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The Use of FAST Scan by Paramedics in Mass-casualty Incidents: A Simulation Study
- Brian West, J. Andrew Cusser, Stuart Etengoff, Hank Landsgaard, Virginia LaBond
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- Journal:
- Prehospital and Disaster Medicine / Volume 29 / Issue 6 / December 2014
- Published online by Cambridge University Press:
- 13 November 2014, pp. 576-579
- Print publication:
- December 2014
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Introduction
The Focused Abdominal Sonography in Trauma (FAST) scan is used to detect free fluid in the peritoneal cavity, or pericardium, to quickly assess for injuries needing immediate surgical intervention. Mass-casualty incidents (MCIs) are settings where paramedics must make triage decisions in minutes. The Simple Triage and Rapid Transport (START) system is used to prioritize transport. The FAST scan can be added to the triage of critical patients, and may aid in triage.
MethodsThis was a single-blinded, randomized control trial. Ten paramedics with field experience were trained with an ultrasound machine in the performance of the FAST scan. Two weeks were allowed to pass before testing to simulate the time between training of standard procedures and their implementation. On test day, five peritoneal dialysis patients with instilled dialysis fluid and five matched control patients were placed in a room in a random order where the paramedics performed FAST scans on each patient. The paramedics were assessed by declaring positive or negative for each evaluation, as well as being timed for the total exercise.
ResultsOf the ninety tests (one paramedic dropped out due to family emergency), the paramedics had a mean accuracy of 60% and median of 62% (range 40%-80%). There was a statistically significant higher false-positive rate of 59% than false-negative rate of 41% (P < .01). Sensitivity was 67% with a specificity of 56%. Average time taken was 1,218 seconds (121.8 seconds per patient) with a range of 735-1,701 seconds and a median of 1,108 seconds.
ConclusionIn this simulation study, paramedics had difficulty performing FAST scans with a high degree of accuracy. However, they were more apt to call a patient positive, limiting the likelihood for false-negative triage.
. ,West B ,Cusser JA ,Etengoff S ,Landsgaard H .LaBond V The Use of FAST Scan by Paramedics in Mass-casualty Incidents: A Simulation Study . Prehosp Disaster Med.2014 ;29 (6 ):1 -4
Casualty Collection in Mass-Casualty Incidents: A Better Method for Finding Proverbial Needles in a Haystack
- Kristina E. Knotts, Stuart Etengoff, Kimberly Barber, Ina J. Golden
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- Journal:
- Prehospital and Disaster Medicine / Volume 21 / Issue 6 / December 2006
- Published online by Cambridge University Press:
- 28 June 2012, pp. 459-464
- Print publication:
- December 2006
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Introduction:
Mass-casualty incidents (MCIs) are on the rise. The ability to locate, identify, and triage patients quickly and efficiently results in better patient outcomes. Poor lighting due to time of day, inclement weather, and power outages can make locating patients difficult. Efficient methods of locating patients allow for quicker transport to definitive care.
Objective:The objective of this study was to evaluate the methods currently used in mass-casualty collection, and to determine whether the use of the Simple Triage and Rapid Treatment (START) triage tag system can be improved by using easily discernable tags (glow sticks) in conjunction with the standard triage tags.
Methods:Numerous drills were performed utilizing the START triage method. In Trial A, patients were identified with the triage tags only. In Trial B, patients were identified using triage tags and glow sticks. Four rounds of triage drills were performed in low ambient light for each Trial, and the differences in casualty collection times were compared.
Results:Casualty relocation and collection times were considerably shorter in the trials that utilized both the glow sticks and triage tags. An average of 2.58 minutes (31.75%) were saved during the casualty collections. In addition, fewer patient errors occurred during the trials in which the glow sticks were used. Between the four rounds, an average of four patient errors occurred during the trials that utilized the triage tags. However, there was an average of only one patient error for the drills when participants utilized both the triage tags and the glow sticks.
Conclusions:The use of the highly visible glow sticks, in conjunction with the START triage tags, allowed for more rapid and accurate casualty collection in suboptimal lighting. The use of the glow sticks made it easier to relocate previously triaged patients and arrange for expeditious transport to definitive care. In addition, the glow sticks reduced the number of patient errors. Most importantly, there was a significant reduction in the number of patients that initially were triaged via the START method, but were overlooked during casualty collection and transport.
Vertical Evacuation Simulation of Critically Ill Patients in a Hospital
- Jon R. Gildea, Stuart Etengoff
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- Journal:
- Prehospital and Disaster Medicine / Volume 20 / Issue 4 / August 2005
- Published online by Cambridge University Press:
- 28 June 2012, pp. 243-248
- Print publication:
- August 2005
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Introduction:
The world's new social environment dictates the need for preparedness should a disaster occur. One caveat in the realm of disaster preparedness is the vertical evacuation of hospital patients. Little data regarding the evacuation of patients are available, and the consequences of not being prepared could be devastating. Therefore, if the vertical evacuation of critically ill patients was thrust upon a community hospital, the response of emergency services and ancillary staff is largely unknown.
Methods:The vertical evacuation of 12 simulated critically ill patients from the fourth floor of a newly constructed and vacant critical care unit was undertaken by local fire fighters, on-staff nursing, residents, and ancillary staff, all under the direction of the hospital Emergency Management Committee. Four randomly selected groups of firefighters, two teams consisting of three personnel and two teams of four personnel, were timed and had vital signs assessed prior to ascending to the fourth floor to retrieve a patient and upon each subsequent decent. Each team, dressed in full turnout gear, retrieved three patients. Each simulated patient was fashioned with mock endotracheal tube, intravenous lines, monitor, and a Pleurovac® was attached in three of the four patients. Vital signs were analyzed for significant changes or patterns due to exertion and or stress during the drill. Evaluations were distributed to all participants upon completion of the drill.
Results:Mean values for the vital signs of the members of each team showed minimal increases from baseline to completion with the exception of heart rate. A decrease in systolic blood pressure was present in both of the four member teams. Subjective evaluation by the firefighters, indicated a “minimal” increase in exertion. Mean extraction time was 14.7 minutes. Patient transfer and evacuation was completed without complication to the patients or staff. Only one firefighter requested a replacement. Completed evaluations indicated above average or outstanding performance on organization, commitment, security, and care. Comments included statements regarding equipment management during transport, better communication, stairwell width, difficulty with ventilating intubated patients, improvement of evacuation time, and organization as drill progressed; three member teams, spatially, worked better than four.
Conclusion:This drill reflected an impressive level of preparedness by firefighters, nurses, and ancillary staff both physically and organizationally. Should a vertical evacuation of critically ill patients be necessary, a four firefighter extraction team and accompanying nurse and respiratory therapist would be able to evacuate one patient at a rate of 3.75 minutes per floor.