IRCT20230523058263N1 IRCT 2023-05-31 Karaj University of Medical Sciences Comparison of local infiltration and intra-peritoneal instillation of Ropivacaine effect on post-op pain, nausea, vomiting and analgesic requirement in laparoscopic cholecystectomy Comparison of local infiltration and intra-peritoneal instillation of Ropivacaine effect on post-op pain, nausea, vomiting and analgesic requirement in laparoscopic cholecystectomy 2024-02-19 anticipated 120 Complete https://irct.ir/trial/70288 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: block randomization is used in this study. Lenght of block is 6 for each treatment groups, it means that each block consists of 2 persons from intervention and 2 persons from control group. We have intervention group 1(A), group 2(B) and control group(C). Thus according to n!------------ r!(n!-r!) there will be 20 of 6pcs subgroup like (AA,BB,CC) and its different states. Then by using Excel, randomly, one of these blocks will be choosen and based on A B C in block, eligible persons allocated to treatment or control groups and continued to appropriate study volume, Blinding description: This is a double blinded study, so that evaluator and participants don't know about group allocation. We inform participants about the procedure and that they receive one of treatments randomly and it is not possible for patients to detect which group they are in. 3 cholecystectomy. Intervention group: First group receive 20 cc 0.5% Ropivacaine intra-dermal in port's place. Second group as same but intra-peritoneally and third group (control) which received nothing.. No - There is not a plan to make this available Justification or reason for not sharing IPD is there is no further information