Randomized Controlled Trial
Efficacy of Ketamine as an Adjunct to Lidocaine in Intravenous Regional Anesthesia.
Reg Anesth Pain Med. 2014 Sep 1; 39 (5): 418-22.
Review
Stroke, regional anesthesia in the sitting position, and hypotension: a review of 4169 ambulatory surgery patients.
Reg Anesth Pain Med. 2011 Sep 1;36(5):430-5.