Trauma Resuscitation Research Articles

Discovering interpretable medical process models: A case study in trauma resuscitation

Understanding the actual work (i.e., “work-as-done”) rather than theorized work (i.e., “work-as-imagined”) during complex medical processes is critical for developing approaches that improve patient outcomes. Although process mining has been used to discover process models from medical activity logs, it often omits critical steps or produces cluttered and unreadable models. In this paper, we introduce a TraceAlignment-based ProcessDiscovery method called TAD Miner to build interpretable process models for complex medical processes. TAD Miner creates simple linear process models using a threshold metric that optimizes the consensus sequence to represent the backbone process, and then identifies both concurrent activities and uncommon-but-critical activities to represent the side branches. TAD Miner also identifies the locations of repeated activities, an essential feature for representing medical treatment steps. We conducted a study using activity logs of 308 pediatric trauma resuscitations to develop and evaluate TAD Miner. TAD Miner was used to discover process models for five resuscitation goals, including establishing intravenous (IV) access, administering non-invasive oxygenation, performing back assessment, administering blood transfusion, and performing intubation. We quantitively evaluated the process models with several complexity and accuracy metrics, and performed qualitative evaluation with four medical experts to assess the accuracy and interpretability of the discovered models. Through these evaluations, we compared the performance of our method to that of two state-of-the-art process discovery algorithms: Inductive Miner and Split Miner. The process models discovered by TAD Miner had lower complexity and better interpretability than the state-of-the-art methods, and the fitness and precision of the models were comparable. We used the TAD process models to identify (1) the errors and (2)the best locations for the tentative steps in knowledge-driven expert models. The knowledge-driven models were revised based on the modifications suggested by the discovered models. The improved modeling using TAD Miner may enhance understanding of complex medical processes.

Whole Blood Trauma Resuscitation in Community Trauma Centers Confers Survival Benefit Over Component Therapy.

Whole blood (WB) for trauma resuscitation in civilian populations has become more common. The utilization of WB in community trauma centers has not been reported. Previous studies have centered around large academic medical centers. We hypothesized that WB-based resuscitation compared to component-only resuscitation (CORe) would demonstrate a survival benefit and that WB resuscitation is safe, feasible, and benefits trauma patients regardless of setting. Our results indicate that receiving whole blood during resuscitation conferred a clear survival benefit to discharge, and this benefit was independent of ISS, age, gender, and initial SBP. We conclude WB should be incorporated into all resuscitation protocols for exsanguinating trauma patients and preferred over component therapy in all centers treating trauma patients.

The Use of Blood in Pediatric Trauma Resuscitation

The Use of Blood in Pediatric Trauma Resuscitation

Use of Whole Blood in Civilian Trauma Resuscitation: Is It Better Than Component Therapy?

Use of Whole Blood in Civilian Trauma Resuscitation: Is It Better Than Component Therapy?

Trauma Team High-Fidelity Simulation Training in a Rural Level III Trauma Center: An Interprofessional Experience.

Emergency department trauma resuscitation requires teamwork and high-stakes clinical decision-making. Rural trauma centers with low trauma activation volumes must ensure that resuscitations are efficient and safe. The purpose of this article is to describe the implementation of high-fidelity, interprofessional simulation training to foster trauma teamwork and role identification for trauma team members responding to trauma activations in the emergency department. High-fidelity, interprofessional simulation training was developed for members of a rural Level III trauma center. Subject matter experts created trauma scenarios. An embedded participant led the simulations using a guidebook that outlined the scenario and learner objectives. The simulations were implemented from May 2021 through September 2021. Postsimulation survey results identified that participants found training with other professions valuable and that knowledge was gained. Interprofessional simulations enhance team communication and skills. Combining interprofessional education with high-fidelity simulation creates a learning environment that optimizes trauma team function.

Association of blood product ratios with early mortality in pediatric trauma resuscitation: A time-dependent analysis from the National Trauma Databank.

Injured children with severe hemorrhage often receive blood product transfusions with ratios of plasma and platelets to packed red blood cells (PRBCs) approaching 1:1:1. Whether blood product ratios vary during pediatric resuscitation is unknown. This study (1) described precise timing of pediatric blood product administration, (2) characterized changes in blood product ratios over time, and (3) evaluated the association of blood products with early mortality while incorporating time-varying factors. Pediatric (younger than 18 years) trauma patients receiving high-volume transfusion (>40 mL/kg total products or >2 U PRBC or whole blood, during first 4 hours) were obtained from the 2017 to 2019 Trauma Quality Improvement Program database. The time of each individual product transfusion was recorded, along with demographics, injury details, and times of death. Patients were assigned to blood product groups at 15-minute intervals: high plasma/PRBC ratio (>1:1) with platelets, high plasma/PRBC ratio (>1:1) without platelets, low plasma/PRBC ratio (<1:1), PRBC only, and whole blood. Cox proportional hazards modeling for 24-hour mortality was performed, including blood product group as a time-varying variable and adjusting for relevant covariates. Of 1,152 included patients (median age, 15 years; 32% penetrating, 28% severe traumatic brain injury [sTBI]), 18% died within 24 hours. During the resuscitation period, the number of patients in high-ratio groups increased over time, and patients switched blood product groups up to six times. There was no significant difference in mortality by blood product group. Among patients with sTBI, there was a strong trend toward lower mortality among high plasma/PRBC without platelets versus high plasma/PRBC with platelets (hazard ratio, 0.55; p = 0.07). No significant association of high ratios or whole blood with mortality was seen when time-varying factors were incorporated. The impact of balanced resuscitation strategies, particularly platelet transfusion, may be greatest among patients with sTBI. Optimizing balanced resuscitation for children requires appropriately designed prospective studies. Therapeutic/Care Management; Level IV.

Evaluation of Resuscitative Endovascular Balloon Occlusion of the Aorta Complications in a Community-Based Trauma Center.

Resuscitative endovascular balloon occlusion of the aorta (REBOA) is a method of management of noncompressible torso hemorrhage in trauma patients. Increased utilization has shown increased vascular complications and mortality. This study aimed to evaluate complications of REBOA placement in a community trauma setting. A 3-year retrospective review was performed of all trauma patients that underwent REBOA placement. Data collection included demographics, injury characteristics, complications, and mortality. Twenty-three patients were included, and the overall mortality was 65.2%. Most patients suffered blunt trauma (73.9%), and median ISS and TRISS (survival probability) were 24 and 42.2%, respectively. The median time to REBOA placement was 22 minutes, and hemorrhagic control was achieved in all patients. The most common complication was acute kidney injury at 34.8%. There was one complication associated with placement that required vascular intervention but did not lead to limb amputation. Resuscitative endovascular balloon occlusion of the aorta was shown to have higher rates of acute kidney injury, similar rates of vascular injury, and lower rate of limb complications compared to published literature. Resuscitative endovascular balloon occlusion of the aorta remains a useful tool for trauma resuscitation without the fear of increased complications.

Development of trauma team cognition can be explained by ”split vision”: A grounded theory study

ABSTRACT The aim of this study was to explore interaction of interprofessional hospital trauma teams. A theory about how team cognition is developed through a dynamical process was established using grounded theory methodology. Video recordings of in-real-life resuscitations performed in the emergency ward of a Scandinavian mid-size urban hospital were collected and eligible for inclusion using theoretical sampling. By analyzing interactions during seven trauma resuscitations, the theory that trauma teams perform patient assessment and resuscitation by alternating between two process modes, the two main categories “team positioning” and “sensitivity to the patient,” was generated. The core category “working with split vision” explicates how the teams interplay between the two modes to coordinate team focus with an emergent mental model of the specific situation. Split vision ensures that deeper aspects of the team, such as culture, knowledge, empathy, and patient needs are absorbed to continuously adapt team positioning and create precision in care for the specific patient.

Trends in emergency medicine resident procedural reporting over a 10-year period.

Procedural competency is expected of all emergency medicine (EM) residents upon graduation. The ACGME requires a minimum number of essential procedures to successfully complete training. However, data are limited on the actual number of procedures residents perform and prior studies are limited to single institutions over short time periods. This study sought to assess the number of Key Index Procedures completed during EM residency training and evaluate trends over time. We conducted a retrospective review of graduating EM resident procedure logs across eight ACGME accredited residency programs over the last 10 years (2013-2022). Sites were selected to ensure diversity of program length, program type, and geography. All data from EM residents graduating in 2013-2022 were eligible for inclusion. Data from residents from combined training programs, those who did not complete their full training at that institution (i.e., transferred in/out), or those who did not have data available were excluded. We determined the list of procedures based upon the ACGME Key Index Procedures list. Sites obtained totals for each of the identified procedures for each resident upon graduation. We calculated the mean and 95% CI for each procedure. We collected data from a total of 914 residents, with 881 (96.4%) meeting inclusion criteria. The most common procedures were point-of-care ultrasound, adult medical resuscitation, adult trauma resuscitation, and intubation. The least frequent procedures included pericardiocentesis, cricothyroidotomy, cardiac pacing, vaginal delivery, and chest tubes. Most procedures were stable over time with the exception of lumbar punctures (decreased) and point-of-care ultrasound (increased). In a national sample of EM programs, procedural numbers remained stable except for lumbar puncture and ultrasound. This information can inform residency training curricula and accreditation requirements.

Impact of Video Education to Train Trauma Staff

Background:Management of trauma patients is challenging and requires a coordinated team effort inside a crowded trauma bay. Errors can result in disastrous consequences. Trauma is the leading cause of death in the United States of people younger than the age of 45. Maintaining a cohesive team dynamic is paramount, but academic medical centers must deal with the constancy of rotating staff and learners that may be unfamiliar with resuscitation workflows. This project aims to improve the trauma resuscitation process by identifying the gaps in knowledge and process through auditing of the highest-level trauma activations.&#x0D; Methods:This is a pre- and post-intervention prospective cohort study of adherences to a standardized trauma resuscitation process through the use of an educational video at a busy level 1 academic trauma center. Process improvement resulting from the educational video will be assessed quantitatively through in-person and video review audits using a pre-defined checklist. This checklist scores the crucial elements highlighted in the educational video that must be addressed in each trauma resuscitation. The goal of this project is to illustrate improvement of the trauma resuscitation process through the comparison of trauma resuscitations audited before and after implementation of the training video.&#x0D; Results:The most commonly observed deficits have been related to the donning of correct personal protective equipment (PPE) and communication. The most common PPE left out was eye protection and hair covering. Shortcomings in communication include failure to practice 1:1 communication and the performance of adequate pre-briefs.&#x0D; Potential Impact:This study will establish a feasible method of improving the trauma resuscitation process at IU Health Methodist Hospital. Potential next steps of this study’s conclusions include improving the trauma resuscitation process at other Indianapolis trauma 1 centers outside of Methodist Hospital, and the implementation of similar video education training for additional team-based procedures.

Place the Sheath: Emergent 7 French Femoral Sheath Placement is Low Risk During Initial Trauma Resuscitation

Background: We hypothesized that emergent placement of 7 French (Fr) common femoral artery (CFA) sheaths during trauma resuscitation for potential resuscitative endovascular balloon occlusion of the aorta (REBOA) carries a low complication rate.Methods: Trauma patients at a Level I trauma center with emergent CFA access from January 2016 through to December 2020 were reviewed. CFA access was categorized as (1) 7 Fr sheath plus REBOA (REBOA) and (2) 7 Fr sheathwithout REBOA (Sheath). Outcomes included mortality and vascular complications. Results: 157 patients underwent emergent CFA access. Sixty-nine (43.9%) patients had a 7 Fr CFA sheath, and 88 (56.1%) progressed to REBOA. The mortality rate was similar (Sheath 30.4% vs. REBOA 34.1%, p = 0.63). The REBOA cohort had a significantly higher complication rate (22.7%) compared to the Sheath cohort (4.3%, p = 0.001).Conclusions: Emergent 7 Fr CFA sheath placement during trauma resuscitation is low risk, suggesting empiric sheath placement is warranted in potential REBOA candidates.

Evaluation of critical care burden following traumatic injury from two randomized controlled trials

Trauma resuscitation practices have continued to improve with new advances targeting prehospital interventions. The critical care burden associated with severely injured patients at risk of hemorrhage has been poorly characterized. We aim to describe the individual and additive effects of multiorgan failure (MOF) and nosocomial infection (NI) on delayed mortality and resource utilization. A secondary analysis of harmonized data from two large prehospital randomized controlled trials (Prehospital Air Medical Plasma (PAMPer) Trial and Study of Tranexamic Acid during Air and Ground Medical Prehospital Transport (STAAMP) Trial) was conducted. Only those patients who survived beyond the first 24 hours post-injury and spent at least one day in the ICU were included. Patients were stratified by development of MOF only, NI only, both, or neither and diagnosis of early (≤ 3 days) versus late MOF (> 3 days). Risk factors of NI and MOF, time course of these ICU complications, associated mortality, and hospital resource utilization were evaluated. Of the 869 patients who were enrolled in PAMPer and STAAMP and who met study criteria, 27.4% developed MOF only (n = 238), 10.9% developed NI only (n = 95), and 15.3% were diagnosed with both MOF and NI (n = 133). Patients developing NI and/or MOF compared to those who had an uncomplicated ICU course had greater injury severity, lower GCS, and greater shock indexes. Early MOF occurred in isolation, while late MOF more often followed NI. MOF was associated with 65% higher independent risk of 30-day mortality when adjusting for cofounders (OR 1.65; 95% CI 1.04–2.6; p = 0.03), however NI did not significantly affect odds of mortality. NI was individually associated with longer mechanical ventilation, ICU stay, hospital stay, and rehabilitation requirements, and the addition of MOF further increased the burden of inpatient and post-discharge care. MOF and NI remain common complications for those who survive traumatic injury. MOF is a robust independent predictor of mortality following injury in this cohort, and NI is associated with higher resource utilization. Timing of these ICU complications may reveal differences in pathophysiology and offer targets for continued advancements in treatment.

Association of red blood cells and plasma transfusion versus red blood cell transfusion only with survival for treatment of major traumatic hemorrhage in prehospital setting in England: a multicenter study

BackgroundIn-hospital acute resuscitation in trauma has evolved toward early and balanced transfusion resuscitation with red blood cells (RBC) and plasma being transfused in equal ratios. Being able to deliver this ratio in prehospital environments is a challenge. A combined component, like leukocyte-depleted red cell and plasma (RCP), could facilitate early prehospital resuscitation with RBC and plasma, while at the same time improving logistics for the team. However, there is limited evidence on the clinical benefits of RCP.ObjectiveTo compare prehospital transfusion of combined RCP versus RBC alone or RBC and plasma separately (RBC + P) on mortality in trauma bleeding patients.MethodsData were collected prospectively on patients who received prehospital transfusion (RBC + thawed plasma/Lyoplas or RCP) for traumatic hemorrhage from six prehospital services in England (2018–2020). Retrospective data on patients who transfused RBC from 2015 to 2018 were included for comparison. The association between transfusion arms and 24-h and 30-day mortality, adjusting for age, injury mechanism, age, prehospital heart rate and blood pressure, was evaluated using generalized estimating equations.ResultsOut of 970 recruited patients, 909 fulfilled the study criteria (RBC + P = 391, RCP = 295, RBC = 223). RBC + P patients were older (mean age 42 vs 35 years for RCP and RBC), and 80% had a blunt injury (RCP = 52%, RBC = 56%). RCP and RBC + P were associated with lower odds of death at 24-h, compared to RBC alone (adjusted odds ratio [aOR] 0.69 [95%CI: 0.52; 0.92] and 0.60 [95%CI: 0.32; 1.13], respectively). The lower odds of death for RBC + P and RCP vs RBC were driven by penetrating injury (aOR 0.22 [95%CI: 0.10; 0.53] and 0.39 [95%CI: 0.20; 0.76], respectively). There was no association between RCP or RBC + P with 30-day survival vs RBC.ConclusionPrehospital plasma transfusion for penetrating injury was associated with lower odds of death at 24-h compared to RBC alone. Large trials are needed to confirm these findings.

The volume of infusion fluids correlates with treatment outcomes in critically ill trauma patients.

Appropriate fluid management is essential in the treatment of critically ill trauma patients. Both insufficient and excessive fluid volume can be associated with worse outcomes. Intensive fluid resuscitation is a crucial element of early resuscitation in trauma; however, excessive fluid infusion may lead to fluid accumulation and consequent complications such as pulmonary edema, cardiac failure, impaired bowel function, and delayed wound healing. The aim of this study was to examine the volumes of fluids infused in critically ill trauma patients during the first hours and days of treatment and their relationship to survival and outcomes. We retrospectively screened records of all consecutive patients admitted to the intensive care unit (ICU) from the beginning of 2019 to the end of 2020. All adults who were admitted to ICU after trauma and were hospitalized for a minimum of 2 days were included in the study. We used multivariate regression analysis models to assess a relationship between volume of infused fluid or fluid balance, age, ISS or APACHE II score, and mortality. We also compared volumes of fluids in survivors and non-survivors including additional analyses in subgroups depending on disease severity (ISS score, APACHE II score), blood loss, and age. A total of 52 patients met the inclusion criteria for the study. The volume of infused fluids and fluid balance were positively correlated with mortality, complication rate, time on mechanical ventilation, length of stay in the ICU, INR, and APTT. Fluid volumes were significantly higher in non-survivors than in survivors at the end of the second day of ICU stay (2.77 vs. 2.14 ml/kg/h) and non-survivors had a highly positive fluid balance (6.21 compared with 2.48 L in survivors). In critically ill trauma patients, worse outcomes were associated with higher volumes of infusion fluids and a more positive fluid balance. Although fluid resuscitation is lifesaving, especially in the first hours after trauma, fluid infusion should be limited to a necessary minimum to avoid fluid overload and its negative consequences.

Not as “D”eadly as once thought – the risk of D-alloimmunization and hemolytic disease of the fetus and newborn following RhD-positive transfusion in trauma

ABSTRACTThe use of blood products to resuscitate injured and massively bleeding patients in the prehospital and early in-hospital phase of the resuscitation is increasing. Using group O red blood cells (RBC) and low titer group O whole blood (LTOWB) avoids an immediate hemolytic reaction from recipient’s naturally occurring anti-A and – B, but choosing the RhD type for these products is more nuanced and requires the balancing of product availability and survival benefit against the risk of D-alloimmunization, especially in females of childbearing potential (FCP) due to the possible future occurrence of hemolytic disease of the fetus and newborn (HDFN). Recent models have estimated the risk of fetal/neonatal death from HDFN resulting from D-alloimmunization of an FCP during her trauma resuscitation at between 0-6.5% depending on her age at the time of the transfusion and other societal factors including trauma mortality, her age when she becomes pregnant, frequency of different RHD genotypes in the population, and the probability that the woman will have children with different fathers; this is counterbalanced by an approximately 24% risk of death from hemorrhagic shock. This review will discuss the different models of HDFN outcomes following RhD-positive transfusion as well as the results of recent surveys where the public was asked about their preferences for urgent transfusion in light of the risks of fetal/neonatal adverse events.

Determining the Association Between Emergency Department Crowding and Debriefing After Pediatric Trauma Resuscitations.

Debriefing in the pediatric emergency department (PED) is an invaluable tool to improve team well-being, communication, and performance. Despite evidence, surveys have reported heavy workload as a barrier to debriefing leading to missed opportunities for improvement in an already busy ED. The study aims to determine the association between the incidence of debriefing after pediatric trauma resuscitations and PED crowding. A total of 491 Trauma One activations in Riley Children's Hospital Pediatric Emergency Department that presented between April 2018 to December 2019 were included in the study. Debriefing documentations, patient demographics, time and date of presentation, mechanism of injury, injury severity score, disposition from PED, and length of stay (LOS) were collected and analyzed. The National Emergency Department Overcrowding Scale score at arrival, Average LOS, total PED census, total PED waiting room census, and rates of left without being seen were compared between groups. Of 491 Trauma One activations presented to our PED, 50 (10%) trauma evaluations had documented debriefing. The National Emergency Department Overcrowding Scale score at presentation was significantly lower in those with debriefing versus without debriefing. In addition, the PED hourly census, waiting room census, average LOS, and left without being seen were also significantly lower in the group with debriefing. In addition, trauma cases with debriefing had a higher proportion of patients with profound injuries and discharges to the morgue. Pediatric emergency department crowding is a significant barrier to debriefing after trauma resuscitations. However, profound injuries and traumatic pediatric deaths remain the strongest predictors in conducting debriefing regardless of PED crowding status.

Evolving Trends in Trauma Resuscitation

Evolving Trends in Trauma Resuscitation

Fluid Creep in ARDS after Shock Resuscitation of Trauma, Burns, Sepsis, and Acute Pancreatitis Patients: How Much, Where, and How to Find it?

I peer-reviewed this article with great interest but was rejected by the editor

“TEG” talks: technology worth spreading?

“TEG” talks: technology worth spreading?

Combat Vascular Access: A Scoping Review.

Medical leadership must decide how to obtain vascular access in a combat environment. Adequate combat trauma resuscitation requires efficient vascular access. A search of the Medline and EMBASE databases was conducted to find articles on combat vascular access. The primary dataset of interest was the type of vascular access obtained. Other data reviewed included who performed the intervention and the success rate of the intervention. The search strategy produced 1,339 results, of which 24 were included in the final analysis. Intravenous (IV), intraosseous (IO), and central venous access have all been used in the prehospital combat environment. This review summarizes the available combat literature to help commanders make an evidence-based decision about their prehospital vascular access strategy.