Randomized Controlled Trial
Lateral versus medial needle approach for ultrasound-guided supraclavicular block: a randomized controlled trial.
Reg Anesth Pain Med. 2011 Jul 1;36(4):387-92.
Randomized Controlled Trial
A Randomized Comparison Between Interscalene and Small-Volume Supraclavicular Blocks for Arthroscopic Shoulder Surgery.
Reg Anesth Pain Med. 2018 Aug 1; 43 (6): 590-595.
Observational Study
Predicting successful supraclavicular brachial plexus block using pulse oximeter perfusion index.
Br J Anaesth. 2017 Aug 1; 119 (2): 276-280.