Supraclavicular Brachial Plexus Block: Comparison of Varying Doses of Nalbuphine Combined with Levobupivacaine: A Prospective, Double-blind, Randomized Trial.

Background And Aims: The ideal dose of nalbuphine for brachial plexus block (BPB) is a matter of debate. This study was carried out to evaluate 5 mg or 10 mg of nalbuphine added to 0.375% levobupivacaine, with regard to the duration of analgesia.