Accuracy of trauma triage in patients transported by helicopter (original) (raw)
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Evaluation of Trauma Triage Criteria Performance in a Regional Trauma System
Prehospital Emergency Care, 2019
We evaluated the performance of individual trauma triage criteria using data from a regional trauma registry. Methods: Los Angeles County (LAC) paramedics use triage criteria adapted from the 2011 Center for Disease Control (CDC) guidelines to triage injured patients to Trauma Centers (TCs). TCs report outcomes to a LAC EMS registry. We abstracted data for patients 15 years or older from 2013 to 2015 and identified all trauma triage criteria that were met for each encounter. Study outcomes were: 1) "clear need" for a TC, defined as receiving a non-orthopedic operative intervention within 6 hours of arrival, injury severity score (ISS) >15, or surgical ICU admission; or 2) "no need" for a TC, defined as discharge home from the emergency department (ED). We also defined "possible need" as those patients not discharged home from the ED, inclusive of "clear need" and all other admitted patients. For each individual triage criteria, we calculated the positive likelihood ratios and positive predictive values for TC need. Results: There were 71536 adult patients in the registry transported by EMS to a LAC TC during the study. Median age was 38 years (IQR 25-55) with 73% male. There were 23628 (33%) who met "no need" criteria for a TC, leaving 47908 (67%) patients with "possible need" for a TC, of whom 13343 patients (19% of total) met "clear need" for a TC. No individual trauma criterion met the a priori likelihood ratio A c c e p t e d M a n u s c r i p t threshold of 10 for predicting "clear need" for a TC. Cardiopulmonary arrest with penetrating torso trauma and flail chest met this threshold for "possible need." Conclusion: In this retrospective analysis, no individual triage criterion definitively identified patients who benefit from transport to a TC. Yet, the majority of patients demonstrated potential benefit for nearly all criteria, supporting CDC recommendations that trauma triage criteria be considered in their entirety, not as individual criterion.
Field triage of trauma patients: Improving on the Prehospital Index
The American Journal of Emergency Medicine, 2002
The purpose of the present study was to evaluate the predictive ability of the Prehospital Index (PHI) in identifying injury severity and to develop a trauma triage scale that incorporates, along with the PHI, a subset of time independent variables to improve the predictive ability of the PHI-based triage instrument. This study included 1,291 trauma patients treated in Montreal, Canada. The developed trauma triage protocol was based on logistic regression analysis, in which the model that predicts the data best was selected by using Bayesian information criterion. The selected regression model included the variables age, body region injured, mechanism of injury, comorbidity, and PHI. This algorithm was a substantial improvement in detecting major versus nonmajor injuries (major injury defined based on death, intensive care unit admission, and surgery intervention) over the PHI alone area under the receiver operating characteristic curve: 0.76 v 0.66, P < .05). Considering time independent variables could lead to better injury triage decisions. (Am J Emerg Med 2002;20:170-176. Copyright 2002, Elsevier Science (USA). All rights reserved.)
Prehospital emergency care : official journal of the National Association of EMS Physicians and the National Association of State EMS Directors, 2018
Prehospital triage of the seriously injured patient is fraught with challenges, and trauma scoring systems in current triage guidelines warrant further investigation. The primary objective of this study was to assess the correlation of the physiologically based Revised Trauma Score (RTS) and MGAP score (mechanism of injury, Glasgow Coma Scale, age, blood pressure) with the anatomically based Injury Severity Score (ISS). The secondary objectives for this study were to compare the accuracy of the MGAP score and the RTS for the prediction of in-hospital mortality for trauma patients. This study was a retrospective cohort including 10 years of patient data in a large single-center trauma registry at a primary adult resource center (Level I) for trauma patients. Participants included adults (age ≥18 years). The primary outcome measure was injury severity (measured by ISS) and a secondary analysis compared the RTS and MGAP for the prediction of patient mortality. Descriptive statistics we...
Archives of Medical Science, 2016
Introduction: The Revised Trauma Score (RTS) accurately identifies trauma patients at high risk of adverse events or death. Less is known about its usefulness in the general population and non-trauma recipients of Helicopter Emergency Medical Service (HEMS). The RTS is a simple tool and omits a lot of other data obtained during clinical evaluation. The aim was to assess the role of the RTS to identify patients at risk of major complications (death, cardiopulmonary resuscitation, defibrillation, intubation) in the general population of HEMS patients. Clinical factors beyond the RTS were analyzed to identify additional prognostic factors for predicting major complications. Material and methods: A retrospective analysis of medical records of adult patients routinely collected during HEMS missions in the years 2011-2014 was performed. Results: The analysis included 19 554 HEMS missions. Patients were 55 ±20 years old and 68% were male. The most common indication for HEMS was diseases of the circulatory system-41%. Major complications occurred in 2072 (10.6%) cases. In the general population of HEMS patients, the RTS accurately identified individuals at risk of major complications at a cutoff value of 10.5 and area under the curve (AUC) of 93.5%. In multivariate analysis, additional clinical data derived from clinical examination (ECG; skin, pupil and breathing examination) significantly but marginally improved the accuracy of RTS assessment: AUC 95.6% (p < 0.001 for the difference). Conclusions: The Revised Trauma Score accurately identifies individuals at risk of major complications during HEMS missions regardless of the indication. Additional clinical data significantly but marginally improved the accuracy of RTS in the general population of HEMS patients.
Annals of surgery, 2015
The aim of this study was to develop and internally validate a triage score that can identify trauma patients at the scene who would potentially benefit from helicopter emergency medical services (HEMS). Although survival benefits have been shown at the population level, identification of patients most likely to benefit from HEMS transport is imperative to justify the risks and cost of this intervention. Retrospective cohort study of subjects undergoing scene HEMS or ground emergency medical services (GEMS) in the National Trauma Databank (2007-2012). Data were split into training and validation sets. Subjects were grouped by triage criteria in the training set and regression used to determine which criteria had a survival benefit associated with HEMS. Points were assigned to these criteria to develop the Air Medical Prehospital Triage (AMPT) score. The score was applied in the validation set to determine whether subjects triaged to HEMS had a survival benefit when actually transpor...
European Journal of Emergency Medicine, 2011
Link to publication in VU Research Portal citation for published version (APA) Giannakopoulos, G. F. (2012). Triage and assessment of injuries in early trauma care. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
Injury, 2012
Efficient triage may have a major influence on mortality and morbidity as well as financial consequences. A continuous effort to improve this decision making process and update the trauma alert criteria is being made. However, criteria for determining the evacuation priority are not well developed. We performed a prospective study to evaluate which pre-hospital parameters identify major trauma victims with an emphasis on a need for emergent surgical procedures. Methods: A prospective cohort included 601 patients admitted to a level one trauma centre over a three months period. The pre-hospital trauma alert criteria were recorded and set as independent variables. All major surgical procedures were graded in real time as: emergent, urgent, or not urgent. The ISS was calculated after completion of all the diagnostic workup. Patients were classified as major trauma victims if their calculated ISS was 16 or greater, and those needed an urgent intervention or intensive care. The relative risks (RR) for major trauma and a need for an emergent operation were calculated. Results: 243 (40%) patients were classified as having a major trauma. 39 (6.5%) patients required an emergent operative intervention: 24 for an active bleeding, 5 for a pericardial tamponade and 10 for an imminent cerebral herniation. Paramedic judgement and a penetrating injury to the trunk were the most common causes for over triage. However, a penetrating injury to the trunk had been the only clue that the victim needed an emergent operation in five cases. 128 patients had a pre-hospital Glasgow coma score (GCS) 12. Altered mental status was the most common and a significant predictor of both major trauma (RR of 3.00 with a 95% confidence interval (CI) of 1.98-4.53) and a need for an emergent operation (RR, 95% CI: 4.43, 2.28-8.58). Also, a systolic blood pressure 90 mmHg was highly associated with an emergent operation (RR, 95% CI: 11.69, 5.85-23.36). Conclusion: For determining the evacuation priority, we suggest a triage system based on three major criteria: mental status, hypotension and a penetrating injury to the trunk. Overall, the set of trauma alert criteria system can be further simplified and enable better utilisation of resources.
CJEM, 2010
We sought to evaluate the performance of the Prehospital Index (PHI), the high velocity impact (HVI) criterion and emergency medical technician (EMT) judgment for the prehospital triage of injured patients. The study population included all prehospital trauma patients transported by an emergency medical service to 2 level I trauma centres for adults. All prehospital run sheets were linked to trauma registry data. The main outcome was severe trauma, defined as death within 72 hours, admission to the intensive care unit within 24 hours or an Injury Severity Score greater than 15. We assessed sensitivity, specificity and rates of overtriage. Of 16,805 patients in the study population, 1113 (6.62%) had severe trauma. The combination of all 3 triage criteria (PHI score > or = 4, HVI presence and EMT judgment) performed best for identifying patients with severe trauma, with a sensitivity of 74.2% but with an overtriage rate of 85.1%. Alone, EMT judgment had the highest sensitivity and ...
International journal of emergency medicine, 2008
To assess among seriously injured accident victims whether change of the Triage Revised Trauma Score (T-RTS) between first assessment and arrival at the hospital independently predicts mortality. Prospective cohort study. The study analysed data on 507 trauma patients with multiple injuries and with a Hospital Trauma Index-Injury Severity Score (HTI-ISS) of 16 or higher, who were presented directly by ambulance services to the Accident & Emergency Department of the University Medical Centre Utrecht (the Netherlands) in 1999 and 2000. Compared to non-intubated patients whose T-RTS remained unchanged (reference category), the mortality risk was 3.1 times higher [95% confidence interval (CI): 1.5-6.3, p = 0.001] for patients with deteriorating T-RTS, 2.9 times higher (95% CI: 1.3-6.5, p < 0.001) for patients who had an initially good T-RTS but were nevertheless intubated and 5.7 times higher (95% CI: 3.6-9.0, p < 0.001) for patients who had an initially poor T-RTS and were intuba...