B439 Comparison of dexmedetomidine and propofol for procedural analgosedation in children undergoing ultrasound-guided regional anesthesia for orthopedic surgery. A pilot study - Stevic, M; Ristic, N; Bosinci, E; Petrov Bojicic, I; Jovanovski-Srceva, M; Budic, I; Marjanovic, V; Simic, D; Ducic, S (BMJ Publishing Group Ltd, 2022)