Systematic review and need assessment of pediatric trauma outcome benchmarking tools for low-resource settings

Pediatric Blunt Splenic Trauma: Disparities in Management and Outcomes

INTRODUCTION

While nonoperative management has become widely accepted, whether nonoperative management of blunt splenic trauma is standardized across pediatric trauma centers and different racial groups warrants further investigation. Using the National Trauma Database, the purpose of this study was to quantify the differences in the management of pediatric splenic trauma across different pediatric trauma centers, with respect to injury severity, race, ethnicity, and insurance.

METHODS

Patients under 20 y of age with blunt splenic trauma reported to the 2018 and 2019 National Trauma Data Bank were identified. Primary outcomes were splenectomy, embolization, transfusion, mortality, injury severity score (ISS), and length of hospital stay (LOS) and length of intensive care unit stay. Continuous data and categorical data were analyzed using ANOVA and Chi-squared test, respectively. Nearest 1:1 neighbor matching was performed between minority patients and White patients. P < 0.05 for all comparative analyses was considered statistically significant.

RESULTS

Of the total cohort (n = 1919), 70.3% identified as White, while 21.6% identified as Black or Hispanic. The mortality rate was 0.3%. Among different race categories, the frequency of spleen embolization (P = 0.99), splenectomy (P = 0.99), blood transfusion (P = 1), and mortality (P = 1), were not significantly different. After controlling for ISS and age with propensity score matching, the mean hospital LOS remained significantly higher in minority patients, with a mean of 5.44 d compared to 4.72 d (P = 0.05). Mean length of intensive care unit stay was not significantly different after propensity matching, with a mean of 1.79 d and 1.56 spent in the ICU for minority and White patients respectively (P = 0.17). While propensity score matching preserved statistical significance, the ISS for the minority group remained 1.12 times higher than the ISS of the Caucasian group. There was no statistically significant difference among races with respect to different payment methods and insurance status, although Black and Hispanic patients were proportionally underinsured.

CONCLUSIONS

While minority patients had a relatively higher number of operative interventions and longer hospital and ICU stays, after propensity score matching, mean ISS remained higher in the minority group. Our findings suggest that injury severity is likely to influence the difference in LOS between the two groups. Furthermore, our data highlight how nonoperative management is not standardized across pediatric trauma centers.

Met and Unmet Need for Pediatric Surgical Access in Uganda: A Country-Wide Prospective Analysis

INTRODUCTION

Children's surgical access in low and low-middle income countries is severely limited. Investigations detailing met and unmet surgical access are necessary to inform appropriate resource allocation.

MATERIALS AND METHODS

Surgical volume, outcomes, and distribution of pediatric general surgical procedures were analyzed using prospective pediatric surgical databases from four separate regional hospitals in Uganda. The current averted burden of surgical disease through pediatric surgical delivery in Uganda and the unmet surgical need based on estimates from high-income country data was calculated.

RESULTS

A total of 8514 patients were treated at the four hospitals over a 6-year period corresponding to 1350 pediatric surgical cases per year in Uganda or six surgical cases per 100,000 children per year. The majority of complex congenital anomalies and surgical oncology cases were performed at Mulago and Mbarara Hospitals, which have dedicated pediatric surgical teams (P < 0.0001). The averted burden of pediatric surgical disease was 27,000 disability adjusted life years per year, which resulted in an economic benefit of approximately 23 million USD per year. However, the average case volume performed at the four regional hospitals currently represents 1% of the total projected pediatric surgical need.

CONCLUSIONS

This investigation is one of the first to demonstrate the distribution of pediatric surgical procedures at a country level through the use of a prospective locally created database. Significant disease burden was averted by local pediatric and adult surgical teams, demonstrating the economic benefit of pediatric surgical care delivery. These findings support several ongoing strategies to increase pediatric surgical access in Uganda.

Validation of the Pediatric Resuscitation and Trauma Outcome (PRESTO) model in injury patients in Tanzania

INTRODUCTION

Sub-Saharan Africa has the highest rate of unintentional paediatric injury deaths. The Pediatric Resuscitation and Trauma Outcome (PRESTO) model predicts mortality using patient variables available in low-resource settings: age, systolic blood pressure (SBP), heart rate (HR), oxygen saturation, need for supplemental oxygen (SO) and neurologic status (Alert Verbal Painful Unresponsive (AVPU)). We sought to validate and assess the prognostic performance of PRESTO for paediatric injury patients at a tertiary referral hospital in Northern Tanzania.

METHODS

This is a cross-sectional study from a prospective trauma registry from November 2020 to April 2022. We performed exploratory analysis of sociodemographic variables and developed a logistic regression model to predict mortality using R (V.4.1). The logistic regression model was evaluated using area under the receiver operating curve (AUC).

RESULTS

499 patients were enrolled with a median age of 7 years (IQR 3.41-11.18). 65% were boys, and in-hospital mortality was 7.1%. Most were classified as alert on AVPU Scale (n=326, 86%) and had normal SBP (n=351, 98%). Median HR was 107 (IQR 88.5-124). The logistic regression model based on the original PRESTO model revealed that AVPU, HR and SO were statistically significant to predict in-hospital mortality. The model fit to our population revealed AUC=0.81, sensitivity=0.71 and specificity=0.79.

CONCLUSION

This is the first validation of a model to predict mortality for paediatric injury patients in Tanzania. Despite the low number of participants, our results show good predictive potential. Further research with a larger injury population should be done to improve the model for our population, such as through calibration.

External validation of the PRESTO pediatric tool for predicting in-hospital mortality from traumatic injury

BACKGROUND

Benchmarking is crucial for quality improvement of trauma systems. The Pediatric Resuscitation and Trauma Outcome (PRESTO) model allows risk-adjusted comparisons of in-hospital mortality for pediatric trauma populations in under-resourced environments. Our aim was to validate PRESTO in a high-resource setting using provincial Trauma Registry (TR) data and compare it to the standard benchmarking model, the Injury Severity Score (ISS).

METHODS

This retrospective case-control study collected demographic, vital sign, and outcome data from the TR for patients aged <16 years sustaining major trauma from 2013 to 2021. The PRESTO model estimates predicted probability of in-hospital mortality (Pm) using the age, heart rate, blood pressure, oxygen saturation, neurological status, and use of airway supplementation. PRESTO was assessed by comparison of Pm in patients who died and survived and comparison of area under the receiver-operator curve (AUROC) with that of ISS. Statistical analysis was performed using R.

RESULTS

We included 647 patients, of which 69 died in-hospital (11%). The cohort was 37% female, with a median age of 8 and median ISS of 17. The median Pm for cases was significantly higher compared to controls (1.0 vs. 5.2 × 10^-5, p < 0.001). The AUROC for PRESTO and ISS were not significantly different (0.819 and 0.816, respectively; p = 0.95).

CONCLUSION

PRESTO is valid in a resource-rich environment, such as a Canadian province. It performs equally well to ISS but is simpler to derive. In the future, PRESTO may serve to benchmark levels of in-hospital mortality within or across institutions over time across Canada.

Performance of the Paediatric Trauma Score on survival prediction of injured children at a major trauma centre: A retrospective Colombian cohort, 2011-2019

Background

Despite improvements in children's health due to a reduction in infections, trauma continues to cause many deaths among adolescents. Strategies to mitigate morbidity and mortality from trauma include severity scores to classify and refer patients to the appropriate hospitals to provide better management; however, these strategies have not been assessed in Colombian children. This study aimed to describe the characteristics and outcomes of injured children and evaluate the performance of the Pediatric Trauma Score (PTS) in predicting survival at a major trauma centre in a Colombian city.

Methods

This was a retrospective cohort study of children aged <18 years who were treated for injuries at a hospital in Colombia. The primary outcome was 30-day mortality. A simple logistic regression model was used with PTS as the predictor variable and vital status at discharge as the outcome variable. PTS performance was assessed by discrimination using the area under the receiver-operating characteristic (AUROC) curve and by calibration using the Hosmer-Lemeshow (HL) goodness-of-fit test.

Findings

A total of 1047 children were admitted. The median age was 12 years (interquartile range [IQR]=5-15); 73·7% were male, and 66·1% had blunt trauma. The most frequent cause of injury was traffic accident (31·5%) followed by assaults (29%). Mortality was 5·9%; 61·3% of these deaths occurred in adolescents between 15 and 17 years of age and 71% of deaths in this age group were due to injuries from a firearm. The PTS had a median of 7 (IQR=5-9), an AUROC of 0·93, and good calibration (HL=7·97, p = 0·33).

Interpretation

The highest proportion of trauma and death occurred among adolescents. Interpersonal violence was the most frequent cause of death in this age group. The PTS showed good predictive power for survival, with excellent discrimination and good calibration.

Funding

None.

Access to pediatric surgery delivered by general surgeons and anesthesia providers in Uganda: Results from 2 rural regional hospitals

BACKGROUND

Significant limitations in pediatric surgical capacity exist in low- and middle-income countries, especially in rural regions. Recent global children's surgical guidelines suggest training and support of general surgeons in rural regional hospitals as an effective approach to increasing pediatric surgical capacity.

METHODS

Two years of a prospective clinical database of children's surgery admissions at 2 regional referral hospitals in Uganda were reviewed. Primary outcomes included case volume and clinical outcomes of children at each hospital. Additionally, the disability-adjusted life-years averted by delivery of pediatric surgical services at these hospitals were calculated. Using a value of statistical life calculation, we also estimated the economic benefit of the pediatric surgical care currently being delivered.

RESULTS

From 2016 to 2019, more than 300 surgical procedures were performed at each hospital per year. The majority of cases were standard general surgery cases including hernia repairs and intussusception as well as procedures for surgical infections and trauma. In-hospital mortality was 2.4% in Soroti and 1% in Lacor. Pediatric surgical capacity at these hospitals resulted in over 12,400 disability-adjusted life-years averted/year. This represents an estimated economic benefit of 10.2 million US dollars/year to the Ugandan society.

CONCLUSION

This investigation demonstrates that lifesaving pediatric procedures are safely performed by general surgeons in Uganda. General surgeons who perform pediatric surgery significantly increase surgical access to rural regions of the country and add a large economic benefit to Ugandan society. Overall, the results of the study support increasing pediatric surgical capacity in rural areas of low- and middle-income countries through support and training of general surgeons and anesthesia providers.

Performance of PRISM III and PIM 2 scores in a cancer pediatric intensive care unit

Objective

To assess the performance of Pediatric Risk of Mortality (PRISM) III and Pediatric Index of Mortality (PIM) 2 scores in the pediatric intensive care unit.

Methods

A retrospective cohort study. Data were retrospectively collected from medical records of all patients admitted to the pediatric intensive care unit of a cancer hospital from January 2017 to June 2018.

Results

The mean PRISM III score was 15, and PIM 2, 24%. From the 338 studied patients, 62 (18.34%) died. The PRISM III estimated mortality was 79.52 patients (23.52%) and for PIM 2 80.19 patients (23.72%), corresponding to a standardized mortality ratio (95% confidence interval: 0.78 for PRISM II and 0.77 for PIM 2). The Hosmer-Lemeshow chi-square test was 11.56, 8df, 0.975 for PRISM II and 0.48, 8df, p = 0.999 for PIM 2. The area under the Receiver Operating Characteristic curve was 0.71 for PRISM III and 0.76 for PIM 2.

Conclusion

Both scores overestimated mortality and have shown a regular ability to discriminate between survivors and non-survivors. Models should be developed to quantify the severity of cancer pediatric patients in Pediatric Intensive Care Units and to predict the mortality risk accounting for their peculiarities.

Calibration and validation of the pediatric resuscitation and trauma outcome model among injured children in Rwanda

BACKGROUND

Trauma is a leading cause of mortality in low- and middle-income countries. The Pediatric Resuscitation and Trauma Outcomes (PRESTO) model uses six low-tech variables available at point of care in resource-limited environments to predict in-hospital mortality of injured children. This model was never calibrated and validated in a low-income country. We aimed to calibrate the model's coefficients and compare its performance against the Revised Trauma Score (RTS) and Kampala Trauma Score (KTS) using data from a low-income country.

STUDY DESIGN

Data from 2011 to 2015 in the prospectively-maintained Rwanda Injury Registry were reviewed after ethical approval was obtained. Patients were included for analysis if they were referred or admitted for traumatic injury, were younger than 15 years and if hospital outcomes were recorded. The variables in the PRESTO model include age, hypotension, heart rate, neurological status, oxygen saturation and airway intervention. The outcome of interest was in-hospital death. After calibration, Receiver-Operating-Characteristic curves were constructed to compare the area-under-curve (AUC) of PRESTO, RTS, and KTS with imputation of missing data. Comparisons of the relative AUC's were performed using Delong's test after bootstrapping in the full cohort and in a subset of patients <5 years-old.

RESULTS

There were 113 in-hospital deaths out of 1695 included patients (6.7%). The AUC for the PRESTO model was 0.90 (95% CI [0.82-0.91]), higher than for RTS (0.77, 95% CI [0.80-0.97], p < 0.01) but not statistically different from KTS (0.89, 95% CI [0.72-0.82], p = 0.856). In the under-five cohort, the PRESTO model AUC was 0.84 (95% CI [0.75-0.92]), significantly higher than RTS (0.73 95% CI [0.64-0.81], p < 0.01) and KTS (0.58, 95% CI [0.50-0.66], p < 0.01).

CONCLUSION

PRESTO appears to be the superior benchmarking tool for pediatric patients in a low- and middle-income country context. The PRESTO score outperforms the KTS in children <5 years of age. Further validation of the PRESTO model is needed from other low- and middle-income settings.

LEVEL OF EVIDENCE

Level III: case-control (prognostic) study.

Validation of the PRESTO score in injured children in a South-African quaternary trauma center

INTRODUCTION

The Pediatric RESuscitation and Trauma Outcome (PRESTO) model was developed for standardized risk-adjustment in pediatric trauma and is adapted to low-resource settings. It includes easily-accessible demographic and physiologic variables that are available at point of care in virtually any setting. The purpose of this study was to evaluate the PRESTO model's ability to predict in-hospital mortality in a South African pediatric trauma unit by comparing it to the widely used Injury Severity Score (ISS).

METHODS

Data prospectively collected between 2007 and 2017 in the Inkosi Albert Luthuli Central Hospital Trauma Registry were retrospectively reviewed. Injured children younger than 14 years were included if they were admitted to hospital or died as a result of their injury. We excluded patients with minor injuries who were treated and discharged home and patients with incomplete hospital disposition data. Receiver-Operating Characteristic (ROC) curves were constructed for PRESTO and ISS, and the areas under the curve (AUCs) were compared using Delong's test. The sensitivity and specificity of PRESTO were calculated at different prognostic threshold values identified through literature review.

RESULTS

We identified 419 patients; 67 died in hospital (16%). The AUCs for PRESTO and ISS were 0.82 (95% confidence interval CI [0.76-0.87]) and 0.75 (CI [0.68-0.81]), respectively. This difference trended towards statistical significance (p = 0.07). Using the optimal threshold of 0.13 described in the original publication, PRESTO had a 97% sensitivity and 37% specificity, while a threshold of 0.50 yielded 90% sensitivity and 54% specificity. The mean predicted probability of in-hospital death among patients who died was 0.79. Using this value as a threshold yielded the 57% sensitivity and 85% specificity.

CONCLUSION

This analysis has demonstrated the validity of the PRESTO model for in-hospital mortality prediction for pediatric trauma patients in the setting of a dedicated high-complexity trauma unit in a South African trauma referral center.

LEVEL OF EVIDENCE

Level III: Case-control.

Global Emergency Medicine: A Review of the Literature From 2017

OBJECTIVES

The Global Emergency Medicine Literature Review (GEMLR) conducts an annual search of peer-reviewed and gray literature relevant to global emergency medicine (EM) to identify, review, and disseminate the most important new research in this field to a global audience of academics and clinical practitioners.

METHODS

This year, 17,722 articles written in three languages were identified by our electronic search. These articles were distributed among 20 reviewers for initial screening based on their relevance to the field of global EM. Another two reviewers searched the gray literature, yielding an additional 11 articles. All articles that were deemed appropriate by at least one reviewer and approved by their editor underwent formal scoring of overall quality and importance. Two independent reviewers scored all articles.

RESULTS

A total of 848 articles met our inclusion criteria and underwent full review. Sixty-three percent were categorized as emergency care in resource-limited settings, 23% as disaster and humanitarian response, and 14% as EM development. Twenty-one articles received scores of 18.5 or higher out of a maximum score 20 and were selected for formal summary and critique. Inter-rater reliability testing between reviewers revealed a Cohen's kappa of 0.344.

CONCLUSIONS

In 2017, the total number of articles identified by our search continued to increase. Studies and reviews with a focus on infectious diseases, pediatrics, and trauma represented the majority of top-scoring articles.

International Study of the Epidemiology of Paediatric Trauma: PAPSA Research Study

Objectives

Trauma is a significant cause of morbidity and mortality worldwide. The literature on paediatric trauma epidemiology in low- and middle-income countries (LMICs) is limited. This study aims to gather epidemiological data on paediatric trauma.

Methods

This is a multicentre prospective cohort study of paediatric trauma admissions, over 1 month, from 15 paediatric surgery centres in 11 countries. Epidemiology, mechanism of injury, injuries sustained, management, morbidity and mortality data were recorded. Statistical analysis compared LMICs and high-income countries (HICs).

Results

There were 1377 paediatric trauma admissions over 31 days; 1295 admissions across ten LMIC centres and 84 admissions across five HIC centres. Median number of admissions per centre was 15 in HICs and 43 in LMICs. Mean age was 7 years, and 62% were boys. Common mechanisms included road traffic accidents (41%), falls (41%) and interpersonal violence (11%). Frequent injuries were lacerations, fractures, head injuries and burns. Intra-abdominal and intra-thoracic injuries accounted for 3 and 2% of injuries. The mechanisms and injuries sustained differed significantly between HICs and LMICs. Median length of stay was 1 day and 19% required an operative intervention; this did not differ significantly between HICs and LMICs. No mortality and morbidity was reported from HICs. In LMICs, in-hospital morbidity was 4.0% and mortality was 0.8%.

Conclusion

The spectrum of paediatric trauma varies significantly, with different injury mechanisms and patterns in LMICs. Healthcare structure, access to paediatric surgery and trauma prevention strategies may account for these differences. Trauma registries are needed in LMICs for future research and to inform local policy.

Development and validation of a new pediatric resuscitation and trauma outcome (PRESTO) model using the U.S. National Trauma Data Bank

BACKGROUND

There is a need for a pediatric trauma outcomes benchmarking model that is adapted for Low-and-Middle-Income Countries (LMICs). We used the National-Trauma-Data-Bank (NTDB) and applied constraints specific to resource-poor environments to develop and validate an LMIC-specific pediatric trauma score.

METHODS

We selected a sample of pediatric trauma patients aged 0-14years in the NTDB from 2007 to 2012. Primary outcome was in-hospital death. Logistic regression was used to create the Pediatric Resuscitation and Trauma Outcome (PRESTO) score, which includes only low-tech predictor variables - those easily obtainable at point-of-care. Internal validation was performed using 10-fold cross-validation. External validation compared PRESTO to TRISS using ROC analyses.

RESULTS

Among 651,030 patients, there were 64% males. Median age was 7. In-hospital mortality-rate was 1.2%. Mean TRISS predicted mortality was 0.04% (range 0%-43%). Independent predictors included in PRESTO (p<0.01) were age, blood pressure, neurologic status, need for supplemental oxygen, pulse, and oxygen saturation. The sensitivity and specificity of PRESTO were 95.7% and 94.0%. The resulting model had an AUC of 0.98 compared to 0.89 for TRISS.

CONCLUSION

PRESTO satisfies the requirements of low-resource settings and is inherently adapted to children, allowing for benchmarking and eventual quality improvement initiatives. Further research is necessary for in-situ validation using prospectively collected LMIC data.

LEVEL OF EVIDENCE

Level III - Case-Control (Prognostic) Study.

Optimizing the assessment of pediatric injury severity in low-resource settings: Consensus generation through a modified Delphi analysis

INTRODUCTION

Although a plethora of pediatric injury severity scoring systems is available, many of them present important challenges and limitations in the low resource setting. Our aim is to generate consensus among a group of experts regarding the optimal parameters, outcomes, and methods of estimating injury severity for pediatric trauma patients in low resource settings.

MATERIALS AND METHODS

A systematic review of the literature was conducted to identify and compare existing injury scores used in pediatric patients. Qualitative data was extracted from the systematic review, including scoring parameters, settings and outcomes. In order to establish consensus regarding which of these elements are most adapted to pediatric patients in low-resource settings, they were subjected to a modified Delphi survey for external validation. The Delphi process is a structured communication technique that relies on a panel of experts to develop a systematic, interactive consensus method. We invited a group of 38 experts, including adult and pediatric surgeons, emergency physicians and anesthesiologists trauma team leaders from a level 1 trauma center in Montreal, Canada, and a pediatric referral trauma hospital in Santiago, Chile to participate in two successive rounds of our survey.

RESULTS

Consensus was reached regarding various features of an ideal pediatric trauma score. Specifically, our experts agreed pediatric trauma scoring tool should differ from its adult counterpart, that it can be derived from point of care data available at first assessment, that blood pressure is an important variable to include in a predictive model for pediatric trauma outcomes, that blood pressure is a late but specific marker of shock in pediatric patients, that pulse rate is a more sensitive marker of hemodynamic instability than blood pressure, that an assessment of airway status should be included as a predictive variable for pediatric trauma outcomes, that the AVPU classification of neurologic status is simple and reliable in the acute setting, and more so than GCS at all ages.

CONCLUSION

Therefore, we conclude that an opportunity exists to develop a new pediatric trauma score, combining the above consensus-generating ideas, that would be best adapted for use in low-resource settings.