For this trial, the investigators, surgical team, and patients will be blinded to the administration of the agent, which is given as an IV Push of 30mg. For patients who are older than 65 years or weight less than 50kg, the dose will be adjusted to 15mg to minimize the risk of bleeding. The anesthesiologist will not be blinded as he/she will deliver the agent and because the use of ketorolac may alter their usage of other intra-operative agents and post-operative agents. The surgical team will be un-blinded post-operatively.