Effect of Intravenous Injection of Dexamethasone on Rebound Pain after Shoulder Arthroscopic Rotator Cuff Repair Surgery under Intermuscular Groove Brachial Plexus Block

QIU Ling; LIN Xingwu; CHEN Xiaomei

doi:10.14033/j.cnki.cfmr.2025.11.004

Abstract：Objective:To investigate the effect of intravenous injection of Dexamethasone on rebound pain after shoulder arthroscopic rotator cuff repair surgery under intermuscular sulcus brachial plexus block(ISBPB).Method:The clinical data of 94 patients who underwent shoulder arthroscopic rotator cuff repair surgery in Fuzhou Second General Hospital from June 2022 to May 2024 were retrospectively analyzed,they were divided into the control group(ISBPB combined with general anesthesia)and the combined group(intravenous injection of Dexamethasone on the basis of the control group)according to whether Dexamethasone was injected,47 cases in each group.The incidence of rebound pain at 48 h after operation,duration of analgesia,time of first request for analgesia,maximum numerical rating scale(NRS)score within 48 h after operation,number of patient controlled intravenous analgesia(PCIA)pressing times and remedial analgesia times were compared between two groups,the first rebound pain time,the first NRS score and rebound pain duration between two groups of patients with rebound pain,the occurrence of adverse reactions(dizziness,nausea and vomiting,hematoma,nerve paralysis)in the two groups was counted.Result:The incidence of rebound pain at 48 h after operation in the combined group was lower than that in the control group,and the duration of analgesia and the time of first request for analgesia were longer than those in the control group,the differences were statistically significant(P<0.05).There were no significant differences in the maximum NRS score,PCIA pressing times and remedial analgesia times between two groups at 0-12 h and 25-48 h after operation(P>0.05);the maximum NRS score in the combined group at 13-24 h after operation was lower than that in the control group,and the number of PCIA pressing times and remedial analgesia times were less than those in the control group,the differences were statistically significant(P<0.05).The first rebound time of patients with rebound pain in the combined group was longer than that in the control group,and the difference was statistically significant(P<0.05);there were no statistically significant difference in the first NRS score and rebound pain duration between two groups of patients with rebound pain(P>0.05).There were no significant differences in the incidence of dizziness,nausea and vomiting,hematoma and nerve paralysis between two groups(P>0.05).Conclusion:Intravenous injection of Dexamethasone can help reduce rebound pain after shoulder arthroscopic rotator cuff repair surgery under ISBPB,prolong analgesia time,and reduce and delay pain increase.