The editors of Academic Emergency Medicine are pleased and privileged to present the Original Research Abstracts from the Annual Meeting of the Society for Academic Emergency Medicine, May 16–19, 2007, in Chicago. The exciting trends of emergency medicine research are reflected in these brief summaries as are the talent, creativity, and enthusiasm of novice as well as more experienced academicians.

This year, 1,172 research abstracts were submitted and 545 were selected for presentation at the Meeting (not including the 78 Innovations in Emergency Medicine Education Exhibits, which were submitted sepa-rately). Each abstract was independently reviewed by up to six designated topics experts who were blinded to the authors. Final determination for scientific presentation was made by the Scientific Subcommittee, chaired by O. John Ma, MD, and the SAEM Program Committee, chaired by Debra Houry, MD, MPH. The decision for presentation was based on the final review score and the space available for presentation at the meeting.

We present these abstracts as they were received electronically from the authors, who are solely responsible for their content. They appear as they were received; we have done only minimal proofreading of these abstracts. Any questions you may have on their content should be directed to their authors. Presentation numbers precede the abstract titles. An index of key words and authors begins on page S220. Abstracts marked as late breakers (numbers 462 and 527) are prospective research projects, such as a clinical trial still in the midst of data collection or patient enrollment at the January 8 abstract deadline, but that will be completed, including analysis, by April 15, 2007.

On behalf of the membership of SAEM, the editorial board of AEM, and the leadership of our specialty, we express our sincere gratitude to these academicians and the SAEM Program Committee for their continuing efforts to improve our patients' care by advancing emergency medicine research and education.