Injury severity in polytrauma patients is underestimated using the injury severity score: a single-center correlation study in air rescue

Development and validation of a model to predict the need for artificial airways for acute trauma patients in the emergency department: a retrospective case-control study

OBJECTIVE

To develop scores for predicting the need for artificial airway procedures for acute trauma patients in the emergency department (ED).

DESIGN

Retrospective case-control.

SETTING

A tertiary comprehensive hospital in China.

PARTICIPANTS

8288 trauma patients admitted to the ED within 24 hours of injury and who were admitted from 1 August 2012 to 31 July 2020.

PRIMARY AND SECONDARY OUTCOME MEASURES

The study outcome was the establishment of an artificial airway within 24 hours of admission to the ED. Based on the different feature compositions, two scores were developed in the development cohort by multivariable logistic regression. The predictive performance was assessed in the validation cohort.

RESULTS

The O-SPACER (Oxygen saturation, Systolic blood pressure, Pulse rate, Age, Coma Scale, Eye response, Respiratory rate) score was developed based on the patient's basic information with an area under the curve (AUC) of 0.85 (95% CI 0.80 to 0.89) in the validation group. Based on the basic information and trauma scores, the IO-SPACER (Injury Severity Score, Oxygen saturation, Systolic blood pressure, Pulse rate, Age, Coma Scale, Eye response, Respiratory rate) score was developed, with an AUC of 0.88 (95% CI 0.84 to 0.92). According to the O-SPACER and IO-SPACER scores, the patients were stratified into low, medium and high-risk groups. According to these two scores, the high-risk patients were associated with an increased demand for artificial airways, with an OR of 40.16-40.67 compared with the low-risk patients.

CONCLUSIONS

The O-SPACER score provides risk stratification for injured patients requiring urgent airway intervention in the ED and may be useful in guiding initial management. The IO-SPACER score may assist in further determining whether the patient needs planned intubation or tracheotomy early after trauma.

Unintentional Injuries Among Young Adolescents at a Level-One Trauma Center in Saudi Arabia: A Cross-Sectional Study

Background Unintentional injuries are the leading preventable cause of mortality across different demographics. This study aims to assess the prevalence, severity, contributing factors, and clinical outcomes of unintentional injuries among adolescent patients. Methods A retrospective study was conducted using the charts of patients admitted with unintentional injuries (motor vehicle accidents (MVA), falls, pedestrian injuries, burns, etc.) to the emergency department (ED) from January 2016 to December 2018 at a level-one trauma center in Riyadh, Saudi Arabia. A total of 721 patients' charts were reviewed, but only 52 patients were consecutively included as per the definition of an adolescent. All variables, including severity and outcome, were assessed. Results The overall prevalence of unintentional injuries was 7.2 per 100 adolescent patients. The most common cause of unintentional injury were MVAs, which were reported in 35 (71%), with head and neck region injuries among 38 (73%) patients. The overall mortality was noted at 10 per 52 (19%) patients. The mean Injury Severity Score (ISS) score was 17.81±12.76. The patients who stayed longer in the ED were not associated with pelvic and lower extremity injuries, with a p-value=0.008. The ISS was the significant predictor of mortality, with an odds ratio (OR) of 1.6, a confidence interval (CI) of 1.02-2.65, and a p-value=0.04. Conclusion MVAs were the main cause of unintentional injuries among adolescents. Future recommendation plans for adolescents should include stricter implementation of road traffic laws to control this early, preventable death among adolescents.

Association of age and severe injury in young motorcycle riders: A cross-sectional study from Karachi, Pakistan

INTRODUCTION

The burden imposed by motorcyclist deaths and injuries is high in low- and middle-income countries. Many injured motorcycle riders in these settings are underage. The aim of this study was to assess the association between age and severe injury in young motorcycle riders.

METHODS

We analysed road traffic injury surveillance data from the emergency rooms of five hospitals in Karachi from 2007 to 2015. We used logistic regression to assess the association of motorcycle riders' age, categorised as underage (13-17 years), early licensing age (18-19 years) and late licensing age (20-24 years), with severe injury, defined as an Injury Severity Score (ISS) ≥ 16.

RESULTS

The study sample included 45,366 motorcycle riders. There were 10115 (22.3%) motorcycle riders aged 13-17 years, 9899 (21.8%) aged 18-19 years and 25352 (55.9%) aged 20-24 years. Almost all were male (99%). Being aged 13-17 years (adjusted odds ratio 1.25; 95% CI 1.11, 1.42) and 18-19 years (adjusted odds ratio 1.26; 95% CI 1.10, 1.43) were associated with higher odds of severe injury compared with being aged 20-24 years.

CONCLUSION

Motorcycle riders who presented to the hospital with injuries after road traffic crashes and were aged 13-17 years and 18-19 years had significantly higher odds of severe injury than those aged 20-24 years.

Association of White Blood Cell Subtypes and Derived Ratios with a Mortality Outcome in Adult Patients with Polytrauma

Background. After trauma, the subtypes of white blood cells (WBCs) in circulation and the derived neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), and platelet-to-lymphocyte ratio (PLR) may undergo relative changes and reflect the patients’ immune-inflammatory status and outcome. This retrospective study was designed to investigate the relationship between these variables and the mortality outcomes in adult patients with polytrauma, which is defined as an abbreviated injury scale (AIS) score ≥ 3 in two or more different body regions. Methods. A comparison of the expression of subtypes of WBCs, NLR, MLR, and PLR upon arrival to the emergency department was performed in selected propensity score-matched patient cohorts created from 479 adult patients with polytrauma between 1 January 2015 and 31 December 2019. A multivariate logistic regression analysis was used to identify the independent risk factors for mortality. Results. There were no significant differences in monocyte, neutrophil, and platelet counts, as well as in MLR, NLR, and PLR, between deceased (n = 118) and surviving (n = 361) patients. In the propensity score-matched patient cohorts, which showed no significant differences in sex, age, comorbidities, and injury severity, deceased patients had significantly higher lymphocyte counts than survivors (2214 ± 1372 vs. 1807 ± 1162 [106/L], respectively, p = 0.036). In addition, the multivariate logistic regression analysis revealed that the lymphocyte count (OR, 1.0; 95% confidence interval [CI], 1.00–1.06; p = 0.043) was a significant independent risk factor for mortality in these patients. Conclusions. This study revealed that there was no significant difference in the counts of monocytes, neutrophils, and platelets, as well as in MLR, NLR, and PLR, between deceased and surviving patients with polytrauma. However, a significantly higher lymphocyte count may be associated with a worse mortality.

Minimally invasive internal fixation for unstable pelvic ring fractures: a retrospective study of 27 cases

Background

This study aimed to evaluate the radiographic and clinical outcomes of anterior subcutaneous internal fixation (INFIX) with or without posterior fixation for the treatment of unstable pelvic fractures.

Methods

Intraoperative blood loss, operation time, and duration of hospital stay were recorded, and fracture union and postoperative complications were evaluated. The fracture reduction quality was evaluated using the Matta score, pelvic deformity index (PDI), and pubic symphyseal width (PSW). In addition, the functional recovery and general quality of life were evaluated using the Majeed score and the 12-Item Short-Form Survey (SF-12), respectively. Furthermore, sacral nerve injury was evaluated using the Gibbons classification.

Results

Twenty-seven patients (14 males and 13 females) with an average age of 37.4 years were followed up for a mean of 22 months. The average operation time, median intraoperative blood loss, and average duration of hospital stay were 129 ± 47 min, 100 mL, and 22 ± 13 days, respectively. All patients achieved bony union with an average union time of 13.3 weeks. Furthermore, the average PDI and PSW were 0.07 ± 0.04 vs. 0.04 ± 0.03 (P = 0.009) and 1.15 ± 1.36 vs. 0.54 ± 0.17 (P = 0.048) before and after the operation, respectively. In 78% of the patients, the Matta or Majeed scores were excellent or good. The SF-12 physical and mental health scores were 45.1 ± 10.2 and 53.2 ± 6.3, respectively. Furthermore, one superficial surgical site infection, one loosening of INFIX, one lateral femoral cutaneous nerve irritation, one femoral nerve injury, and two implant discomforts due to the bar were noted. Among five patients with sacral nerve injuries, four were asymptomatic, and one just had paresthesia at the last follow-up.

Conclusion

INFIX with or without sacroiliac screws can achieve satisfactory radiographic and functional outcomes in the treatment of unstable pelvic ring fractures.

Trial registration

ChiCTR2000038812. Registered 04 October 2020. Retrospectively registered.

Trauma Scores and Their Prognostic Value for the Outcome Following Pediatric Polytrauma

Purpose: The management and prognostic assessment of pediatric polytrauma patients can pose substantial challenges. Trauma scores developed for adults are not universally applicable in children. An accurate prediction of the severity of trauma and correct assessment of the necessity of surgical procedures are important for optimal treatment. Several trauma scores are currently available, but the advantages and drawbacks for use in pediatric patients are unclear. This study examines the value of the trauma scores Injury Severity Score (ISS), Pediatric Trauma Score (PTS), National Advisory Committee for Aeronautics (NACA), and Glasgow Coma Score (GCS) for the assessment of the polytraumatized child. Methods: In a retrospective study, 97 patients aged 0-17 years who presented with polytrauma and an ISS ≥16 in the trauma bay were included in the study. Patient records including radiological studies were analyzed. Pathological imaging findings and emergency surgery were assessed as outcome variables and the predictive value of the trauma scores were analyzed using receiver operator characteristic (ROC) curves. Statistical significance was set at an alpha level of P ≤ 0.05. Results: In this study, 35 of the 97 studied children had pathological cranial computed findings. These either underwent craniectomy or trepanation or a parenchymal catheter was placed for intracranial pressure monitoring. Abdominal trauma was present in 45 patients, 16 of which were treated surgically. Forty-three patients arrived with thoracic injuries, 10 of which received a thoracic drainage. One child underwent an emergency thoracotomy. Predictive accuracy for emergency surgery calculated using receiver-operator characteristic (ROC) curves was highest for ISS and NACA scores (0,732 and 0.683, respectively), and lower for GCS (0.246) and PTS (0.261). Conclusion: In our study cohort, initial ISS and NACA scores better predicted operative interventions and outcome than PTS or GCS for polytraumatized pediatric patients.

Impact of a streamlined trauma management approach and determinants of mortality among hemodynamically unstable patients with severe multiple injuries: a before-and-after retrospective cohort study

Background

Trauma management requires a multidisciplinary approach, but coordination of staff and procedures is challenging in patients with severe trauma. In October 2014, we implemented a streamlined trauma management system involving emergency physicians trained in severe trauma management, surgical techniques, and interventional radiology. We evaluated the impact of streamlined trauma management on patient management and outcomes (study 1) and evaluated determinants of mortality in patients with severe trauma (study 2).

Methods

We conducted a retrospective cohort study of 125 patients admitted between January 2011 and 2019 with severe trauma (Injury Severity Score ≥16) and persistent hypotension (≥2 systolic blood pressure measurements <90 mm Hg). Patients were divided into a Before cohort (January 2011 to September 2014) and an After cohort (October 2014 to January 2019) according to whether they were admitted before or after the new approach was implemented. The primary outcome was in-hospital mortality.

Results

Compared with the Before cohort (n=59), the After cohort (n=66) had a significantly lower in-hospital mortality (36.4% vs. 64.4%); required less time from hospital arrival to initiation of surgery/interventional radiology (median, 41.0 vs. 71.5 minutes); and was more likely to undergo resuscitative endovascular balloon occlusion of the aorta (24.2% vs. 6.8%). Plasma administration before initiating hemostasis (adjusted OR 1.49 (95% CI 1.04 to 2.14)), resuscitative endovascular balloon occlusion of the aorta (9.48 (95% CI 1.25 to 71.96)), and shorter time to initiation of surgery/interventional radiology (0.97 (95% CI 0.96 to 0.99)) were associated with significantly lower mortality.

Discussion

Implementing a streamlined trauma management protocol improved outcomes among hemodynamically unstable patients with severe multiple trauma.

Level of evidence

Level III.