Informed consent will be obtained from patients presenting with chief complaint of moderate to severe abdominal pain in the emergency department who do not meet any exclusion criteria and who willingly agree to participate by signing the written consent form. Investigators will assess the patient's opioid tolerance by asking if they have use an opioid medication in the last week, prescription opioid use at home, and/or recreational opioid use. Patients in both groups will fill out the pre-treatment questionnaire, which will include demographic questions (age, sex, race, height, weight, etc.), a 10cm (100mm) VAS for pain, a 10cm (100mm) VAS to measure patient satisfaction, and a Likert Scale to measure patient satisfaction. Post-treatment survey will be given at 30 minutes after administration of medication. The physician will record whether the patient required additional pain medication after the 30 minutes, final emergency department diagnosis, and final emergency department disposition.
The proposed research will be a single blinded (patient) randomized controlled prospective trial of adult patients receiving treatment for moderate to severe abdominal pain to test the hypothesis that patient satisfaction with pain control with Ketamine will be comparable to patient satisfaction with pain control using morphine when treating abdominal pain.