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ISE 5760

Medevac background and scenarios

You are designing a visualization that will assist operators in scheduling patients for aeromedical evacuation.  Although your original design sketches were for the Balkans in response to issues in the mid-1990’s, your current focus is the Middle East due to the recent unrest, and you have to schedule evacuations both intratheater and intertheater (the latter for specialized or critical injuries that require transport to bases in Europe or back to the Unites States). Your unit regularly schedules 500-1000 patients to be evacuated daily. At any point in time, you will have urgent and non-urgent patients in the following categories:

Unscheduled and Unplanned are distinct because an unscheduled patient may have been in the system for many days, whereas an unplanned has yet to be acknowledged and is a brand-new patient that day.

You have the ability to transport up to 115 patients at one time, with the following transport vehicles:

· Helicopters (35 total patients): 7 vehicles, 5 patients per vehicles, short range

· Airplanes

o C-17 (40 total patients): 2 vehicles, 20 patients per vehicle, long range, can be used for evacuation and other purposes at the same time

o C-21 (40 total patients): 20 vehicles, 2 patients per vehicle, short or long range

On this day you are starting at a deficiency and are additionally borrowing Helicopters X and Y, and C21 Z.

You have the following personnel and equipment resources:

· General medical (30 teams of 3 people)

· Burns specialty (5 teams of 3 people)

· Neuro specialty (5 teams of 3 people)

As this day begins (0600), you have 1400 patients scheduled for the day. Here is the schedule.  The key is Scheduled=S, Unscheduled=US, Unplanned=UP, Disrupted=D. For scheduled patients, the time is when they are scheduled. For all other patients, the time is when they will be ready to be picked up.

Helicopters can evacuate patients from the front lines to one of three different close medically equipped bases and be back for another run in 45 minutes.  C-21 can make the short runs and be back in 60 minutes, and can make two trips to a European base a day.  C-17 can make short trips in 60 minutes, two trips to Europe a day, and 1 trip to the US a day.

Scenario 1: 0700 Hospital attacked

Attacks near one of the local hospitals has disabled half of its capability and will take no additional patients. The hospital keeps all of the urgent patients but needs 20 non-urgents to move to another local hospital. This also requires that roughly one-quarter of all urgent and non-urgents for the day need to be rescheduled.

Your visualization needs to show:

1. The scene before any actions are taken.

2. There is not enough time to run the automatic rescheduler for patients needing transport within the next hour, and that urgents need to be manually rescheduled now.

3. That there is only one vehicle big enough to transport all of the non-urgents from the disabled hospital: the C-17.

4. That the automatic rescheduler can be run for the non-urgents, and that after it’s run, some non-urgents were bumped back more than an hour (but were scheduled).

Scenario 2: 0800 C-17 needed for troop transports

A massive non-medical evacuation was ordered, and both of your unit’s C-17’s has been commandeered for the mission.  One was the plane meant to take the 4 1100 patients to Europe, then the 2 1400 patients to the US. Both of your C17’s are now unavailable for use.

Your visualization needs to show:

1. The scene before any actions are taken.

2. There is enough time to run the automatic scheduler

3. That the scheduler could not reschedule the disrupted patients

4. That both your C17’s are no longer available for use

5. That you need more resources.

Scenario 3:  1100 – New casualties

New data comes in that a skirmish in Afghanistan and one in Iraq have resulted in greater than normal casualties.  Battle 1 results in 2 patients urgently wounded and 10 patients non-urgently wounded, but the non-urgents need specialized wound care due to a number of burns on their bodies, and will need to be transported to Europe.  They will all be ready for transport at 1300. Battle 2 resulted in 3 patients urgently wounded. Battle 2 results in 15 non-urgent patients that are ready to be picked up at 1400.

Your visualization needs to show:

1. The scene before actions are taken.

2. That there is enough time to run the automatic scheduling algorithm

3. After running it, all of the patient get scheduled except that it bumps 11 non-urgents that are ready at 1300 and need to be rescheduled and 5 of the Battle 2 patients that still need to be scheduled.

Scenario 4: 1300 – New urgent burn victims

An average of six non-urgents were added for every 15-minute window from 1200 - 1400, and a spike of 20 non-urgents will be ready at 1430. New data comes in that 13 urgent patients needing neuro support in transit will be ready at 1445. They can be transported locally.

Your visualization needs to show:

1. The scene before actions are taken.

2. That there is not enough time to run the automatic scheduler.

3. That there are not enough neuro teams to take all of the patients at once.

4. The scene after all of the neuro patients are scheduled, including the patients that were bumped and need to be rescheduled.