undergoing Shoulder Arthroscopic Surgery

Objective:To observe and evaluate the postoperative analgesic effect of transcutaneous electrical acupoint stimulation(TEAS)at different time points in perioperative period of shoulder arthroscopic surgery,in order to find the appropriate time to use TEAS in shoulder arthroscopic surgery.Methods:120 patients with ASA graded Ⅰ to Ⅱ undergoing unilateral shoulder arthroscopy under general anesthesia were selected.These patients were randomly divided into three groups(n = 40).The patients in group A were treated with preoperative TEAS at sham acupoints combined with postoperative TEAS at Hegu and Neiguan;the patients in group B were treated with preoperative TEAS at Hegu and Neiguan combined with postoperative TEAS at sham acupoints;the patients in group C were treated with TEAS at sham acupoints before and after operation.The parameters of TEAS were dilatational wave,2 Hz/100 Hz in frequency,30 min.When the VAS score at rest was more than 3,a bolus of sufentanil in patient controlled intravenous analgesia(PCIA)pump would be administered,and the duration between the end of surgery and the first bolus of PCIA was recorded.The dose of sufentanil in the analgesic pump and the number of effective compressions within 24 hours after surgery were recorded.Intraoperative anesthetic doses were recorded in three groups.At 0,6,12,24hours after surgery VAS score at rest and during activity were recorded.At the same time,the patient’s satisfaction rate、the usage rate of PCIA and adverse effects were recorded.Results:Compared with group C,the duration between the end of surgery and the first bolus of PCIA pump in group A and group B were significantly longer(p<0.001),while the dose of sufentanil and the number of effective compressions in the PCIA pump were reduced within postoperative 24 hours(p<0.001).At the same time,the incidence of postoperative nausea and vomiting and sore throat was reduced(p<0.05).Compared with group B,the duration between the end of surgery and the first bolus of PCIA pump was prolonged in group A,while the dose of sufentanil and the number of effective compressions in the PCIA pump were reduced within postoperative 24 hours(p<0.001),and adverse effects were comparable(p>0.05).Conclusion:Perioperative period of TEAS can improve the postoperative analgesia in patients undergoing arthroscopic shoulder surgery,delay the first bolus of PCIA pump and reduce the related adverse events.Compared with the preoperative TEAS,the postoperative TEAS provided better postoperative analgesia in patients undergoing shoulder arthroscopic surgery.