Improving the Air Force Medical Service's Expeditionary Medical Support System: A Simulation Approach
Analysis of Mass-Casualty Combat and Disaster Relief Scenarios
Research finds minor changes to the Air Force's Expeditionary Medical Support System (EMEDS) that produce significant impacts on patient outcomes in mass-casualty events.
The Air Force presently deploys a modular medical treatment facility (MTF), the EMEDS, to provide emergency care to patients around the globe. A fully developed EMEDS consists of twenty-five medical and surgical beds. The EMEDS is not designed to treat large numbers of critically wounded patients or individuals needing advanced trauma surgery. However, the Air Force has previously employed an EMEDS to assist with the emergency medical care provided in large-scale operations.
This research uses a simulation tool to answer three questions. First, how well does the EMEDS currently perform across three types of mass-casualty events: fixed-based missile strikes, earthquakes, and hurricanes? What changes can be made within an EMEDS that might allow it to better serve large numbers of patients? Finally, across the indicated changes, what are the specific impacts on overall patient outcomes (evacuations, returns-to-duty, and mortality) for different patient streams?
This research confirms that the EMEDS is not well-suited to handle patient surges. Though large-scale changes to the EMEDS structure are impractical, two small changes were found that each produce beneficial and statistically significant impacts on patient outcomes. Increasing the size of one of the EMEDS's functional areas, the Critical Care Ward, by adding two beds alleviates patient bottlenecks and improves patient throughput by 50% in some scenarios. Prioritizing certain low mortality risk patients increases evacuations by an average of 200% while increasing return-to-duty rates significantly. When combined, these two adjustments further improve the productivity of the MTF.
This research recommends that the Air Force conduct operational tests of modified EMEDS to confirm that the proposed changes have the beneficial impacts measured and thus strengthen the ability of EMEDS to respond to mass-casualty events.
Table of Contents
EMEDS Background and Existing Medical Tools and Research
Assessing Alternative EMEDS Configurations
EMEDS Improvements for Fixed Base Attacks
EMEDS Improvements for HA/DR Events
Research Limitations and Additional Considerations
Conclusions and Recommendations