Hernández G, Ospina-Tascón GA, Petri Damiani L et al. JAMA. 2019;321(7):654-664. doi:10.1001/jama.2019.0071
Predicting Successful Supraclavicular Brachial Plexus Block Using Pulse Oximeter Perfusion Index.
Abdelnasser A, Abdelhamid B, Elsonbaty A et al. British Journal of Anaesthesia 2017; 119 (2): 276-80 https://doi.org/10.1093/bja/aex166