Pirotesak, S., Dhaifallah, D.G., Alem, M., Alkhoutani, A., Amir, A., Rodelo, K., Asenjo, J.F., Finlayson, R.J., Aliste, J. and Tran, D.Q. 2026. A Randomized Comparison among 0.67 μg/kg, 1 μg/ kg and 1.33 μg/kg of Perineural Dexmedetomidine for Ultrasound-guided Infraclavicular Block: . Siriraj Medical Journal. 78, 10 (Oct. 2026), 759–770. DOI:https://doi.org/10.33192/smj.v78i10.283472.