[\'OnSite-LLC, Indianapolis, IN.\', \'Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA. Electronic address: franklin-dexter@uiowa.edu.\', \'SLD Technology, Inc., Portland, OR.\']
Operating room air delivery design to protect patient and surgical site results in particles released at surgical table having greater concentration along walls of the room than at the instrument tray.