• Basak Altiparmak, Toker Melike Korkmaz MK Muğla Sıtkı Koçman University Training and Research Hospital, Department of Anesthesiology and Reanimation, Muğla, Turquia., Ali İhsan Uysal, Yağmur Kuşçu, and Demirbilek Semra Gümüş SG Muğla Sıtkı Koçman University Training and Research Hospital, Department of Anesthesiology and Reanimation, Muğla, Turquia..
• Muğla Sıtkı Koçman University, Muğla Sıtkı Koçman Üniversitesi Egitim Arastırma Hastanesi, Department of Anesthesiology and Reanimation, Muğla, Turquia. Electronic address: basakugurlu@me.com.
• Rev Bras Anestesiol. 2019 Nov 1; 69 (6): 561-568.

Background And ObjectivesThe primary aim of this study is to assess the effect of ultrasoung-guided erector spinae block on postoperative opioid consumption after laparoscopic cholecystectomy. The secondary aims are to assess the effects of erector spinae plane block on intraoperative fentanyl need and postoperative pain scores.MethodsPatients between 18-70 years old, ASA I-II were included in the study and randomly allocated into two groups. In Group ESP, patients received bilateral US-ESP with 40ml of 0.25% bupivacaine at the level of T7, while in Group Control, they received bilateral US-ESP with 40ml of saline before the induction of anesthesia. Then a standard general anesthesia procedure was conducted in both groups. NRS scores at the postoperative 15th, 30th, 60th minutes, 12th and 24th hours, intraoperative fentanyl need and total postoperative tramadol consumption were recorded.ResultsThere were 21 patients in Group ESP and 20 patients in Group Control. Mean postoperative tramadol consumption was 100±19.2mg in Group ESP, while it was 143±18.6mg in Group Control (p<0.001). The mean intraoperative fentanyl need was significantly lower in Group ESP (p=0.022). NRS scores at the postoperative 15th, 30th min, 12th hour and 24th hour were significantly lower in ESP group (p<0.05). According to repeated measures analysis, NRS score variation over time was significantly varied between two groups (F[1,39]=24.061, p< 0.0005).ConclusionsBilateral US-ESP block provided significant reduction in postoperative opioid consumption, intraoperative fentanyl need and postoperative pain scores of patients undergoing laparoscopic cholecystectomy.Copyright © 2019 Sociedade Brasileira de Anestesiologia. Publicado por Elsevier Editora Ltda. All rights reserved.

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