A Study Evaluating the Overall Pain Relief and Safety of Intravenous (IV) CR845 in Patients Undergoing Abdominal Surgery

"CR845 IV 1 mcg/kg will be administered as an IV bolus 2x loading dose one hour prior to anesthetic induction for surgery, then a dose within 30 minutes of the patient being considered stable in the post operative recovery room. Subsequent dosing will be administered at 6, 12 and 18 hours.~Antinausea rescue medication (ondansetron 4 mg IV) may be requested, as well as analgesic rescue medication (morphine 5mg IV), post surgery, as needed. Saline infusion (IV 0.45%) for fluid replenishment will be provided."

"CR845 IV 0.5 mcg/kg will be administered as an IV bolus 2x loading dose one hour prior to anesthetic induction for surgery, then a dose within 30 minutes of the patient being considered stable in the post operative recovery room. Subsequent dosing will be administered at 6, 12 and 18 hours.~Antinausea rescue medication (ondansetron 4 mg IV) may be requested, as well as analgesic rescue medication (morphine 5mg IV), post surgery, as needed.~Saline infusion (IV 0.45%) for fluid replenishment will be provided."

"Placebo IV will be administered as an IV bolus 2x loading dose one hour prior to anesthetic induction for surgery, then a dose within 30 minutes of the patient being considered stable in the post operative recovery room. Subsequent dosing will be administered at 6, 12 and 18 hours.~Antinausea rescue medication (ondansetron 4 mg IV) may be requested, as well as analgesic rescue medication (morphine 5mg IV), post surgery, as needed.~Saline infusion (IV 0.45%) for fluid replenishment will be provided."