IRCT20201007048962N1 IRCT 2020-12-17 Tehran University of Medical Sciences The efficacy of laparoscopic Transversus Abdominis Block on pain and side-effects reduction of surgery Evaluating the efficacy of laparoscopic Transversus Abdominis Block on pain and side-effects reduction in laparoscopic bariatric surgeries in Imam Khomeini hospital complex in 2020-2021 2020-11-21 anticipated 36 Complete https://irct.ir/trial/51519 interventional Randomization: Randomized, Blinding: Triple blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: At first, patients undergoing laparoscopic obesity surgery will randomly divided into two groups. Random assignment will be by Block randomization method, in which 5 pieces of paper with T and 5 with C written on them are placed in a bag and mixed, and then one piece of paper will be allocated for each patient admitted to the study. According to what is written on the paper, the patient goes to one of the two groups and for the next 10 patients, the papers are returned to the bag and the process is repeated, Blinding description: In the intervention group, a syringe containing anesthetic will be injected. In the control group, a syringe containing normal saline and free of any anesthetic will be provided to the surgeon. So that the surgeon will not know which syringe contains the anesthetic. Injections will be given to all patients. Patients will not know which group they are in. The person collecting the information and analyzing it will not know which group had the anesthetic injection and will only have the group title in English letters. N/A Condition 1: Laparoscopic bariatric surgery. Condition 2: postprocedural pain. Intervention 1: Intervention group: The Braun Stimuplex Ainsulated needle will enter the skin from the mid-axillary line between the iliac crest and the rib margin. The needle is advanced to the distance between the internal and transverse oblique muscles of the abdomen using a laparoscopic camera and under the direct supervision of a surgeon, and then anesthesia is injected into patients in this area. In this injection, 0.5% marcain solution at the rate of 0.5 mg per kg of body weight will be used. Intervention 2: Control group: The Braun Stimuplex Ainsulated needle will enter the skin from the mid-axillary line between the iliac crest and the rib margin. The needle is advanced to the distance between the internal and transverse oblique muscles of the abdomen using a laparoscopic camera and under the direct supervision of a surgeon, and then normal saline is injected into patients in this area. Yes - There is a plan to make this available What will be shared: All data is potentially shareable after unidentified individuals When: The access period starts 3 months after the results are published To whom: It will be available only to researchers working in academic and scientific institutions Conditions: The reason for the need for data to be decided Where to obtain: Mohammadhadi Bahri m.bahri@abzums.ac.ir How to obtain: An email must be sent with the reason for the need for data and their email will be answered within 2 weeks. Comments: