Randomized Controlled Trial

The analgesic effect of lornoxicam when added to lidocaine for intravenous regional anaesthesia.

Br J Anaesth. 2006 Sep 1;97(3):408-13.
Randomized Controlled Trial

The early and delayed analgesic effects of ketamine after total hip arthroplasty: a prospective, randomized, controlled, double-blind study.

Anesth. Analg. 2009 Dec 1;109(6):1963-71.
Randomized Controlled Trial

The analgesic effect of nitroglycerin added to lidocaine on intravenous regional anesthesia.

Anesth. Analg. 2006 Mar 1;102(3):916-20.