• Mohamed G Elhouty, Khaled Elbahrawy, and Mostafa S Elawady.
• Faculty of Medicine, Mansoura University, Mansoura, Egypt. Dr_mohamedgad2000@mans.edu.eg.
• BMC Anesthesiol. 2023 Jul 19; 23 (1): 241241.

BackgroundAlthough thoracoscopic sympathectomy is made via small incisions, it is associated with severe postoperative pain. Both Rhomboid intercostal block (RIB) and serratus anterior plane block (SABP) are recent techniques used for pain control after such procedures. Herein, we compared RIB and SAPB regarding pain control in patients undergoing thoracoscopic sympathectomy for palmar hyperhidrosis.Patients And MethodsThree groups were enrolled in this prospective randomized study (71 patients in each group); Group S received SAPB, Group R received RIB and Group C as controls. The block procedures were performed after general anesthesia and prior to the skin incision.ResultsThe three groups showed comparable demographics and operative time (P ˃ 0.05). Pain scores showed a significant decline with the two block procedures compared to controls during the first day following surgery (both P ˂ 0.05), but Group R had better scores compared to Group S. Both block techniques were associated with a significant prolongation of the time to first rescue analgesic and less fentanyl consumption compared to controls (both P ˂ 0.05). However, both parameters were improved with RIB rather than SAPB (both P ˂ 0.05). Both blocks led to a significant improvement in patient satisfaction than in the control group (both P ˂ 0.05), but it was comparable between the two approaches (P ˃ 0.05).ConclusionBoth RIB and SAPB are safe and effective in pain reduction after thoracoscopic sympathectomy procedures in patients with hyperhidrosis. Moreover, RIB is superior to SAPB as it is associated with better analgesic outcomes.Trial RegistrationPan African Trial Registry PACTR202203766891354. https://pactr.samrc.ac.za/Researcher/TrialRegister.aspx?TrialID=21522.© 2023. The Author(s).

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