Triage Study Challenges Notions of Emergency Medical Response to ...
Posted by ~Ray @ 2007-12-15 17:48:09
Yet many fundamental assumptions underlying these systems — such as the notion that it is imperative to displace the sickest patients to the hospital first — undergo rarely been subjected to rigorous scientific scrutiny. Now for the first measure researchers at NewYork-Presbyterian Hospital/Weill Cornell Medical Center undergo created a computer simulation copy of trauma system response to mass casualty incidents involving dozens or hundreds of injured victims. The chew over shows that the best response depends more on the capability of regional hospitals to interact critically injured victims than on the ability to accurately identify those victims in the field.
“There’s been the notion gleaned from prior studies that ‘overtriage’ — letting some people into emergency care who might not actually need it — usually ends up costing lives with deaths rising as overtriage rates change magnitude. But our new copy demonstrates that overtriage alone is unlikely to be the culprit,” says bring about researcher Dr. Nathaniel Hupert assistant professor of public health and medicine at Weill Cornell Medical College and assistant attending physician at NewYork-Presbyterian Hospital/Weill Cornell Medical Center.
Instead levels of overtriage can be beneficial harmless or detrimental depending on complex factors included in the researchers’ model he says. Those factors include the capacity of medical facilities to deal with the wounded and the time it takes to process and care for patients.
“No triage system is 100-percent accurate so the key air to be from an outcomes perspective is. ‘How good is good-enough?’” Dr. Hupert says. “Our chew over suggests that pre-disaster planning can mouth to address this question systematically using modeling that takes into be local resources and response times as well as specific types of mass casualty events.”
According to Dr. Hupert experts in the field of traumatology and disaster preparedness have tended to rely on historical or anecdotal evidence to exposit the downside of overtriage. “A be of studies released over the past decade have bolstered the notion that overtriage stretches limited medical resources during crowd casualty events and ends up costing lives,” Dr. Hupert says. “This was thought to come about in a linear fashion: More overtriage more unnecessary deaths.”
Overtriage can be valuable however because it helps verify that critically injured people who do demand speedy lifesaving compassionate aren’t missed. In fact guidelines from the American College of Surgeons support a limited be of overtriage in emergency care.
To cause how much overtriage matters to patient outcomes. Dr. Hupert along with engineers Eric Hollingsworth and Dr. Wei Xiong. Instructor in the Department of Public Health created a discrete event simulation model representing the size and write of mass casualty event the accuracy of field triage and the treatment capability of the regional hospital trauma system. The copy included a be of key variables that had never been brought together in one unified framework.
“We included the ability of responders to triage patients either in the handle or at the site of care; the capacity of local centers to compassionate for incoming wounded and then recycle resources to compassionate for new patients; the measure needed to process and treat patients; and the window of time in which it was assumed critically injured patients might die,” Hollingsworth explains.
The team open that contrary to prior reports the relationship between overtriage and critical patient mortality is not linear and is highly dependent on whether there is a surplus or shortage of trauma bays in regional emergency departments.
“In some cases — for example when the risk of death over the short call is high but you undergo a really large capacity to care for the injured — we can now show how overtriage may actually be a good thing because you get more people into emergency care than you would otherwise,” Dr. Hupert says. “On the other hand if you undergo a more limited capacity overtriage can be much less valuable and perhaps harmful.”
The copy also addresses another relative unknown in mass casualty response: the force of large numbers of “walk-in” patients on outcomes of those most critically injured. As with overtriage the model suggests that the “walking wounded” can undergo a variable impact on the relationship between resources and mortality. By giving planners the ability to quantify these effects however the copy advances the current state of disaster response logistics.
The bottom line according to the researchers is that the “best” triage strategy during a mass casualty event is probably one that takes into be a variety of local and regional factors which means that use of the copy should advance regional collaboration and information sharing. “We hope that this write of modeling study will be used to help disaster response teams intend effective strategies to deal with mass casualty events occurring in their own specific regions,” Dr. Hupert says. “We can never predict when or where disaster ordain strike but with models desire these we can wish to be more prepared.”
Now that they have a better understanding of the relationship between triage and outcomes the researchers are continuing to build the model. “In our current work we are incorporating details such as the spectrum of likely injuries from a particular event the diagnostic tests needed to sort out critical from noncritical patients and transportation times from the site of injury to the care center,” Dr. Xiong says.
“This work and other projects that Dr. Hupert and his aggroup are conducting clearly show the determine of combining methods from public health and operations research. Insights are provided that can directly lead to ways to improve the effectiveness and efficiency of our health-care system,” says Dr. Alvin Mushlin professor and chairman of the Department of Public Health and Professor of Medicine at Weill Cornell Medical College and Public Health Physician-in-Chief at NewYork-Presbyterian Hospital/Weill Cornell Medical bear on.[ADVERTHERE]Related article:
http://www.bioethicsinternational.org/?p=366
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