Laparoscopic cholecystectomy leads to somatic pain from the supraumbilical abdominal area and also visceral pain due to pneumoperitoneum and surgical manipulation.Pain managment in these patients is very important for enhanced recovery after surgery.Ultrasoundguidance and anatomic studies have led to the description of many new interfascial plane blocks.One of the most commonly used blocks is oblique transverse abdominisplane block[OSTAP] to relief post operative pain relief in laparoscopic abdominal surgeries.The thoracoabdominalnerves block through perichondrial approach[M-TAPA] is one of the newer blocks that is used nowadays for postoperative analgesia in laparoscopic abdominal surgeries. Early studies seem to indicate that M-TAPA  hasadvantage over OSTAP.

We will be conducting a double blinded, randomized control trial to compare the analgesic efficacy of ultrasound guided modified thoracoabdominal nerve block through perichondrial approach versus oblique subcostaltransversus abdominis plane block for laparoscopic cholecystectomy. 

Total of 60 patients will be randomly allocated into two equal groups of 30 patients each.The M-TAPA or OSTAP Blocks will be administered  following general anesthesia with endotracheal  intubation by the standard institutional  protocol. 

We will note the  24 hour  post-operative analgesic consumption [Tramadol ] ; the time of first rescue analgesic administration, and the NRS pain scale at 30 min ; 1 hour ; 2 hour ; 4 hour ; 8 hour and 24 hour will be noted .QoR-15 questionnaire scores both before and after the operation will recorded.Comparison of thoracoabdominal areas(T3-L1) with sensory block 2hours following surgery will be noted.