Dynamic System Status Management

System Status Management (SSM) is the fluid deployment of ambulances based on the hour-of-the-day and day-of-the-week in order to match supply, defined as Unit Hours of Utilization (UHU), with expected demand, expressed as calls for service, in the attempt to provide faster response by locating ambulances at “posts” nearer their next calls. While the practice is still notunanimously embraced by all services, it has a sound foundation both in theresearch literature dating back to the 1980′s as well as in practice today. Experience has shown that ambulance response times can be dramatically decreased using this type of dynamic deployment, but it is also recognized that it is possible to reduce performance when these techniques are not applied properly. The direction of the results of a system implementation are typically influenced by the system design, competence of the managers creating the plan, and commitment of the workforce in implementing it. Therefore the best practice is a simple and straightforward implementation that will show positive results quickly. This methodology ensures a positive return on investment along with garnering the necessary buy-in from staff to make the project a success.

In his article, “System Status Management – The Fact is, It’s Everywhere“, published in the Journal of EMS (JEMS) magazine back in 1989, Jack Stout explained the concept of SSM and tried todispelcertain myths. Based on foreseen Geographic Information System (GIS) technology and even general computing capabilities of that time, it was quite logical to assume in his Myth #2 that “no matter how thoroughly the response zone concept is fine-tuned in practice, it cannot be made to cope effectively with the dynamic realties of the EMS environment.” But systems implemented today around the US are capable of calculating dynamic response zones in a small fraction of a second while even being based on time-aware historic driving patterns making a truly dynamic system status management process a reality. A practical and proven example of a dynamically functioning system status management application is the Mobile Area Vehicle Routing and Location Information System, or simply MARVLIS.

The following Slideshare presentation does an excellent job of telling the story of why and how the system works:

High Performance EMS is MARVLIS[slideshare id=8765718&w=425&h=355&sc=no]

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High Performance Emergency Medical Services (HP-EMS) systems provide effective clinical care promoting positive patient outcomes and community wellness while maintaining a focus on improving economic efficiency of the system.  This site is dedicated as a community seeking to increase agency performance by promoting useful information regarding the developing trends and improvements in the efficiency of delivering basic and advanced medical care in the field.

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Comments
JMatt
Did You Watch ‘Nightwatch’ Last Night?
This is so over dramatic.They Give EMS workers super powers and give them a Medical degree.They are not even nurses. They perform a hard job with some skill but cardiac message and opening up chests and make shift surgery ,inflating the lungs!! Come on!!! The comments by the EMS workers are very AWKWARD. " WE…
2015-01-27 02:23:13
Rob Lawrence
Did You Watch ‘Nightwatch’ Last Night?
i hope someone got patient consents. Did the GSW victim sign the forms? Hate to wake and anger the HIPPO monster!
2015-01-24 22:19:38
Sean Cerny
Did You Watch ‘Nightwatch’ Last Night?
We run lights and sirens mandatory to most calls. There's a lot of non emergent calls as well and ALOT of etoh calls. Also on every shift almost there is a GSW somewhere if not multiple. It's a high volume service. The tv aspect Is certainly there but I think they did a good job.
2015-01-24 13:02:54
Steven
Did You Watch ‘Nightwatch’ Last Night?
As a brother to one of the medics in the show, and also a fellow paramedic in new orleans, I can't stress enough that the fact that they only displayed one ETOH call is perfect to me. As you said, "this is the big easy" we run a cast majority of drunk calls, so many…
2015-01-23 15:54:29
keeley
Did You Watch ‘Nightwatch’ Last Night?
My last 12hr shift i worked 2 codes and a gsw so it happens at NOEMS more often then people realize and again every city is different unfortunately we see GSWs almost on a daily basis. ..enjoy the season NIGHTWATCH 🚑🚑🚑
2015-01-23 15:07:39

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