Prospective validation of a hospital triage predictive model to decrease undertriage: an EAST multicenter study

Background

Tiered trauma team activation (TTA) allows systems to optimally allocate resources to an injured patient. Target undertriage and overtriage rates of <5% and <35% are difficult for centers to achieve, and performance variability exists. The objective of this study was to optimize and externally validate a previously developed hospital trauma triage prediction model to predict the need for emergent intervention in 6 hours (NEI-6), an indicator of need for a full TTA.

Methods

The model was previously developed and internally validated using data from 31 US trauma centers. Data were collected prospectively at five sites using a mobile application which hosted the NEI-6 model. A weighted multiple logistic regression model was used to retrain and optimize the model using the original data set and a portion of data from one of the prospective sites. The remaining data from the five sites were designated for external validation. The area under the receiver operating characteristic curve (AUROC) and the area under the precision-recall curve (AUPRC) were used to assess the validation cohort. Subanalyses were performed for age, race, and mechanism of injury.

Results

14 421 patients were included in the training data set and 2476 patients in the external validation data set across five sites. On validation, the model had an overall undertriage rate of 9.1% and overtriage rate of 53.7%, with an AUROC of 0.80 and an AUPRC of 0.63. Blunt injury had an undertriage rate of 8.8%, whereas penetrating injury had 31.2%. For those aged ≥65, the undertriage rate was 8.4%, and for Black or African American patients the undertriage rate was 7.7%.

Conclusion

The optimized and externally validated NEI-6 model approaches the recommended undertriage and overtriage rates while significantly reducing variability of TTA across centers for blunt trauma patients. The model performs well for populations that traditionally have high rates of undertriage.

Level of evidence

2.

Liver transplantation for severe hepatic trauma: A multicenter analysis from the UNOS data set

BACKGROUND

Orthotopic liver transplantation (OLT) is rarely indicated after hepatic trauma but it can be the only therapeutic option in some patients. There are scarce data analyzing the surgical outcomes of OLT after trauma.

METHODS

We used the UNOS data set to identify patients who underwent OLT for trauma from 1987 to 2022 and compared them to a cohort of patients transplanted for other indications. Cox proportional hazard and multivariable logistic regression analyses were performed to assess predictors of graft and patient survival.

RESULTS

Seventy-two patients underwent OLT for trauma during the study period. Patients with trauma were more frequently on mechanical ventilation at the time of transplantation (26.4% vs. 7.6%, p < 0.001) and had a greater incidence of pretransplant portal vein thrombosis (12.5% vs. 4%, p = 0.002). Our 4:1 matched analysis showed that trauma patients had significantly shorter wait times, higher incidence of pretransplant portal vein thrombosis and prolonged length of stay. Trauma was associated with decreased overall graft survival (hazards ratio, 1.42; 95% confidence interval, 1.01-1.98), and increased length of stay ( p = 0.048). There were no significant differences in long-term patient survival.

CONCLUSION

Unique physiological and vascular challenges after severe hepatic trauma might be associated with decreased graft survival in patients requiring liver transplantation.

LEVEL OF EVIDENCE

Prognostic and Epidemiological; Level III.

Fragmenting projectiles: a case report and literature review of the G2 Radically Invasive Projectile

Innovations in projectile design present unique challenges for trauma surgeons when treating gunshot victims. The G2 Radically Invasive Projectile (G2 Research, Winder, Georgia, USA) (G2RIP) is a frangible, rapidly expanding bullet resulting in a distinct pattern of injury consisting of diffuse hemorrhage with multicavity trauma as well as unique radiographic features of the projectile. To efficiently manage patients injured by the G2RIP, trauma surgeons must be aware of these distinct characteristics, and of previous patterns in effective management such as liberal damage control and extensive use of CT. Understanding previous presentation and management of patients injured by the G2RIP can aid in improving patient care in the trauma center.

Common postbariatric surgery emergencies for the acute care surgeon: What you need to know

ABSTRACT

The field of bariatric and metabolic surgery has changed rapidly over the past two decades, with an exponential increase in case volumes being performed because of its proven efficacy for morbid obesity and obesity-related comorbidities. Although this increased volume of procedures has been accompanied by significant decrease in postoperative complication rates, there are numerous potential complications after bariatric surgery that may require urgent or emergent surgical evaluation or interventions. Many of these risks extend well beyond the early postoperative period and can present months to years after the index procedure. Acute care surgeons are increasingly covering most or all of the emergency general surgery services at many centers and must be familiar with the numerous bariatric surgical procedures being performed and their individual complication profile to provide optimal care for these frequently challenging patients. This article provides a focused and concise review of the common bariatric procedures being performed, their early and late complication profiles, and a practical guide to the optimal diagnostic evaluations, surgical interventions, and perioperative management options. The author group includes both acute care surgeons and bariatric surgeons with significant experience in the emergency management of the complicated postbariatric surgical patient.

LEVEL OF EVIDENCE

Literature Synthesis and Expert Opinion; Level V.

[Complications after pulmonary segmentectomy: Impact of the surgical approach]

INTRODUCTION

Pulmonary segmentectomy is becoming increasingly widespread but remains technically challenging. The aim of this study was to evaluate the impact of the surgical approach applied on postoperative complications after pulmonary segmentectomy.

METHODS

All patients having undergone pulmonary segmentectomy by thoracotomy, videothoracoscopy or robot-assisted surgery from 1st January 2018 to 31st December 2021 were included. The primary endpoint was the occurrence of postoperative complications. Secondary endpoints were operative time, length of hospital stay, 30-day readmission rate, 30-day and 90-day mortality.

RESULTS

Two hundred and twenty-three patients were included, 30% (n=67) in the thoracotomy group, 9.4% (n=21) in the videothoracoscopy group and 60.5% (n=135) in the robot-assisted surgery group. There was no difference in the occurrence of postoperative complications according to type of approach (P=0.564), 26.9% of patients (n=60) had at least one postoperative complication. There was no significant difference between the groups in terms of operative time (P=0.385), length of hospital stay (P=0.107), 30 and 90-day mortality (P=0.124 and P=0.249, respectively). Mini-invasive surgery significantly reduced the 30-day readmission rate (P=0.049).

CONCLUSION

The surgical approach applied does not influence the postoperative complications of pulmonary segmentectomy.

Efficacy of simulation-based training on transoesophageal echocardiography learning in a multicentre randomised controlled trial: SIMULATOR study

Background

Evidence on the impact of simulation-based training in transesophageal echocardiography (TEE) is scarce.

Purpose

We aimed to assess the efficacy of simulation-based versus traditional teaching on TEE knowledge and skills for cardiology residents.

Methods

Between November 2020 and November 2021, all consecutive cardiology residents inexperienced from TEE were randomised (1:1, n=324) through 42 French University Centers into two groups with or without simulation support (either a simulation group or a traditional group). The coprimary outcomes were the scores in the final theoretical and practical tests 3 months after the training. TEE duration and the feelings of residents were also assessed. An economic analysis was also performed.

Results

While the theoretical and practical test scores were similar between the two groups before the training (respectively P=0.80 and P=0.51), the residents in the simulation group displayed higher theoretical test and practical test scores after the training than those in the traditional group (respectively 47.2±15.6% vs. 38.3±19.8%, P&lt;0.0001 and 74.5±17.7% vs. 59.0±25.1%, P&lt;0.0001). Subgroups analyses showed that the efficacy of the simulation training was even greater when performed at the beginning of residency (P&lt;0.0001). After the training, the duration to perform a complete TEE was significantly lower in the simulation group than in the traditional group (respectively 8.3±1.4 min vs. 9.4±1.2 min, P&lt;0.0001). Finally, residents' feelings were better in the simulation group than in the traditional group across all components (P&lt;0.0001). Compared to the traditional group, the average additional cost per resident of the simulation program was respectively €1,785, €942 or €662 for 20, 40 and 60 residents.

Conclusion

Simulation-based teaching on TEE showed a significant improvement in knowledge, skills, and feelings of cardiology residents as well as a reduction in the duration to complete the examination.

Funding Acknowledgement

Type of funding sources: None.

Sensitivity Enhancement Using Chirp Transmission for an Ultrasound Arthroscopic Probe

Meniscal tear in the knee joint is a highly common injury that can require an ablation. However, the success rate of meniscectomy is highly impacted by difficulties in estimating the thin vascularization of the meniscus, which determines the healing capacities of the patient. Indeed, vascularization is estimated using arthroscopic cameras that lack of high sensitivity to blood flow. Here, we propose an ultrasound method for estimating the density of vascularization in the meniscus during surgery. This approach uses an arthroscopic probe driven by ultrafast sequences. To enhance the sensitivity of the method, we propose to use a chirp-coded excitation combined with a mismatched compression filter robust to the attenuation. This chirp approach was compared to a standard ultrafast emission and a Hadamard-coded emission using a flow phantom. The mismatched filter was also compared to a matched filter. Results show that, for a velocity of a few millimeters per second, the mismatched filter gives a 4.4-10.4-dB increase of the signal-to-noise ratio (SNR) compared to the Hadamard emission and a 3.1-6.6-dB increase compared to the matched filter. Such increases are obtained for a loss of axial resolution of 13% when comparing the point spread functions (PSFs) of the mismatched and matched filters. Hence, the mismatched filter allows increasing significantly the probe capacity to detect slow flows at the cost of a small loss in axial resolution. This preliminary study is the first step toward an ultrasensitive ultrasound arthroscopic probe able to assist the surgeon during meniscectomy.

A core outcome set for damage control laparotomy via modified Delphi method

OBJECTIVES

Damage control laparotomy (DCL) remains an important tool in the trauma surgeon's armamentarium. Inconsistency in reporting standards have hindered careful scrutiny of DCL outcomes. We sought to develop a core outcome set (COS) for DCL clinical studies to facilitate future pooling of data via meta-analysis and Bayesian statistics while minimizing reporting bias.

METHODS

A modified Delphi study was performed using DCL content experts identified through Eastern Association for the Surgery of Trauma (EAST) 'landmark' DCL papers and EAST ad hoc COS task force consensus.

RESULTS

Of 28 content experts identified, 20 (71%) participated in round 1, 20/20 (100%) in round 2, and 19/20 (95%) in round 3. Round 1 identified 36 potential COS. Round 2 achieved consensus on 10 core outcomes: mortality, 30-day mortality, fascial closure, days to fascial closure, abdominal complications, major complications requiring reoperation or unplanned re-exploration following closure, gastrointestinal anastomotic leak, secondary intra-abdominal sepsis (including anastomotic leak), enterocutaneous fistula, and 12-month functional outcome. Despite feedback provided between rounds, round 3 achieved no further consensus.

CONCLUSIONS

Through an electronic survey-based consensus method, content experts agreed on a core outcome set for damage control laparotomy, which is recommended for future trials in DCL clinical research. Further work is necessary to delineate specific tools and methods for measuring specific outcomes.

LEVEL OF EVIDENCE

V, criteria.

Detection of graphene's divergent orbital diamagnetism at the Dirac point

[Figure: see text].

All-cause mortality and cardiovascular death in 52091 patients with hypertrophic cardiomyopathy. A nationwide cohort study

Background

Patients with hypertrophic cardiomyopathy (HCM) have high risk of death related to cardiovascular (CV) death. Improvements in risk stratification are needed to help identify those HCM patients at higher risk of all-cause death and cardiovascular death.

Methods

This French longitudinal cohort study from the database covering hospital care from 2010 to 2019 analyzed adultshospitalized with isolated HCM. The overall sample of 52,091 patients was randomly partitioned into derivation (n=26,067) and validation (n=26,024) populations. A logistic regression model was used to construct HCM death and CV-death scores in the derivation sample, which were compared to the Charlson index, Frailty index and CHA2DS2VASc scores using c-indexes and calibration analysis.

Results

In 52,091 patients with isolated HCM, 12,676 (24.0%) died during follow-up of 3.0±2.8 years (median 2.3, interquartile range 0.4–5.0). Rate of all-cause death was 8.10%/year (7.96–8.24) and was 2.76%/year (2.68–2.84) for CV death.Independent predictors of CV death in HCM were older age, diabetes mellitus, heart failure, history of pulmonary edema, atrial fibrillation, ventricular tachycardia or fibrillation, ischemic stroke, while smoking and poor nutrition were associated with better survival (all p&lt;0.05). In addition to these, male sex, vascular disease, alcohol related diagnoses, kidney disease, lung disease, liver disease anemia and cancer were independent predictors of all-cause death. In the derivation cohort, c-indexes for the HCM death score were 0.720 (0.713–0.727) for all-cause death and 0.695 (0.685–0.705) for CV death. For the HCM CV-death score, c-indexes were 0.679 (0.671–0.686) for all-cause death and 0.723 (0.712–0.733) for CV death. Performances were very similar in the validation cohort. Both scores had good calibrations. Charlson and Frailty indexes however had a better clinical usefulness than the HCM death score and HCM CV-death scores for predicting all-cause death. Decision curve analysis for CV death demonstrated that the HCM CV-death score had the best clinical usefulness of all the tested risk scores.

Conclusion

HCM patients have a high risk of all-cause and CV mortality. Independent predictors of CV-mortality in HCM were used to derive and validate a simple risk prediction model (French HCM CV-mortality score) which performed better than clinical scores, Charlson Index and Frailty Index; showing the best clinical usefulness, with good calibration.

Funding Acknowledgement

Type of funding sources: None.

[Readmissions after lung resection in France: The PMSI database]

BACKGROUND

Readmission within 30 days is an indicator of the quality of care, because it often reflects post-discharge care that is not optimal. The objective of this work is to measure over time on the one hand the readmission rate and on the other hand the number of hospitals with a standardized readmission rate beyond the national average.

METHOD

All patients with major pulmonary resection for lung cancer in France were extracted from the PMSI national database. Readmission within 30 days was defined as any new hospitalization either in the same hospital or in another establishment.

RESULTS

From January 1, 2005 to December 31, 2018, 110,603 patients were included. The 30-day all-cause readmissions rate was 24.9% (n=27,540). Patients after pneumonectomy had a readmission rate of 37% (n=4918) and 23% after lobectomy (n=2684) (P<0.0001). For the first period, we counted 10 hospitals with a standardized readmissions rate above the 99.8 limit and 10 hospitals above the 95% limit. For the second period, 8 hospitals had a standardized readmission rate above the 99.8% limit and 11 hospitals above the 95% limit. For the third period, 7 hospitals had a standardized readmission rate above the 99.8% limit and 6 hospitals above the 95% limit.

CONCLUSION

Readmissions to hospital 30 days after major lung resection for cancer in France declined little during these three periods. Measures to prevent readmissions should be introduced.

prognostic evaluation of patients benefiting from a trans aortic valve replacement according to the type of aortic stenosis

Funding Acknowledgements

Type of funding sources: None.

Introduction

Aortic Stenosis (AS) is a common condition in patients over 75 years.  Latest ESC recommendations differentiate 4 types of AS according to: Indexed Stroke Volume (SVi), mean gradient and left ventricular ejection fraction (LVEF). The aim of our study is to evaluate prognosis of patients who have had a transcatheter aortic valve replacement (TAVR), in terms of mortality, according  to the 4 types of AS.

Methods

This study compares prognosis of 620 patients who had TAVR between January 1, 2015 and December 31, 2018. Patients were classified into 4 groups according to AS type: high gradient; low gradient, low flow, low LVEF; low gradient, low flow, normal LVEF; low gradient, normal flow.

Results

69 patients (11.1%) died within 12 months of the procedure: 49 in the high gradient group (9.4%); 13 in the low gradient, low flow, low LVEF group (47.1%); 1 in the low gradient, low flow, normal LVEF group (5%); 6 in the low gradient, normal flow, normal LVEF group (18.2%). All-cause mortality at one year follow-up is higher in low-gradient, low-flow, altered LVEF group (p = 0.0004) than in other groups. Patients in this group were significantly more often admitted for heart failure than patients in high-gradient group (p = 0.009).

Conclusion

A complete echocardiography evaluation is needed to evaluate AS, its severity and type. Patients in the low gradient, low flow, low LVEF group have an independent risk of mortality at 12 months higher than other groups and are more hospitalized than patients in the high gradient group.

Multicenter Validation of the Revised Assessment of Bleeding and Transfusion (RABT) Score for Predicting Massive Transfusion

BACKGROUND

Massive transfusion (MT) is a lifesaving treatment for hemorrhaging patients. Predicting the need for MT is crucial to improve survival. The aim of our study was to validate the Revised Assessment of Bleeding and Transfusion (RABT) score to predict MT in a multicenter cohort of trauma patients.

METHODS

We performed a (2015-2017) analysis of adult (age ≥ 18 year) trauma patients who had a high-level trauma team activation at three Level I trauma centers. The RABT was calculated using the 4-point score [blunt (0)/penetrating trauma (1), shock index ≥ 1 (1), pelvic fracture (1), and FAST positive (1)]. A RABT score of ≥ 2 was used to predict MT (≥ 10 units of packed red blood cells within 24 h). The area under the receiver operating characteristic curve (AUROC) was calculated to assess the score's predictive power compared to the Assessment of Blood Consumption (ABC) score.

RESULTS

We analyzed 1018 patients: 216 (facility I), 363 (facility II), and 439 (facility III). The mean age was 41 ± 19 year, and the injury severity score (ISS) was 29 [22-36]. The overall MT rate was 19%. The overall AUROC of RABT ≥ 2 was 0.89. The sensitivity of the RABT ≥ 2 was 78%, and the specificity was 91%. The RABT score had a higher sensitivity (78% vs. 69%) and specificity (91% vs. 82%) than the ABC score.

CONCLUSION

The RABT score is a valid tool to predict MT in severely injured trauma patients. It is an objective score that aids clinicians in predicting the need for MT to mobilize blood products and minimize the waste of resources.

Equity on the frontlines of trauma surgery: An #EAST4ALL roundtable

BACKGROUND

Inequity exists in surgical training and the workplace. The Eastern Association for the Surgery of Trauma (EAST) Equity, Quality, and Inclusion in Trauma Surgery Ad Hoc Task Force (EAST4ALL) sought to raise awareness and provide resources to combat these inequities.

METHODS

A study was conducted of EAST members to ascertain areas of inequity and lack of inclusion. Specific problems and barriers were identified that hindered inclusion. Toolkits were developed as resources for individuals and institutions to address and overcome these barriers.

RESULTS

Four key areas were identified: (1) harassment and discrimination, (2) gender pay gap or parity, (3) implicit bias and microaggressions, and (4) call-out culture. A diverse panel of seven surgeons with experience in overcoming these barriers either on a personal level or as a chief or chair of surgery was formed. Four scenarios based on these key areas were proposed to the panelists, who then modeled responses as allies.

CONCLUSION

Despite perceived progress in addressing discrimination and inequity, residents and faculty continue to encounter barriers at the workplace at levels today similar to those decades ago. Action is needed to address inequities and lack of inclusion in acute care surgery. The EAST is working on fostering a culture that minimizes bias and recognizes and addresses systemic inequities, and has provided toolkits to support these goals. Together, we can create a better future for all of us.

Altitude healing effect in severe asthmatic children

BACKGROUND

The beneficial effect of a climatic treatment in children with asthma was established quite some time ago, but the mechanism of this beneficial effect has not been fully elucidated. We investigated the role of the cytokines of the TH2 pathway, reactive oxygen species (ROS) and reactive nitrogen species (RNS) over the course of a high-altitude climatic therapy.

METHODS

A group of 67 children originating from various French towns suffering from uncontrolled severe asthma was sent via their medical specialists, to the Briançon climatic area. They were monitored over the course of an entire school year. During this time, they returned home for 15 days during the Christmas holidays. At each stage, assessment of asthma control, lung function examination (peak flow meter and spirometry), and measurement of exhaled NO, ROS and RNS in exhaled breath condensate (EBC), and the level of cytokines in the plasma of the TH2 pathway were carried out.

RESULTS

The degree of asthma control improved at high altitude and worsened upon returning home. The average value of the peak expiratory flow also improved during the first 3 months but then worsened upon returning home, while the other spirometric parameters did not change. The level of expired NO and the scores for quality of life underwent a similar change. The level of RNS and ROS in the EBC did not change significantly. Besides, a marked and statistically significant decrease in the level of IL-13 and IL-10 was noted.

CONCLUSION

The beneficial effect of a climatic stay of children suffering from allergic asthma at altitude appears to be linked with less allergenic stimulation.

Impact of the timing of coronary revascularization relative to the transcatheter aortic valve implantation procedure: insights from a propensity score analysis based on a nationwide analysis

Background

The significance and the management of coronary artery disease (CAD) are disputed in patients treated by transcatheter aortic valve implantation (TAVI). In the presence of a significant CAD eligible for percutaneous coronary intervention (PCI), the issue of the timing of PCI relative to TAVI is unsettled. To answer this question, the present study aimed at comparing the short-term and long-term outcome in patients treated by staged PCI within a 90-day time interval before or after TAVI.

Methods

Based on the French administrative hospital-discharge database, the study collected information for all consecutive patients treated with TAVI between 2014 and 2018. Patients treated with PCI in the preceding 90 days before the TAVI procedure (pre-TAVI PCI) or subsequent 90 days after the TAVI procedure (post-TAVI PCI) were included. All-cause mortality, cardiovascular mortality, stroke, myocardial infarction and a combined cardiovascular endpoint were assessed at 30 days after the last procedure (short-term) and during the whole follow-up (long-term). Propensity score matching was used for the analysis of outcomes.

Results

8613 patients met the inclusion criteria with a vast majority of pre-TAVI PCI patients (N=8324) as opposed to post-TAVI PCI (N=229). After propensity score matching, 2 groups of 227 patients with comparable characteristics were obtained. At 30 days, no significant difference was observed for any of the outcome tested with the exception of myocardial infarction more frequent in post-TAVI PCI (OR 2.43 [1.17–5.07]). After a mean [SD] follow-up of 459 [569] days, all outcomes were identical between subgroups. The figure below illustrates the Kaplan Meier curve for all-cause mortality.

Conclusions

Our study based on a French nationwide database shows that PCI is performed pre-TAVI in a majority of cases, with no significant impact on outcome. Deferring PCI after TAVI seems safe and may provide an opportunity to make the decision on more objective parameters while the stenosis has been removed (such as FFR or IFR). In any case, the timing of PCI relative to TAVI does not seem to represent a concern and should be decided on an individual basis.

Figure 1

Funding Acknowledgement

Type of funding source: None

Development of a claims-based EuroSCORE II in patients with aortic stenosis needing surgical or transcatheter aortic valve replacement using electronic hospital records: a nationwide study

Background

Prediction of operative risk in patients with aortic stenosis (AS) undergoing surgical aortic valve replacement (SAVR) or transcatheter aortic valve implantation (TAVI) remains a challenge, particularly in high-risk patients. The EuroSCORE II is now commonly used to improve risk prediction. Large analyses from administrative database have provided opportunities for conducting health research in the field of structural heart disease interventions but may have a lack of granularity and do not routinely include EuroSCORE II, which may result in a risk of uncontrolled biases. We sought to approximate the EuroSCORE II using only administrative claims data to enable the operative risk to be assessed without clinical or paraclinical performance measures.

Methods

Based on the administrative hospital-discharge database, we collected information for all patients with AS treated with SAVR or TAVI between 2010 and 2019 in France. A total of 78,085 SAVR and 60,821 patients with AS treated with transcatheter aortic valve replacement (TAVR) were found in the database. For each patient, the EuroSCORE II was estimated using the formulas available at the EuroSCORE website. Age, gender, extracardiac arteriopathy, poor mobility, previous cardiac surgery, chronic lung disease, active endocarditis, diabetes on insulin, recent MI, dialysis are items available in the PMSI database using the ICD-10 or CCAM codes. For renal impairment, NYHA class, LVEF, pulmonary hypertension, “critical preoperative state” and urgent intervention, different proxies were built based on ICD-10 codes likely to represent increasing severity of these items.

Results

In the cohort of patients with SAVR, mean estimated EuroSCORE II was 3.3±1.1 while all-cause death at day 30 after SAVR was 3.8%. In the cohort of patients with TAVI, mean estimated EuroSCORE II was 3.8±1.0 while all-cause death at day 30 after TAVI was 5.5%. In the whole cohort, the area under the curve (AUC) of the estimated EuroSCORE II for predicting the risk of all-cause death at day 30 was 0.72 (95% CI 0.71–0.73) and was higher in patients treated with SAVR (AUC 0.76, 95% CI 0.75–0.77) than in those treated with TAVI (AUC 0.67, 95% CI 0.65–0.68, p&lt;0.00001 for DeLong test). The observed versus predicted risks of all-cause death at day 30 post-TAVI OR SAVR within risk deciles are shown in Figure 1. Calibration of the prediction score was satisfying across the 10 deciles and a predicted 30-day mortality rate of approximately 15%.

Conclusions

Claims data alone can be used to identify individuals with AS at operative risk when they are considered for SAVR or TAVI. The Claims-based EuroSCORE II might be used in research with large datasets for confounding adjustment or risk prediction. It provides hospitals and health systems with a low-cost, systematic way to identify a group of patients who are at greater risk of adverse outcomes with these interventions and for whom a more specific approach might be useful.

Figure 1

Funding Acknowledgement

Type of funding source: None

ACGME Operative Case Log Accuracy Varies Among Surgical Programs

OBJECTIVE

This study evaluates the accuracy of reported the Accreditation Council for Graduate Medical Education (ACGME) operative case logs from graduated residents compared to institutional operating room electronic records (ORER). We hope this will help guide review committees and institutions develop complete, accurate resident case logs.

DESIGN

This is a retrospective, cross-sectional study of general surgery (GS), neurosurgery (NS), and orthopedic surgery (OS) resident physicians. ACGME and ORER cases from 2009 to 2010 were analyzed and each case and current procedural terminology (CPT) code directly compared (ORER vs. ACGME).

SETTING

Single academic tertiary-care medical center (University of Kentucky, Lexington, KY).

PARTICIPANTS

Eleven thousand nine hundred and twenty-three cases for 46 residents among the 3 residency programs were analyzed.

RESULTS

There was an overall logging accuracy of 72% for ORER cases reflected in the ACGME case logs. OS residents had a higher rate of logging accuracy (OS 91%, GS 69%, NS 58%, chi-square p = 0.014) and mean annual number of cases compared to the other 2 programs (OS 452, GS 183, NS 237, ANOVA p = 0.001). NS residents had higher accuracy of CPT codes than post-graduate years 2 to 5 in other programs (p < 0.017). There was a strong positive correlation between the number of cases completed per resident and case logging accuracy, (rho = 0.769, p < 0.001) consistent for NS and GS, but not OS.

CONCLUSIONS

This study shows only 72% of a residents' operative experience is captured in the ACGME case log across 3 surgical programs. There is significant variability among surgical programs and among post-graduate year cohorts regarding case log and CPT code accuracy. There is a strong correlation with the total number of cases performed and increasing case log accuracy. Low case log accuracy may reflect individual resident behavior instead of program operative exposure. Further studies are needed to determine if ORER may serve as a more complete assessment of the operative experience of a resident and program.

Reducing Inappropriate Overutilization of the Massive Transfusion Protocol

Introduction/Objective

Massive transfusion protocols (MTPs) make it possible to deliver blood products to exsanguinating patients in an efficient, sustained, and immediate manner. However, overutilization of MTPs continues to remain a significant problem for hospital blood banks. The study aims to address the characteristics of possibly inappropriate MTP activations during the first phase (cooler) at a level 1 trauma academic medical center.

Methods

This was a retrospective review of 328 phase 1 MTPs out of 696 total MTPs performed during a two-year period (Jan 1, 2017 and Dec 31, 2018) and divided into three categories: trauma, non-trauma surgery, and medicine services. We assumed that a possibly inappropriate MTP for trauma cases would show an Assessment of Blood Component (ABC) score of 1 or less and physicians used clinical discretion. For possibly inappropriate MTP non- trauma surgical and medicine cases, we devised a new system where we looked at only whether the blood pressure was equal to or less than 90 mm Hg and/or the pulse was greater than or equal to 120 beats per minute. If there was a score of 0 where there were neither vital sign criteria, then the MTP was considered possibly inappropriate.

Results

For trauma service, there were 43/168 (25.6%) cases that had an ABC score of 0, 49/168 (29.2%) cases that had an ABC score of 1, 53/168 (31.5%) cases that had an ABC score of 2, 21/168 (12.5%) cases that had an ABC score of 3, and only 2/168 (1.2%) case that had an ABC score of 4. Non-trauma surgery service had 31/51 (60.8%) cases with a new score of 0, 20/51 (39.2%) cases with a new score of 1, and 0/51 (0%) cases with a new score of 2. Medicine services had 57/109 (52.3%) patients with a new score of 0, 47/109 (43.1%) patients with a new score of 1, and 5/109 (4.6%) patients with a new score of 2. Non-trauma surgery service had the greatest possibly inappropriate MTP activations [31/51 cases (60.8%)], followed by trauma [92/168 (54.8%) cases] and medicine [57/109 (52.3%) cases].

Conclusion

Our study shows greater overutilization with MTPs using clinical judgment than with using the ABC criteria. Non-trauma surgery service had the greatest number of possibly inappropriate MTP activations at our hospital without having a significantly abnormal pulse or blood pressure. While ABC criteria is already liberal for activating an MTP, physician discretion appears to be more liberal in activating a possibly inappropriate MTP.

[Psychometric validation of an Assessment Questionnaire on the Perception of and Adaptation to Visual Handicap in Adults (QUEPAHVA). French translation of the article]

PURPOSE

Handicap evaluation in adults with acquired or progressive congenital visual loss allows for identification of the individual's specific needs and targeted therapy (medical, technical, rehabilitative and psychological). Currently, the subjective dimension of the handicap remains poorly explored in the field of visual loss. Our questionnaire aims to understand the whole of these subjective impacts. It differs from existing quality of life scales in ophthalmology in its approach centered on the process of adaptation, individual resources (technical, cognitive, psychic and environmental), and investigation of the perception of the handicap. The goal of the present study is to validate this questionnaire, which could be used in any adult with a visual handicap, regardless of the extent of the visual loss, its etiology, or the type of treatment or compensatory mechanisms.

MATERIALS AND METHODS

The Assessment Questionnaire on the Perception of and Adaptation to Visual Handicap in Adults (QUEPAHVA) is composed of 28 items relating to perception of the visual impairment, its impact, and adaptive resources. They are divided into 3 sub-categories: perception of daily life and relationships (10 items), Perception of visual status and compensatory mechanisms (8 items), and Psychological impact of the visual handicap (10 items). The responses are graded on a Likert scale. Factor analysis and verification of psychometric qualities were performed based on the responses of 446 subjects. The discriminatory validity of the NEI-VFQ 25 was proven with 99 subjects. Reliability over time (mean interval between T1 and T2=49.43 days) was measured in 31 subjects. Sensitivity to change between pre- and post-management (mean interval between T1 and T2=410 days) was tested in 123 subjects.

RESULTS

Internal consistency was very good for the global scale (α=.90) as well as for the 3 sub-dimensions (α=.86; α=.79; α=.80). The discriminatory validity was satisfactory (r=.70). This result had to be interpreted as a function of the qualitative specificity of the questionnaire. The questionnaire enjoyed good reproducibility over time with regard to its total score and relatively satisfactory reproducibility with regard to its sub-dimensions. Sensitivity to change was very high and accounted for adaptations to the disability over time.

CONCLUSION

The QUEPAHVA displays good psychometric qualities. It constitutes a new means of evaluation. Its potential applications are many. It permits evaluation of the needs of the individual and adaptation of the protocol of care. Its use in institutions may support a step forward in the science of evaluation and continued improvement in quality of care.

Psychometric validation of an Assessment Questionnaire on the Perception of and Adaptation to Visual Handicap in Adults (QUEPAHVA)

PURPOSE

Handicap evaluation in adults with acquired or progressive congenital visual loss allows for identification of the individual's specific needs and targeted therapy (medical, technical, rehabilitative and psychological). Currently, the subjective dimension of the handicap remains poorly explored in the field of visual loss. Our questionnaire aims to understand the whole of these subjective impacts. It differs from existing quality of life scales in ophthalmology in its approach centered on the process of adaptation, individual resources (technical, cognitive, psychic and environmental), and investigation of the perception of the handicap. The goal of the present study is to validate this questionnaire, which could be used in any adult with a visual handicap, regardless of the extent of the visual loss, its etiology, or the type of treatment or compensatory mechanisms.

MATERIALS AND METHODS

The Assessment Questionnaire on the Perception of and Adaptation to Visual Handicap in Adults (QUEPAHVA) is composed of 28 items relating to perception of the visual impairment, its impact, and adaptive resources. They are divided into 3 sub-categories: Perception of daily life and relationships (10 items), Perception of visual status and compensatory mechanisms (8 items), and Psychological impact of the visual handicap (10 items). The responses are graded on a Likert scale. Factor analysis and verification of psychometric qualities were performed based on the responses of 446 subjects. The discriminatory validity of the NEI-VFQ 25 was proven with 99 subjects. Reliability over time (mean interval between T1 and T2=49.43 days) was measured in 31 subjects. Sensitivity to change between pre- and post-management (mean interval between T1 and T2=410 days) was tested in 123 subjects.

RESULTS

Internal consistency was very good for the global scale (α=.90) as well as for the 3 sub-dimensions (α=.86; α=.79; α=.80). The discriminatory validity was satisfactory (r=.70). This result had to be interpreted as a function of the qualitative specificity of the questionnaire. The questionnaire enjoyed good reproducibility over time with regard to its total score and relatively satisfactory reproducibility with regard to its sub-dimensions. Sensitivity to change was very high and accounted for adaptations to the disability over time.

CONCLUSION

The QUEPAHVA displays good psychometric qualities. It constitutes a new means of evaluation. Its potential applications are many. It permits evaluation of the needs of the individual and adaptation of the protocol of care. Its use in institutions may support a step forward in the science of evaluation and continued improvement in quality of care.

Estimating the Impact of Necrotizing Soft Tissue Infections in the United States: Incidence and Re-Admissions

Background: Previous estimates of the incidence of necrotizing soft tissue infections (NSTI) in the United States have substantial limitations and underestimate its occurrence. Improvements in hospital mortality after NSTI have increased the number of survivors at risk for long-term sequelae. This study estimates the incidence of NSTI and the burden of re-admission and associated healthcare spending in patients who survived admission for NSTI. Methods: Index admissions for NSTI were identified using International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes combined with either Current Procedural Technology (CPT) or diagnosis-related group codes to increase specificity. Two separate datasets were used to provide primary and secondary estimates of the annual incidence of NSTIs in the United States: the National Inpatient Sample (NIS) for the years 2012-2016 and the Watson Health dataset for 2009-2013, respectively, and extrapolated to estimate the incidence for 2018. The Nationwide Readmissions Database (NRD) from 2013-2015 was used to estimate of the risk for re-admission, cost of re-admissions, and to compare 90-day re-admission rates for NSTI to common medical conditions. Results: National Inpatient Sample and Watson Health datasets demonstrated an increasing annual incidence and estimated 33,600 and 28,500 cases in 2018, respectively. The estimated annual incidences in the United States in 2018 were 10.3 and 8.7 per 100,000 persons, respectively. Risk of 90-day re-admission ranged from 24%-29% over the 3 years, 89% of which were unplanned. Of those re-admitted, 90% had one or more comorbidities, the most common diagnoses associated with re-admission were infection in 65%, acute kidney injury in 22%, and shock in 10%. The median re-admission length of stay was seven days (interquartile range [IQR]: 4-13 days) with a median cost of re-admission of $13,590 (IQR: $7186-$27440). Conclusion: The incidence of NSTI is more common than generally reported. Re-admission within 90 days is common, occurring in more than one in four survivors resulting in high healthcare costs.

Can opioid vigilance and patient-centered care coexist? A qualitative study of communicative tensions encountered by surgical trainees

OBJECTIVE

The American health care system's adoption of the patient-centered care (PCC) model has transformed how medical pro-viders communicate with patients about prescription pain medication. Concomitantly, the nation's opioid epidemic has necessitated a proactive response from the medical profession, requiring providers who frequently dispense opioids for acute pain to exercise vigi-lance in monitoring and limiting outpatient prescriptions. This qualitative study explores how surgical trainees balance PCC directives, including shared decision making, exchanging information with patients, and relationship maintenance, with opioid prescribing vigi-lance.

DESIGN

Investigators conducted interviews with 17 surgical residents and fellows (trainees) who routinely prescribe opioids at an ac-ademic medical center.

RESULTS

A qualitative descriptive analysis produced four codes, which were reduced to themes depicting problematic intersections between PCC imperatives and opioid vigilance during post-operative opioid-prescribing communication: (a) sharing the deci-sion-making process contended with exerting medical authority, (b) reciprocating information contended with negotiating opioid prescribing terms with patients, (c) maintaining symbiotic relationships contended with prescribing ethics, and (d) achieving patient satisfaction contended with safeguarding opioid medications.

CONCLUSION

Surgical training programs must supply trainees with post-surgical prescribing guidelines and communication skills training. Training should emphasize how PCC directives may work in tandem with-not in opposition to-opioid vigilance.

[Gout]

Gout is a chronic disease due to the deposition of monosodium urate microcrystals in joints and tissues. Its incidence and prevalence are increasing worldwide in close relation with the epidemic of obesity and metabolic syndrome. Gout is related to chronic hyperuricemia that should be treated to ensure the reduction or even the disappearance of acute attacks ("gout flares") and to reduce the size and number of tophi. If arthritis of the first metatarsophalangeal joint is the most typical form, other joints may be affected, including the spine. Demonstration of urate microcrystals arthritis allows diagnosis of gout but, in the absence of possibility of performing joint puncture, imaging may be useful for providing complementary diagnostic elements. Appropriate care is essential to reduce the number of flares and the evolution towards gouty arthropathy but also in terms of public health in order to reduce costs related to this pathology.

Exploring Family Decisions to Refuse Organ Donation at Imminent Death

Communication about organ donation at the time of imminent death is a meaningful, yet less understood, area of health communication. We employed a multiple goals framework to explore family normative perceptions of organ donation and the conversational goal tensions experienced during a family member's imminent death. Semi-structured interviews were conducted with 14 family members who refused to donate when approached by an organ procurement coordinator (OPC) upon the imminent death of a family member. Thematic analysis revealed that family members described their decisions to refuse donation as (a) last acts of love, (b) responses to unnecessary requests, and (c) consistent with the known beliefs of the patient. Participants described several goal tensions operating within the organ donation conversation itself, including (a) the management of frequent requests, (b) pressure to donate, and (c) enduring unwanted requests from the OPC. Communication goals frameworks offer practical insights for improving organ-related conversations.

Transfusion rates in emergency general surgery: high but modifiable

BACKGROUND

Transfusion of red blood cells (RBC) increases morbidity and mortality, and emergency general surgery (EGS) cases have increased risk for transfusion and complication given case complexity and patient acuity. Transfusion reduction strategies and blood-conservation technology have been developed to decrease transfusions. This study explores whether transfusion rates in EGS have decreased as these new strategies have been implemented.

METHODS

This is a retrospective review of the American College of Surgeons' National Surgical Quality Improvement Program (ACS NSQIP) data from three academic medical centers. Operations performed by general surgeons on adults (aged ≥18 years) were selected. Data were analyzed from two periods: 2011-2013 and 2014-2016. Cases were grouped by the first four digits of the primary procedure Current Procedural Terminology code. Transfusion was defined as any RBC transfusion during or within 72 hours following the operation. Composite morbidity was defined as any NSQIP complication within 30 days following the operation.

RESULTS

Overall general surgery transfusion rates decreased from 6.4% to 4.8% from period 1 to period 2 (emergent: 16.6%-11.5%; non-emergent 4.9%-3.7%; Fisher's exact p values <0.001). Among patients transfused, the number of units received decreased slightly (median 2 U (IQR 2-3) to median 2 U (IQR 1-3), Mann-Whitney U test p=0.005). Morbidity decreased (overall: 13.8%-12.3%, p=0.001; emergent: 26.3%-20.6%, p<0.001) while mortality did not change.

DISCUSSION

Rates of RBC transfusion decreased in both emergent and non-emergent cases. Efforts to reduce transfusion may have been successful in the EGS population. Morbidity improved over the time periods while mortality was unchanged.

LEVEL OF EVIDENCE

Level III.

Incidence and outcomes of infective endocarditis after transcatheter aortic valve implantation versus surgical aortic valve replacement

OBJECTIVES

Transcatheter aortic valve implantation (TAVI) is an alternative to surgical aortic valve replacement (AVR) in aortic stenosis (AS). Infective endocarditis (IE) in patients with prosthetic heart valves is associated with significant morbidity and mortality. Data on the incidence, risk factors, and outcomes of IE after TAVI are conflicting. We evaluated these issues in patients with percutaneous TAVI vs. isolated surgical AVR (SAVR) at a nationwide level.

METHODS

Based on the administrative hospital discharge database, the study collected information for all patients with aortic stenosis treated with AVR in France between 2010 and 2018.

RESULTS

A total of 47 553 patients undergoing TAVI and 60 253 patients undergoing isolated SAVR were identified. During a mean follow-up of 2.0 years (median (25th to 75th percentile) 1.2 (0.1-3.4) years), the incidence rates of IE were 1.89 (95% confidence interval (CI) 1.78-2.00) and 1.40 (95% CI 1.34-1.46) events per 100 person-years in unmatched TAVI and SAVR patients, respectively. In 32 582 propensity-matched patients (16 291 with TAVI and 16 291 with SAVR), risk of IE was not different in patients treated with TAVI vs. SAVR (incidence rates of IE 1.86 (95% CI 1.70-2.04) %/year vs 1.71 (95% CI 1.58-1.85) %/year respectively, relative risk (RR) 1.09, 95% CI 0.96-1.23). In these matched patients, total mortality was higher in TAVI patients with IE (43.0% 95% CI 37.3-49.3) than in SAVR patients with IE (32.8% 95% CI 28.6-37.3; RR 1.32, 95% CI 1.08-1.60).

DISCUSSION

In a nationwide cohort of patients with AS, treatment with TAVI was associated with a risk of IE similar to that following SAVR. Mortality was higher for patients with IE following TAVI than for those with IE following SAVR.

4070Clinical impact of mitral regurgitation before or following transcatheter aortic valve replacement in patients with aortic stenosis: a nationwide multivariable analysis

Methods

Based on the French administrative hospital-discharge database, the study collected information for all consecutive patients with aortic stenosis treated with transfemoral TAVR in France between 2008 and 2018. Cox regression was used for the analysis of predictors of events during follow-up.

Results

A total of 47,872 patients with transfemoral TAVR were included in the analysis (mean age 83±7 years). Moderate/severe MR was present at baseline (MRb) in 9.5% of the patients. Few patients (1.6%) revealed moderate/severe MR post-TAVR (MRpt). Mean follow-up was 1.31±1.61 years. MRb was associated with an increased cardiovascular mortality (Hazard ratio 1.29, 95% CI 1.20–1.39) and total mortality (Hazard ratio 1.15, 95% CI 1.10–1.21). However, MRb was not an independent predictor in multivariable analysis, neither for cardiovascular mortality (adjusted HR 1.06, 95% CI 0.98–1.14) nor for total mortality (adjusted HR 1.01, 95% CI 0.96–1.07). MRpt was not a predictor of cardiovascular or total mortality. Older age, male sex, history of pulmonary edema/cardiogenic shock, atrial fibrillation, myocardial infarction, diabetes, renal failure, liver disease, pulmonary disease, previous cancer and anemia at baseline independently predicted mortality during follow-up. All of them (but history of cancer) were also independent predictor of cardiovascular death.

Conclusion

Baseline MR was associated with increased cardiovascular and totality mortality following TAVR but was not an independent predictor of any of them. By contrast, several other predictors of cardiovascular and total mortality were identified. This suggests that MR should not be directly considered to establish the strategy for TAVR decision or for avoiding TAVR-related futility.

P1794Futility risk model development and validation among patients with aortic stenosis treated with transcatheter aortic valve replacement

Methods

Based on the French administrative hospital-discharge database, the study collected information for all consecutive patients with aortic stenosis treated with transfemoral TAVR in France between 2008 and 2018. Multivariate logistic regression was used to select the risk factors of early all-cause death in first year after TAVR procedure (considered as futility) for the overall population. Score points were assigned to each risk factor using the β coefficient. Internal validation was performed by a bootstrap method. Calibration was assessed with the Hosmer-Lemeshow goodness of fit test and accuracy with the C-statistic.

Results

A total of 47,872 patients with transfemoral TAVR were included in the analysis (mean age 83±7 years). Mean follow-up was 1.31±1.61 years and 9,338 deaths were recorded (yearly rate 14.9%), among which 4,562 (49%) occurred in first year after TAVR procedure. The final logistic regression model included older age, male sex, history of hospital stay with heart failure, history of acute pulmonary oedema, atrial fibrillation, previous stroke, vascular disease, diabetes, renal disease, liver disease, pulmonary disease, anemia, history of cancer, metastasis and denutrition,. The area under the curve (AUC) for the score was 0.696 (95% CI 0.688–0.704). This score outperformed frailty index and Charlson comorbidity index for identifying futility. AUC was 0.677 (95% CI 0.669–0.86) for internal validation. The Hosmer–Lemeshow goodness of fit test had a p-value of 0.10 suggesting that the model was accurate. We further divided the model into 4 groups with 5%, 12%, 19% and 30% futility, respectively. The low-risk group consisted of 60% of the patients and the high-risk group consisted of 4% of these patients.

Conclusion

This futility prediction score established from a large nationwide cohort of patients treated with TAVR may provide a relevant insight for optimizing healthcare decision. It may facilitate identification of patients who, despite an apparently successful procedure, have risk of death that may outweigh the benefit of an anticipated TAVR.

Macroeconomic trends and practice models impacting acute care surgery

Acute care surgery (ACS) diagnoses are responsible for approximately a quarter of the costs of inpatient care in the US government, and individuals will be responsible for a larger share of the costs of this healthcare as the population ages. ACS as a specialty thus has the opportunity to meet a significant healthcare need, and by optimizing care delivery models do so in a way that improves both quality and value. ACS practice models that have maintained or added emergency general surgery (EGS) and even elective surgery have realized more operative case volume and surgeon satisfaction. However, vulnerabilities exist in the ACS model. Payer mix in a practice varies by geography and distribution of EGS, trauma, critical care, and elective surgery. Critical care codes constitute approximately 25% of all billing by acute care surgeons, so even small changes in reimbursement in critical care can have significant impact on professional revenue. Staffing an ACS practice can be challenging depending on reimbursement and due to uneven geographic distribution of available surgeons. Empowered by an understanding of economics, using team-oriented leadership inherent to trauma surgeons, and in partnership with healthcare organizations and regulatory bodies, ACS surgeons are positioned to significantly influence the future of healthcare in the USA.

Trauma Trainees' Multiple Competing Goals in Opioid Prescription Communication

Prescription opioids and heroin account for more than half of all drug overdose fatalities, costing an estimated 115 American lives every day. The ongoing opioid epidemic devastates communities and represents a tremendous burden to the national economy and health care system. In 2016, the Centers for Disease Control and Prevention and the White House Office of National Drug Control Policy proposed action to train prescribers on the proper dispensing of opioids, which are indispensable pharmacologic resources for treating acute pain resulting from a traumatic injury or surgery. Trauma surgeons who prescribe opioids for severe pain embark on patient consultations with multiple and conflicting goals respective to their roles as a healers of the suffering, regulators of illicit substances, members of a greater medical system working to contain an opioid epidemic, and moral beings with a distinct set of preferences, experiences, social norms, and practice philosophies. Semistructured interviews with 17 trauma and surgical residents and fellows at a southeastern academic medical center in the United States generated descriptive data regarding prescribing practices and patient communication. Guided by the multiple goals framework, the current research presents three prominent themes depicting the problematic convergence of identity, task, and relational goals during opioid-prescribing conversations between trauma trainees and their patients.

Wilderness Falls: An Analysis and Comparison of Rock Climbers and Nonclimbers

BACKGROUND

Wilderness travel and rock climbing are increasingly popular. Urban falls from height have been reported from trauma centers; however, there have been no trauma center reports of rock climbing or wilderness falls (WFs) in the United States. We sought to describe the injury pattern of WF and to determine whether rock climbers represent a distinct pattern of injury.

MATERIALS AND METHODS

The trauma database from our level 1 trauma center was queried from 1/1/06 to 12/31/16 for the diagnosis of "fall from cliff" (ICD9: e884.1, ICD10: w15.xx). Demographics, injury characteristics, and trauma center care were analyzed. Data were analyzed using two sample unequal variance T-tests, two sample Z-tests for proportions, and Fisher's exact tests.

RESULTS

One hundred fifty-one falls were analyzed (40 climbers, 111 nonclimbers). WF victims were predominantly male (79%), moderately injured (mean injury severity score = 13.2), frequently intoxicated (34%), and fell from an average of 43 feet (7-200 ft). The most frequent injures were soft tissue (55%), spine (50%), head (43%), lower extremity (38%), and chest (39%). Climbers were younger, more often sustained upper extremity and soft tissue injuries, more often flown from the scene, injured during daytime, and were better insured. Helmet use was rare (one climber and one nonclimber). There were 3 (2%) deaths, including one climber.

CONCLUSIONS

WFs have a distinct injury pattern and demographic and occur from a height greater than twice those reported in urban falls. Rock climbing falls involve another distinct demographic and pattern of injury. Injury prevention strategies may include helmet use and avoiding nighttime wilderness travel and drug/alcohol use.

Experience with uncrossmatched blood refrigerator in emergency department

Background

Uncrossmatched packed red blood cell (PRBC) transfusion is fundamental in resuscitation of hemorrhagic shock. Ready availability of uncrossmatched blood can be achieved by storing uncrossmatched blood in a blood bank refrigerator in the emergency department (ED), but could theoretically lead to inappropriate uncrossmatched use.

Methods

This retrospective study was performed at a level I trauma center from January 2013 to March 2014. Possibly inappropriate transfusion was defined as patients who received at least one unit of blood from the ED refrigerator and no more than two units of PRBC in the first 24 hours. Deaths within the first 24 hours were excluded. Patients who received blood from the ED refrigerator who received ≤2 units total in 24 hours were compared with those who received >2 units.

Results

158 adults received blood from the ED refrigerator. 140 (88.6%) were trauma patients. 37 (23.4%) received massive transfusion (MT). 42 (26.6%) deaths were excluded. 29 patients received ≤2 units and 87 received >2 units in the first 24  hours. The ≤2 units group had a higher systolic blood pressure (116  mm Hg vs. 102  mm Hg, p=0.042), lower base deficit (6.4 mEq/L vs. 9.4 mEq/L, p=0.032), higher hematocrit (34% vs. 30%, p=0.024), lower rate of MT protocol activation (27.6% vs. 58.6%, p=0.005), and lower rates of transfusion of fresh frozen plasma (17.2% vs. 54.0%, p=0.001) and platelets (13.8% vs. 39.1%, p=0.012). Appropriately transfused patients were more likely to have evidence of shock with active, non-compressible hemorrhage. Potentially inappropriate uses were more likely in patients either without evidence of hemorrhage or without signs of shock.

Discussion

Storing uncrossmatched blood in the ED is an effective way to get PRBCs transfused quickly in hemorrhaging patients and is associated with a low rate of unnecessary uncrossmatched transfusion. Provider education and good clinical judgment are imperative to prevent unnecessary use.

Level of evidence

Level III, therapeutic.