Nitrous Oxide for Acute Migraine Pain in the Emergency Room (ED)

Once consent is obtained, the research assistant will notify the charge RN and MD of the patient's study participation. The patient will then be placed in a treatment room and nitrous oxide will be administered per the existing protocol. Each participant will be given nitrous oxide until he/she reports a pain score of zero or up to fifteen minutes. Study subjects will be asked to rate their pain on a scale of 0-10 before the treatment and after the treatment, the time duration of administering nitrous oxide will be recorded. In addition, the pain scores at 30, 60, 90, and 120 minutes post baseline measurement will be collected in order to evaluate the sustained effect of nitrous oxide in treating acute migraine pain. Someone from the study will also make a follow-up phone call 24 - 48 hours to see if pain relief persisted.