A comparison between ultrasound guided bilateral subcostal transversus abdominis plane block versus intraperitoneal instillation of local anaesthetic for postoperative analgesia in laparoscopic cholecystectomy patients: A prospective randomised comparative clinical study

The aim of our study is to evaluate and compare the efficacy of postoperative analgesia provided by Transversus Abdominis Plane block and intraperitoneal instillation of local anaesthetic solution in patients who are undergoing laparoscopic cholecystectomy. 80 patients belonging to the age group 18 to 70 years with ASA status I, II or III are randomly selected into two groups. Group T are those patients who received Ultrasound guided bilateral subcostal Transversus Abdominis plane block using 30mL of 0.25% Bupivacaine local solution just after the induction of general anaesthesia and Group L are those who received intraperitoneal instillation of 30mL of 0.25% of Bupivacaine local solution under vision just after trocar insertion and before the start of the surgery. Intraoperative hemodynamic stability is monitored among the two groups by monitoring the HR,BP,SpO2 and EtCO2. Postoperatively the time taken for the administration of the first dose of rescue analgesia at VAS >=4 is also noted among the two groups. The total amount of postoperative analgesic requirement in 24 hours time period and the VAS scores at 2,4,6,8, 12 and 24 hours are also compared among the two groups.