Background: There is little evidence that technology acceptance is well understood in healthcare. The hospital environment is complex and dynamic creating a challenge when new technology is introduced because it impacts current processes and workflows which can significantly affect patient care delivery and outcomes. This study tested the effect of the Emergency Telemedicine Technology Acceptance Model (ETTAM) to predict technology acceptance scores. Managing surge capacity, a sudden increase of severely injured patients during a disaster, is a critical global issue. Mobile telemedicine was introduced into emergency departments in multiple hospital systems for activation during a simulated mass casualty incident (MCI) to leverage clinical expertise and to manage surge capacity. The success of this program was dependent on the user's acceptance of the technology. The Simulation Telemedicine Acceptance Tool (STAT) was adapted to measure technology acceptance scores. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]