CAMBRIDGE, Mass.--(BUSINESS WIRE)--Javelin Pharmaceuticals, Inc. (AMEX: JAV) announced dosing of the first patient in its pivotal Phase 3 clinical study of PMI-150 (intranasal ketamine) for acute pain. The trial is expected to enroll approximately 200 patients and is designed to confirm the analgesic efficacy of PMI-150 in treating postoperative pain following orthopedic surgery. Prior randomized, double-blind, placebo-controlled, phase II clinical studies of PMI-150 have demonstrated rapid, statistically significant relief of moderate-to-severe postoperative and breakthrough pain.