Randomized Controlled Trial
Postoperative analgesia after peripheral nerve block for podiatric surgery: clinical efficacy and chemical stability of lidocaine alone versus lidocaine plus ketorolac.
Reg Anesth Pain Med. 2000 Sep 1;25(5):506-13.
Randomized Controlled Trial
Buprenorphine added to the local anesthetic for axillary brachial plexus block prolongs postoperative analgesia.
Reg Anesth Pain Med. 2002 Mar 1; 27 (2): 162-7.
Randomized Controlled Trial
Buprenorphine with bupivacaine for intraoral nerve blocks to provide postoperative analgesia in outpatients after minor oral surgery.
J. Oral Maxillofac. Surg. 2009 Dec 1;67(12):2571-6.