Controlled Clinical Studies Of Injecting Ropivacaine Analgesic In The Calot’s Triangle Undegonging Laparoscopic Cholecystectomy

ObjectiveTo investigate the effects of postoperative analgesia in the calot’striang lelocal infiltration anesthesia with injecting ropivacaine, and thechange of plasma cortisol， blood glucose on patients undergoinglaparoscopic cholecystectomy（LC）.MethodsSixty patients （ASAI-II）undergoing elective LC were randomlydivided into two groups with30patients in each group.The patientsreceived injecting ropivacaine in the calot’s triangle local infiltrationanesthesia in surgery（experimental group）.Control group was given0.9%NaCl.Pain degree、 comfort score and Ramsay sedation score weremeasured at2h，6h，12h，24h，and48h after operation in the twogroups.Plasma cortisl，blood glucose were measured before operation，at6h，24h，and48h after operation in the two groups.ResultsThe postoperative pain：the VAS values in experimental group wasmuch lower than in control group（P＜0.05）. The comfort score in experimental group was much higher than in control group（P＜0.05）. TheRamsay sedation score in experimental group was much lower than incontrol group（P＜0.05）.The levels of plasma cortisol，blood glucose weresignificantly increased after the prodedure compared with those before inboth the two grups（P＜0.05）.It declined to preoperative level on thepostoperation2ndday in the experimental group（P＞0.05）.The levels ofplasma cortisol and blood glucose in experimental group were lower at6h，24h after operation than that in control group（P＜0.05）. The levels ofplasma cortisol and blood glucose had no significante difference at48hafter operation（P＞0.05）.ConclusionsPostoperation pain，requirement of pain-killer and stress response afterLC can be significantly reduced by calot’s triang lelocal infiltrationanesthesia.