• Ela Erten, Umut Kara, Fatih Şimşek, Muharrem Öztaş, Mehmet Anıl Süzer, Hasan Kamburoğlu, Mehmet Burak Eşkin, Serkan Şenkal, and Ahmet Çoşar.
• University of Health Sciences, Gulhane Training and Research Hospital, Department of Anesthesiology and Reanimation - Ankara, Turkey.
• Rev Assoc Med Bras (1992). 2024 Jan 1; 70 (3): e20230962e20230962.

ObjectiveA new block, namely, modified thoracoabdominal nerves block through perichondrial approach, is administered below the costal cartilage. We sought to compare the analgesic efficacy of the modified thoracoabdominal nerves block through perichondrial approach block with local anesthetic infiltration at the port sites in an adult population who underwent laparoscopic cholecystectomy.MethodsPatients who will undergo laparoscopic cholecystectomy were randomized to receive bilateral ultrasound-guided modified thoracoabdominal nerves block through perichondrial approach blocks or local anesthetic infiltration at the port insertion sites. The primary outcome was the total amount of tramadol used in the first 12 h postoperatively. The secondary outcomes were total IV tramadol consumption for the first postoperative 24 h and visual analog scale scores.ResultsThe modified thoracoabdominal nerves block through perichondrial approach group had significantly less tramadol use in the first 12 h postoperatively (p<0.001). The modified thoracoabdominal nerves block through perichondrial approach group's visual analog scale scores at rest (static) and with movement (dynamic) were significantly lower compared with the port infiltration group (p<0.05).ConclusionPatients who received modified thoracoabdominal nerves block through perichondrial approach block had significantly less analgesic consumption and better pain scores than those who received port-site injections after laparoscopic cholecystectomy.

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