Comparative analysis of the effects of propofol and sevoflurane anesthesia on intraoperative metabolic, electrolyte, and acid–base homeostasis in children undergoing craniotomy for brain tumors E.A. Satvaldieva , A.A. Abdukadirov , B.F. Khodzhiev , K.I. Khaydarov , A.S. Abipnazarova 23-31 2026-03-30