Location of Injury and Other Factors Associated With Increased Survival Among Severely Injured Geriatric Trauma Patients

Background Patients with a Trauma Injury Severity Score (TRISS) < .5 are termed “unexpected survivors.” There is scarce information published on this subset of geriatric patients whose survival is an anomaly. Methods This is a retrospective case-control study examining all geriatric patients (age ≥65) not expected to survive (TRISS<.5) in the Pennsylvania Trauma Outcome Study (PTOS) database from 2013 to 2017. Primary outcome was survival to discharge. We selected 10 clinically important variables for logistic regression analysis as possible factors that may improve survival. Results 1336 patients were included, 395 (29.6%) were unexpected survivors. Factors that improved survival odds are the following: Place of injury: street/highway (AOR:0.51; 95% CI: .36-.73, P < .001) and residential institution (AOR:0.46; 95% CI: .21-.98, P = .043); and presence of Benzodiazepines (AOR:0.49; 95% CI: .31-.77, P = .002) or ethanol (AOR:0.57; 95% CI: .34-.97, P = .040). Factors that decreased survival odds are the following: Hypotension (AOR: 8.59; 95% CI: 4.33-17.01, P < .001) and hypothermia (AOR: 1.58; 95% CI: 1.10-2.28, P = .014). Gender, race/ethnicity, blood transfusion in first 24 hours, shift of presentation to Emergency Department, place of injury (farm, industrial, recreational, or public building), use of Tetrahydrocannabinol, amphetamines or opioids, and level of trauma activation did not impact survival. Discussion Location of injury (street/highway and residential institution) and ethanol or benzodiazepine use led to a significant increased survival in severely injured geriatric patients. Hypotension and hypothermia led to decreased survival. Future studies should determine possible reasons these factors lead to survival (and identify additional factors) to focus efforts in these areas to improve outcomes in geriatric trauma.

Continued Relevance of Initial Temperature Measurement in Trauma Patients

Objectives Hypothermia occurs in 30-50% of severely injured trauma patients and is associated with multiple metabolic derangements and worsened outcomes. However, hypothermia continues to be under-diagnosed which leads to inadequate triage and treatment in trauma patients. Our study set out to determine if hypothermia is an independent predictor of mortality in trauma patients. Methods We retrospectively reviewed data of all trauma activation patients over a 5-year period. Data were collected on patient demographics, initial core temperature, Glasgow Coma Scale (GCS) on presentation, and injury severity score (ISS). Patients were then stratified into groups based on presenting temperature, ISS, and GCS. Outcomes compared were mortality, blood products received, and intensive care unit (ICU) length of stay. Correlations and logistic regression were used to test the hypotheses. Results Survival and temperature data were reviewed on 15,567 patients. Initial temperature was not significantly associated with ICU length of stay or blood products transfused ( P = .21 and P = .08, respectively). However, odds ratio of mortality in hypothermic patients (<35°C) compared to normothermic patients (35-39°C) was 3.95 (95% CI 2.90-5.41). When controlling for GCS and ISS, separately, temperature remained an independent predictor of mortality. Conclusions Hypothermia is an independent risk factor for mortality in trauma patients. It remains crucial to obtain accurate presenting temperatures in trauma patients in order to triage and treat hypothermia. Based on our data, obtaining core temperatures and rapidly treating hypothermia continues to be a vital part of the secondary survey of trauma patients.

Comparison of Outcome Tools Used to Test Mass-Casualty Algorithms in the Pediatric Population

Introduction: Mass-casualty incident (MCI) algorithms are used to sort large numbers of patients rapidly into four basic categories based on severity. To date, there is no consensus on the best method to test the accuracy of an MCI algorithm in the pediatric population, nor on the agreement between different tools designed for this purpose. Study Objective: This study is to compare agreement between the Criteria Outcomes Tool (COT) to previously published outcomes tools in assessing the triage category applied to a simulated set of pediatric MCI patients. Methods: An MCI triage category (black, red, yellow, and green) was applied to patients from a pre-collected retrospective cohort of pediatric patients under 14 years of age brought in as a trauma activation to a Level I trauma center from July 2010 through November 2013 using each of the following outcome measures: COT, modified Baxt score, modified Baxt combined with mortality and/or length-of-stay (LOS), ambulatory status, mortality alone, and Injury Severity Score (ISS). Descriptive statistics were applied to determine agreement between tools. Results: A total of 247 patients were included, ranging from 25 days to 13 years of age. The outcome of mortality had 100% agreement with the COT black. The “modified Baxt positive and alive” outcome had the highest agreement with COT red (65%). All yellow outcomes had 47%-53% agreement with COT yellow. “Modified Baxt negative and <24 hours LOS” had the highest agreement with the COT green at 89%. Conclusions: Assessment of algorithms for triaging pediatric MCI patients is complicated by the lack of a gold standard outcome tool and variability between existing measures.

A Survey of Residency Directors in Academic Trauma Centers for Policies on Airway Management in The Trauma Ward

Background Despite its presence as a critical procedure in the trauma setting, airway management is not performed uniformly, varying between institutions, particularly with personnel involved in decision-making. Past literature has noted a trend in which emergency medicine physicians assumed greater responsibility for primary management of airways in the trauma ward. In addition, many institutions have adopted tiered activation systems for traumas in order to improve patient care, deploying resources more effectively. In this study, a survey of residency directors was deployed to assess trends in airway management. Methods A validated survey was distributed to residency directors in anesthesiology, general surgery and emergency medicine in 190 Level I trauma centers in the United States. Questions assessed personnel management, complication tracking and difficult airway prediction factors, amongst other considerations for airway management in the trauma bay. Results Respondents completed the survey at a rate of 23.8% of those solicited. A majority of respondents indicated that emergency medicine physicians are primary airway managers in the trauma bay and that their institutions utilize tiered trauma activation systems at 77.4% and 95.6% respectively. Anesthesia providers were immediately available in 81% of respondent institutions with inconclusive data regarding protocols for delineating anesthesia involvement in difficult airways. More than a third of respondents indicated their institution either does not track airway complications or they did not know if complications were tracked. Finally, nine different criteria were used in varying degrees by respondents’ institutions to predict the presence of a difficult airway, including such factors as head/face trauma, airway fluid and obesity. Conclusion The trend towards airway management by emergency medicine physicians in the trauma bay continues, with anesthesia personnel available in many situations to assist in complicated patients. Complication tracking for airway management remains inconsistent, as does the criteria for prediction of the presence of difficult airways.

627 Strategies for Reducing Emergency Department Lengths of Stay for Admitted Pediatric Burn Patients

Introduction Various strategies to reduce emergency department (ED) lengths of stay (LOS) for admitted pediatric burn patients may be employed as a quality improvement project. Decreasing ED LOS may promote patient outcomes and reduce morbidity. Initial discussions were brought forth during trauma and burn multidisciplinary peer review rounds in March 2019 and have persisted to present day. Methods Several strategies, such as preparation of the burn unit staff within one hour of patient arrival in ED, notification to the burn unit by the burn attending of an incoming pediatric burn patient, allowing the PICU charge nurses or advisors to assist with room set up and admissions, and creating a checklist to assist PICU nurses and advisors in helping prepare for anticipating inpatient admissions. These strategies were designed and enforced in March/April 2019. In addition to these action plans, trauma activation alerts were added in December 2019 to the burn charge nurse phone for pediatric burn trauma one and trauma alerts for more expedient notifications. Finally, communication efforts between ED and burn leadership teams were conducted in June 2020 to help with additional mitigating of ED LOS, such as discussing the appropriateness of specialty consults while in the ED. Results Initial ED LOS was reduced from 209 minutes in March 1019 to 150 minutes in June 2019. Increased trends were noted in early 2020, with a peak at 244 minutes in July 2020. Additional interventions, such as trauma activation alerts and ED/Burn team communications, did not provide sustainable long-term reductions. Conclusions Recent strategies to reduce overall ED LOS trends have been beneficial, but not consistent, in sustaining downward trends. Action to perform a gap analysis to discover persistent barriers and to introduce additional structure, such as a burn trauma one algorithm, may provide stability to this metric.

Unexpected severe intra-abdominal injuries resulting from a ground-level fall in an elderly patient with a large staghorn calculus

A 70-year-old woman on warfarin was transported to the emergency department after a ground-level fall, injuring her left backside. Criteria for geriatric trauma activation was not met. An episode of haematuria created suspicion for an intra-abdominal injury, prompting a point-of-care ultrasound (POCUS) Focused Assessment with Sonography for Trauma scan, which was positive. Subsequent pan-scanning discovered a multitude of injuries, including low-grade left renal and splenic lacerations, multiple left rib fractures and a haemothorax. Patient also had a supratherapeutic International Normalized Ratio (INR), which was reversed with 4-factor Prothrombin Complex Concentrate (4F-PCC). She was admitted to the intensive care unit, underwent urgent thoracostomy and had a complicated hospital course. Moreover, an incidental large staghorn calculus in the left kidney might have contributed shearing forces. In summary, under triage of this patient emphasised the importance of performing detailed primary and secondary surveys, including POCUS, for all geriatric ground-level fall patients on anticoagulants to allow for rapid diagnosis and treatment of potential serious injuries.

Radiographic Reread Protocols to Identify Clinically Relevant Errors in Initial Trauma Evaluations

Introduction Diagnostic radiology interpretive errors in trauma patients can lead to missed diagnoses, compromising patient care. Due to this, our level II trauma center implemented a reread protocol of all radiographic imaging within 24 hours on our highest trauma activation level (Code T). We sought to determine the efficacy of this reread protocol in identifying missed diagnoses in Code T patients. We hypothesized that a few, but clinically relevant errors, would be identified upon reread. Methods All radiographic study findings (initial read and reread) performed for Code T admissions from July 2015 to May 2016 were queried. The reviewed radiological imaging was given one of four designations: agree with interpretation, minor (non-life threatening) nonclinically relevant error(s)—addendum/correction required or clinically relevant error(s) (major [life threatening] and minor)—addendum/correction required, and trauma surgeon notified. The results were compiled, and the number of each type of error was calculated. Results Of the 752 radiological imaging studies reviewed on the 121 Code T patients during this period, 3 (0.40%) contained minor clinically relevant errors, 11 (1.46%) contained errors that were not clinically relevant, and 738 (98.1%) agreed with the original interpretation. The three clinically relevant errors included a right mandibular fracture found on X-ray and a temporal bone fracture that crossed the clivus and bilateral rib fractures found on computerized tomography. Discussion Clinically relevant errors, although minimal, were discovered during rereads for Code T patients. Although the clinical errors were significant, none affected patient outcomes. We propose that the implementation of reread protocols should be based upon institution-specific practices.