Use of CT for Head Trauma: 2007-2015

Interventions to Reduce Imaging in Children With Minor Traumatic Head Injury: A Systematic Review

CONTEXT

Reducing unnecessary imaging in emergency departments (EDs) for children with minor traumatic brain injuries (mTBIs) has been encouraged.

OBJECTIVE

Our objective was to systematically review the effectiveness of interventions to decrease imaging in this population.

DATA SOURCES

Eight electronic databases and the gray literature were searched.

STUDY SELECTION

Comparative studies assessing ED interventions to reduce imaging in children with mTBIs were eligible.

DATA EXTRACTION

Two independent reviewers screened studies, completed a quality assessment, and extracted data. The median of relative risks with interquartile range (IQR) are reported. A multivariable metaregression identified predictors of relative change in imaging.

RESULTS

Twenty-eight studies were included, and most (79%) used before-after designs. The Pediatric Emergency Care Applied Research Network (PECARN) rule was the most common intervention (71%); most studies (75%) used multifaceted interventions (median components: 3; IQR: 1.75 to 4). Before-after studies assessing multi-faceted PECARN interventions reported decreased computed tomography (CT) head imaging (relative risk = 0.73; IQR: 0.60 to 0.89). Higher baseline imagine (P < .001) and additional intervention components (P = .008) were associated with larger imaging decreases.

LIMITATIONS

The limitations of this study include the inconsistent reporting of important outcomes and that the results are based on non-randomized studies.

CONCLUSIONS

Implementing interventions in EDs with high baseline CT ordering using complex interventions was more likely to reduce head imaging in children with mTBIs. Including the PECARN decision rule in the intervention strategy decreased orders by a median of 27%. Further research could provide insight into which specific factors influence successful implementation and sustained effects.

Types of Evidence Needed to Assess the Clinical Value of Diagnostic Imaging

AbstractThe evidence underlying the use of advanced diagnostic imaging is based mainly on diagnostic accuracy studies and not on well-designed trials demonstrating improved patient outcomes. This has led to an expansion of low-value and potentially harmful patient care and raises ethical issues around the widespread implementation of tests with incompletely known benefits and harms. Randomized clinical trials are needed to support the safety and effectiveness of imaging tests and should be required for clearance of most new technologies. Large, diverse cohort studies are needed to quantify disease risk associated with many imaging findings, especially incidental findings, to enable evidence-based management. The responsibility to minimize the use of tests with unknown or low value requires engagement of clinicians, medical societies, and the public.

Pediatric low-dose head CT: Image quality improvement using iterative model reconstruction

PURPOSE

To evaluate the differences in pediatric non-contrast low-dose head computed tomography (CT) between filtered-back projection and iterative model reconstruction using objective and subjective image quality evaluation.

METHODS

A retrospective study evaluated children undergoing low-dose non-contrast head CT. All CT scans were reconstructed using both filtered-back projection and iterative model reconstruction. Objective image quality analysis was performed using contrast and signal-to-noise ratios for the supra- and infratentorial brain regions of identical regions of interest on the two reconstruction methods. Two experienced pediatric neuroradiologists evaluated subjective image quality, visibility of structures, and artifacts.

RESULTS

We evaluated 233 low-dose brain CT scans of 148 pediatric patients. There was a ∼2-fold improvement in the contrast-to-noise ratio between gray and white matter in the infra- and supratentorial regions (p < 0.001) using iterative model reconstruction compared to filtered-back projection. The white and gray matter signal-to-noise ratio improved more than 2-fold using iterative model reconstruction (p < 0.001). Furthermore, radiologists graded anatomical details, gray-white matter differentiation, beam hardening artifacts, and image quality using iterative model reconstructions as superior to filtered-back projection reconstructions.

CONCLUSION

Iterative model reconstructions had better contrast-to-noise and signal-to-noise ratios with fewer artifacts in pediatric CT brain scans using low-dose radiation protocols. This image quality improvement was demonstrated in the supra- and infratentorial regions. This method thus comprises an important tool for reducing children's exposure while maintaining diagnostic capability.

Traumatic brain injury detection performance of the infant scalp score in children younger than 2 years in the pediatric emergency department

BACKGROUND

Our study sought to externally validate the Infant Scalp Score (ISS) within an international pediatric emergency department (PED) setting. The ISS for pediatric Closed Head Injury (CHI), includes age, hematoma localization, and size, and has the potential to predict the presence of Traumatic Brain Injury (TBI) on computed tomography. We aimed to describe a potentially low risk cohort of children younger than 24 months with CHI and scalp hematomas, where clinicians may limit diagnostic radiation exposure to this vulnerable patient population.

METHODS

This single-center retrospective study was conducted in Gazi University. Faculty of Medicine, Pediatric Emergency Department, a tertiary trauma care hospital. We reviewed patients (< 24 months) with CHI and scalp hematoma who visited the PED of our institution between January 1, 2019, and June 30, 2021 for rates of TBI and clinically important TBI (ciTBI).

RESULTS

380 cases met inclusion criteria for this study. The median age was 11 months and 58.7% were male children. 121 (31.8%) patients underwent CT, and 57% (n:69) of these studies were normal. TBI on CT was found in 26 (21.5%) patients with ciTBI was detected in 5 (1.3%) patients. All children with TBI were noted to have ISS scores of ≥ 5. Hematoma location OR 18.9 (95% CI, 3.4-105.1) and hematoma size OR 3.0 (95% CI, 1.2-7.3) were positively associated with presence of TBI.

CONCLUSIONS

Children with ISS scores of ≥ 5 were noted to have increased rates of both TBI and ciTBI. CHI related scalp hematomas located in the temporal/parietal region or with a size greater than 3 cm were associated with increased rates of TBI. Within the context of this study, ISS scores of 4 or less represented a lower risk for TBI and ciTBI. Future research on this potentially low risk pediatric CHI cohort is needed.

Computed Tomography Utilization in the Management of Children with Mild Head Trauma

This study demonstrates the trend of computed tomography (CT) usage for children with mild traumatic brain injury (mTBI) in the context of the initiation of the Safe CT Imaging Collaborative Initiative to promote the Pediatric Emergency Care Applied Research Network (PECARN) rules at the acute care hospitals in New Jersey. We used administrative databases of 10 children's and 59 general hospitals to compare CT rates before 2014-2015, during 2016, and after the initiation of the program (2017-2019). The CT usage rates at baseline and the end of surveillance in children's hospitals (19.2% and 14.2%) were lower than in general hospitals (36.7% and 21.0%), p < 0.0001. The absolute mean difference from baseline to the end of surveillance in children's hospitals was 5.1% compared to a high of 9.7% in general hospitals, medium-high with 13.2%, and 14.0% in a medium volume of pediatric patients (p < 0.001-0.0001). The time-series model demonstrates a positive trend of CT reduction in pediatric patients with mTBI within four years of the program's implementation (p < 0.03-0.001). The primary CT reduction was recorded during the year of program implementation. Regression analysis revealed the significant role of a baseline CT usage rate in predicting the level of CT reduction independent of the volume of pediatric patients and type of hospital.

Neuroimaging for mild traumatic brain injury in children: cross-sectional study using national claims data

BACKGROUND

Current guidelines recommend healthcare professionals avoid routine use of neuroimaging for diagnosing mild traumatic brain injury (mTBI).

OBJECTIVE

This study aimed to examine current use of CT and MRI among children and young adult patients with mTBI and factors that increase likelihood of neuroimaging in this population.

MATERIALS AND METHODS

Data were analyzed using the 2019 MarketScan commercial claims and encounters database for the commercially insured population for both inpatient and outpatient claims. Descriptive statistics and logistic regression models for patients  ≤24 years of age who received an ICD-10-CM code indicative of a possible mTBI were analyzed.

RESULTS

Neuroimaging was performed in 16.9% (CT; 95% CI=16.7-17.1) and 0.9% (MRI; 95% CI=0.8-0.9) of mTBI outpatient visits (including emergency department visits) among children (≤18 years old). Neuroimaging was performed in a higher percentage of outpatient visits for patients 19-24 years old (CT=47.1% [95% CI=46.5-47.6] and MRI=1.7% [95% CI=1.5-1.8]), and children aged 15-18 years old (CT=20.9% [95% CI=20.5-21.2] and MRI=1.4% [95% CI=1.3-1.5]). Outpatient visits for males were 1.22 (95% CI=1.10-1.25) times more likely to include CT compared to females, while there were no differences by sex for MRI or among inpatient stays. Urban residents, as compared to rural, were less likely to get CT in outpatient settings (adjusted odds ratio [aOR]=0.55, 95% CI=0.53-0.57). Rural residents demonstrated a larger proportion of inpatient admissions that had a CT.

CONCLUSIONS

Despite recommendations to avoid routine use of neuroimaging for mTBI, neuroimaging remained common practice in 2019.

Risk Factors Associated with Traumatic Brain Injury and Implementation of Guidelines for Requesting Computed Tomography After Head Trauma Among Children in France

Importance

Pediatric traumatic brain injuries (TBIs) are a leading cause of death and disability. The Pediatric Emergency Care Applied Research Network (PECARN) guidelines provide a framework for requesting head computed tomography (HCT) after pediatric head trauma (PHT); however, quantitative data are lacking regarding both TBIs found on HCT and justification of the HCT request according to the PECARN guidelines.

Objectives

To evaluate the types, frequencies, and risk factors for TBIs on HCT in children referred to emergency departments (EDs) who underwent HCT for PHT and to evaluate quality of HCT request.

Design, Setting, and Participants

This multicenter, retrospective cohort study included patients younger than 18 years who underwent HCT for PHT who were referred to 91 EDs during on-call hours between January 1, 2020, to May 31, 2022. Data were analyzed between July and August 2022.

Exposure

All radiological reports with pathologic findings were reviewed by 4 senior radiologists. Six hundred HCT requests filled by emergency physicians were randomly sampled to review the examination justification according to the PECARN guidelines.

Main Outcomes and Measures

Associations between TBIs, age, sex, and Glasgow Coma Scale (GCS) were investigated using univariable χ2 and Cochrane-Armitage tests. Multivariable stepwise binary logistic regressions were used to estimate the odds ratio (ORs) for intracranial hemorrhages (ICH), any type of fracture, facial bone fracture, and skull vault fracture.

Results

Overall, 5146 children with HCT for PHT were included (median [IQR] age, 11.2 [4.7-15.7] years; 3245 of 5146 [63.1%] boys). ICHs were diagnosed in 306 of 5146 patients (5.9%) and fractures in 674 of 5146 patients (13.1%). The following variables were associated with ICH in multivariable analysis: GCS score of 8 or less (OR, 5.83; 95% CI, 1.97-14.60; P < .001), extracranial hematoma (OR, 2.54; 95% CI, 1.59-4.02; P < .001), skull base fracture (OR, 9.32; 95% CI, 5.03-16.97; P < .001), upper cervical fracture (OR, 19.21; 95% CI, 1.79-143.59; P = .006), and skull vault fracture (OR, 35.64; 95% CI, 24.04-53.83; P < .001). When neither extracranial hematoma nor fracture was found on HCT, the OR for presenting ICH was 0.034 (95% CI, 0.026-0.045; P < .001). Skull vault fractures were more frequently encountered in children younger than 2 years (multivariable OR, 6.31; 95% CI, 4.16-9.66; P < .001; reference: children ≥12 years), whereas facial bone fractures were more frequently encountered in boys older than 12 years (multivariable OR, 26.60; 95% CI, 9.72-109.96; P < .001; reference: children younger than 2 years). The justification for performing HCT did not follow the PECARN guidelines for 396 of 589 evaluable children (67.2%) for requests filled by emergency physicians.

Conclusion and Relevance

In this cohort study of 5146 children who underwent HCT for PHT, knowing the odds of clinical and radiological features for ICHs and fractures could help emergency physicians and radiologists improve their image analysis and avoid missing significant injuries. The PECARN rules were not implemented in nearly two-thirds of patients.

Variation in NICU Head CT Utilization Among U.S. Children's Hospitals

OBJECTIVES

Evaluate nationwide 12-year trend and hospital-level variation in head computed tomography (CT) utilization among infants admitted to pediatric hospital NICUs. We hypothesized there was significant variation in utilization.

METHODS

We conducted a retrospective cohort study examining head CT utilization for infants admitted to the NICU within 31 United States children's hospitals within the Pediatric Health Information System database between 2010 and 2021. Mixed effects logistic regression was used to estimate head CT, head MRI, and head ultrasound utilization (% of admissions) by year. Risk-adjusted hospital head CT rates were examined within the 2021 cohort.

RESULTS

Between 2010 and 2021, there were 338 644 NICU admissions, of which 10 052 included head CT (3.0%). Overall, head CT utilization decreased (4.9% in 2010 to 2.6% in 2021, P < .0001), with a concomitant increase in head MRI (12.1% to 18.7%, P < .0001) and head ultrasound (41.3% to 43.4%, P < .0001) utilization. In 2021, significant variation in risk-adjusted head CT utilization was noted across centers, with hospital head CT rates ranging from 0% to 10% of admissions. Greatest hospital-level variation was noted for patients with codes for seizure or encephalopathy (hospital head CT rate interquartile range [IQR] = 11.6%; 50th percentile = 12.0%), ventriculoperitoneal shunt (IQR = 10.8%; 50th percentile = 15.4%), and infection (IQR = 10.1%; 50th percentile = 7.5%).

CONCLUSIONS

Head CT utilization within pediatric hospital NICUs has declined over the past 12-years, but substantial hospital-level variation remains. Development of CT stewardship guidelines may help decrease variation and reduce infant radiation exposure.

Deep-learning synthesized pseudo-CT for MR high-resolution pediatric cranial bone imaging (MR-HiPCB)

PURPOSE

CT is routinely used to detect cranial abnormalities in pediatric patients with head trauma or craniosynostosis. This study aimed to develop a deep learning method to synthesize pseudo-CT (pCT) images for MR high-resolution pediatric cranial bone imaging to eliminating ionizing radiation from CT.

METHODS

3D golden-angle stack-of-stars MRI were obtained from 44 pediatric participants. Two patch-based residual UNets were trained using paired MR and CT patches randomly selected from the whole head (NetWH) or in the vicinity of bone, fractures/sutures, or air (NetBA) to synthesize pCT. A third residual UNet was trained to generate a binary brain mask using only MRI. The pCT images from NetWH (pCTNetWH ) in the brain area and NetBA (pCTNetBA ) in the nonbrain area were combined to generate pCTCom . A manual processing method using inverted MR images was also employed for comparison.

RESULTS

pCTCom (68.01 ± 14.83 HU) had significantly smaller mean absolute errors (MAEs) than pCTNetWH (82.58 ± 16.98 HU, P < 0.0001) and pCTNetBA (91.32 ± 17.2 HU, P < 0.0001) in the whole head. Within cranial bone, the MAE of pCTCom (227.92 ± 46.88 HU) was significantly lower than pCTNetWH (287.85 ± 59.46 HU, P < 0.0001) but similar to pCTNetBA (230.20 ± 46.17 HU). Dice similarity coefficient of the segmented bone was significantly higher in pCTCom (0.90 ± 0.02) than in pCTNetWH (0.86 ± 0.04, P < 0.0001), pCTNetBA (0.88 ± 0.03, P < 0.0001), and inverted MR (0.71 ± 0.09, P < 0.0001). Dice similarity coefficient from pCTCom demonstrated significantly reduced age dependence than inverted MRI. Furthermore, pCTCom provided excellent suture and fracture visibility comparable to CT.

CONCLUSION

MR high-resolution pediatric cranial bone imaging may facilitate the clinical translation of a radiation-free MR cranial bone imaging method for pediatric patients.

Improving Head CT Scan Decisions for Pediatric Minor Head Trauma in General Emergency Departments: A Pragmatic Implementation Study

STUDY OBJECTIVE

To measure the effectiveness of a multimodal strategy, including simultaneous implementation of a clinical decision support system, to sustain adherence to a clinical pathway for care of children with minor head trauma treated in general emergency departments (EDs).

METHODS

Prospective, type III hybrid effectiveness-implementation cohort study with a nonrandomized stepped-wedge design and monthly repeated site measures. The study population included pediatric minor head trauma encounters from July 2018 to December 2020 at 21 urban and rural general ED sites in an integrated health care system. Sites received the intervention in 1 of 2 steps, with each site providing control and intervention observations. Measures included guideline adherence, the computed tomography (CT) scan rate, and 72-hour readmissions with clinically important traumatic brain injury. Analysis was performed using multilevel hierarchical modeling with random intercepts for the site and physician.

RESULTS

During the study, 12,670 pediatric minor head trauma encounters were cared for by 339 clinicians. The implementation of the clinical pathway resulted in higher odds of guideline adherence (adjusted odds ratio 1.12 [95% confidence interval 1.03 to 1.22]) and lower odds of a CT scan (adjusted odds ratio 0.96 [95% confidence interval 0.93 to 0.98]) in intervention versus control months. Absolute risk difference was observed in both guideline adherence (site median: +2.3% improvement) and the CT scan rate (site median: -6.6% reduction). No 72-hour readmissions with confirmed clinically important traumatic brain injury were identified.

CONCLUSION

Implementation of a minor head trauma clinical pathway using a multimodal approach, including a clinical decision support system, led to sustained improvements in adherence and a modest, yet safe, reduction in CT scans among generally low-risk patients in diverse general EDs.

"Feed and Swaddle" method of Infants Undergoing Head CT for minor head injury in the pediatric emergency department - A comparative case review

INTRODUCTION

Brain imaging for suspected significant head injuries in pediatric emergency departments is an important and time-sensitive procedure. The use of sedation to successfully complete imaging can be limited due to young age and other injury related factors. Using a non-pharmacological method using feeding and swaddling can be used. This may obviate the need for sedation but can be time consuming.

METHODS

A retrospective study of all children undergoing brain imaging for head injury during the years 2016-2021. Use of sedation, time to completion and imaging findings were compared.

RESULTS

Of 281 children requiring brain imaging, 268 (95.4%) were completed using the feed and swaddle method. Time to imaging completion was similar between sedation and feed and swaddle groups (85.5 min vs. 86 min). Abnormal findings on imaging were found in 186 (69.4%) in the feed and swaddle group and in 10 (77%) of the sedation group. No adverse events were seen in the sedation group.

CONCLUSION

Using the feed and swaddle method can help lower the need for sedation in the under 1 year age group with a successful and timely completion of brain imaging.

Non-ionizing Imaging for the Emergency Department Assessment of Pediatric Minor Head Trauma

Minor blunt head trauma (MHT) represents a common reason for presentation to the pediatric emergency department (ED). Despite the low incidence of clinically important traumatic brain injuries (ciTBIs) following MHT, many children undergo computed tomography (CT), exposing them to the risk associated with ionizing radiation. The clinical predictions rules developed by the Pediatric Emergency Care Applied Research Network (PECARN) for MHT are validated accurate tools to support decision-making about neuroimaging for these children to safely reduce CT scans. However, a few non-ionizing imaging modalities have the potential to contribute to further decrease CT use. This narrative review provides an overview of the evidence on the available non-ionizing imaging modalities that could be used in the management of children with MHT, including point of care ultrasound (POCUS) of the skull, near-infrared spectroscopy (NIRS) technology and rapid magnetic resonance imaging (MRI). Skull ultrasound has proven an accurate bedside tool to identify the presence and characteristics of skull fractures. Portable handheld NIRS devices seem to be accurate screening tools to identify intracranial hematomas also in pediatric MHT, in selected scenarios. Both imaging modalities may have a role as adjuncts to the PECARN rule to help refine clinicians' decision making for children at high or intermediate PECARN risk of ciTBI. Lastly, rapid MRI is emerging as a feasible and accurate alternative to CT scan both in the ED setting and when repeat imaging is needed. Advantages and downsides of each modality are discussed in detail in the review.

Verification of Usefulness of Pediatric Head Trauma Imaging Protocol Combining Computerized Tomography, Observation Unit, and Magnetic Resonance Imaging

METHODS

This prospective observational study conducted in our hospital between October 2016 and September 2019 included 1946 patients aged 0 to 15 years with head trauma, of whom 1137 were analyzed. Computed tomography scan rate and imaging examination (CT or MRI) rate of our protocol were investigated. Sensitivity and negative predictive value (NPV) were calculated. We also compared our protocol and other clinical decision rules with respect to CT scan rate, sensitivity, and NPV in the same cohort and outcomes.

RESULTS

The CT scan rate of our protocol was 7.9%, and the imaging examination rate, including MRI, was 12.2%. When the outcome was set to intracranial injury, the sensitivity and NPV of our protocol were each 100%. The CT scan rates in each cohort were 14.5% for PECARN (8.1% for our protocol), 34.7% for CATCH (23.2% for ours), and 13.6% for CHALICE (7.9% for ours). The sensitivity and NPV in each cohort were 100% and 100% for PECARN (92.3% and 100% for ours), 64.7% and 92.6% for CATCH (100% and 100% for ours), and 83.9% and 99.5% for CHALICE (100% and 100% for ours), respectively.

CONCLUSIONS

The protocol we created by combining CT, observation unit, and MRI was considered to be useful for practice in pediatric head injury cases.

Deep Learning-Assisted Diagnosis of Pediatric Skull Fractures on Plain Radiographs

Objective

To develop and evaluate a deep learning-based artificial intelligence (AI) model for detecting skull fractures on plain radiographs in children.

Materials and Methods

This retrospective multi-center study consisted of a development dataset acquired from two hospitals (n = 149 and 264) and an external test set (n = 95) from a third hospital. Datasets included children with head trauma who underwent both skull radiography and cranial computed tomography (CT). The development dataset was split into training, tuning, and internal test sets in a ratio of 7:1:2. The reference standard for skull fracture was cranial CT. Two radiology residents, a pediatric radiologist, and two emergency physicians participated in a two-session observer study on an external test set with and without AI assistance. We obtained the area under the receiver operating characteristic curve (AUROC), sensitivity, and specificity along with their 95% confidence intervals (CIs).

Results

The AI model showed an AUROC of 0.922 (95% CI, 0.842–0.969) in the internal test set and 0.870 (95% CI, 0.785–0.930) in the external test set. The model had a sensitivity of 81.1% (95% CI, 64.8%–92.0%) and specificity of 91.3% (95% CI, 79.2%–97.6%) for the internal test set and 78.9% (95% CI, 54.4%–93.9%) and 88.2% (95% CI, 78.7%–94.4%), respectively, for the external test set. With the model’s assistance, significant AUROC improvement was observed in radiology residents (pooled results) and emergency physicians (pooled results) with the difference from reading without AI assistance of 0.094 (95% CI, 0.020–0.168; p = 0.012) and 0.069 (95% CI, 0.002–0.136; p = 0.043), respectively, but not in the pediatric radiologist with the difference of 0.008 (95% CI, -0.074–0.090; p = 0.850).

Conclusion

A deep learning-based AI model improved the performance of inexperienced radiologists and emergency physicians in diagnosing pediatric skull fractures on plain radiographs.

Impact of Pediatric Emergency Care Applied Research Network Rules on Admission, Cranial Computed Tomography and Skull X-ray Rates in a Central European Hospital

OBJECTIVES

Mild head injury is a common cause of pediatric emergency department visits. Cranial computed tomography (CCT) is the diagnostic standard, although it involves inherent radiation risks. Pediatric Emergency Care Applied Research Network (PECARN) clinical prediction rules were developed to reduce the number of CCT scans. They provide a guideline for CCT use in mild head injuries, based on clinical parameters.Our study aims to evaluate the impact of PECARN rules on hospital admission and CCT rate in children with mild head injury.

METHODS

In this retrospective study, we investigated 729 children with mild head injury presenting in the pediatric emergency department between 2012 and 2016. We compared 2 groups, before and after implementation of PECARN criteria in clinical routine.

RESULTS

Of 729 included patients (417 male; 5.6 ± 4.8 years;) 380 were seen prior to implementation of the PECARN rules, compared to 349 patients afterwards. Overall admissions to the ward decreased significantly from 83.9% (n = 319) to 71.3% (n = 249) (P < 0.001), a 31.3% reduction. Calculated from all pediatric admissions, the rate of patients with mild head injury fell from 6.0% to 4.3% (P < 0.001).We recorded a nonsignificant decrease in the CCT rate, from 14.7% to 13.2% (P = 0.555).No readmissions were recorded.

CONCLUSIONS

Our results show a significant reduction in the rate of hospital admission following implementation of the PECARN rules in our hospital. Already low, the CCT rate did not change after implementation.The PECARN rules appear to be safe because no readmissions were recorded.

Estimation of radiation dose and establishment of local diagnostic reference levels for computed tomography of head in pediatric population

BACKGROUND

Pediatric population is more sensitive to the effects of radiation than adults. Establishing diagnostic reference level (DRL) is an efficient dose optimization technique implemented by many countries for reducing radiation dose during Computed Tomography (CT) examinations.

OBJECTIVES

To estimate radiation dose and establish a new local diagnostic reference level for CT head examination in the pediatric population.

MATERIALS AND METHODS

We prospectively recruited 143 pediatric patients referred for CT head examination with age ranging from 0-5 years old. All patients had undergone CT head examination using the standard pediatric head protocol. Volumetric CT dose index (CTDIvol) and dose length product (DLP) were recorded. The effective dose was first calculated. Then, 75th percentile of dose indices was calculated to establish DRLs.

RESULTS

DRLs in terms of CTDIvol and DLP are 23.84 mGy, 555.99 mGy.cm for patients <1 years old and 28.65 mGy, 794.99 mGy.cm for patients from 1-5 years old, respectively. Mean effective doses for <1 years old patients and 1-5 years old patients are 2.91 mSv and 2.78 mSv respectively.

CONCLUSION

The study concludes that DRL in terms of CTDIvol is lower but DRL in terms of DLP and the effective dose is higher compared to a few other studies which necessitate the need for dose optimization.

Quality Indicators for Children With Traumatic Brain Injury After Transition to an American College of Surgeons Level I Pediatric Trauma Center

OBJECTIVE

The aim of the study was to compare quality indicators, including frequency of acute surgical and emergent interventions, and resource utilization before and after American College of Surgeons (ACS) level I trauma verification among children with moderate or severe traumatic brain injury (TBI).

METHODS

This is a retrospective review of patients younger than 18 years treated for moderate or severe TBI, as determined by International Classification of Disease codes. Our institution obtained ACS level I trauma verification in 2013. Outcomes during the pre-ACS (June 2003-May 2008), interim (June 2008-May 2013), and post-ACS (June 2013-May 2018) periods were compared via nonparametric tests. Tests for linear trend were conducted using Cochran-Armitage tests for categorical data and by linear regression for continuous variables.

RESULTS

There were 677 children with moderate or severe TBIs (pre-ACS, 125; interim, 198; post-ACS, 354). Frequency of any surgical intervention increased significantly in the post-ACS period (12.2%) compared with interim (5.1%) and pre-ACS periods (5.6%, P = 0.007). More children in the post-ACS period required intracranial pressure monitoring (P = 0.017), external ventricular drain placement (P = 0.003), or endotracheal intubation (P = 0.001) compared with interim and pre-ACS periods. There was no significant change in time to operating room (P = 0.514), frequency of decompression (P = 0.096), or time to decompression (P = 0.788) between study periods. The median time to head CT decreased significantly in the post-ACS period (26 minutes; interquartile range [IQR], 9-60) compared with interim (36 minutes; IQR, 21-69) and pre-ACS periods (53 minutes; IQR, 36-89; P < 0.001). Frequency of repeat head computed tomography decreased significantly in the post-ACS period (30.2%) compared with interim (56.1%) and pre-ACS periods (64.0%, Ptrend = 0.044).

CONCLUSIONS

Transition to an ACS level I trauma verification was associated with improvements in quality indicators for children with moderate or severe TBI.

External validation and comparison of the Pediatric Emergency Care Applied Research Network and Canadian Assessment of Tomography for Childhood Head Injury 2 clinical decision rules in children with minor blunt head trauma

Objective

Among the pediatric population with minor head trauma, it is difficult to determine an indication for the usage of brain computerized tomography (CT). Our study aims to compare the efficiency of the most commonly used clinical decision rules: the Pediatric Emergency Care Applied Research Network (PECARN) and Canadian Assessment of Tomography for Childhood Head Injury 2 (CATCH2).

Methods

This retrospective study investigated whether the PECARN and CATCH2 rules were applicable to Korean children with minor head trauma for reducing the use of brain CT imaging, while detecting intracranial pathology.

Results

Overall, 251 patients (0–5 years old) admitted to emergency rooms within 24 hours of injury were included between August 2015 to August 2018. The performance results are as follows: the PECARN and CATCH2 rules had a sensitivity of 80.00% (51.91%–95.67%) and 100% (78.20%–100.00%) with a specificity of 28.39% (22.73%–34.60%) and 15.25% (10.92%–20.49%), respectively; the negative predictive values were 98.58% and 100%, respectively. Overall, the CATCH2 rule was more successful than the PECARN rule in detecting intracranial pathology; however, there was no significant difference between them. Furthermore, the PECARN and CATCH2 rules lowered the rate of head CT imaging in our study group.

Conclusion

Both the rules significantly lowered the rate of indicated brain CT. However, since the CATCH2 rule had higher sensitivity and negative predictive value than the PECARN rule, it is more appropriate to be used in emergency rooms for detecting intracranial pathology in children with minor head trauma.

Reducing Computed Tomography Scan Utilization for Pediatric Minor Head Injury in the Emergency Department: A Quality Improvement Initiative

BACKGROUND

The validated Pediatric Emergency Care Applied Research Network (PECARN) prediction rules are meant to aid clinicians in safely reducing unwarranted imaging in children with minor head injuries (MHI). Even so, computed tomography (CT) scan utilization remains high, especially in intermediate-risk (per PECARN) MHI patients. The primary objective of this quality improvement initiative was to reduce CT utilization rates in the intermediate-risk MHI patients.

METHODS

This project was conducted in a Level I trauma pediatric emergency department (ED). Children < 18 years evaluated for intermediate-risk MHI from June 2016 through July 2019 were included. Our key drivers were provider education, decision support, and performance feedback. Our primary outcome was change in head CT utilization rate (%). Balancing measures included return visit within 72 hours of the index visit, ED length of stay (LOS), and clinically important traumatic brain injury (ciTBI) on the revisit. We used statistical process control methodology to assess head CT rates over time.

RESULTS

A total of 1,535 eligible intermediate-risk MHI patients were analyzed. Our intervention bundle was associated with a decrease in CT use from 18.5% (95% confidence interval [CI] = 14.5% to 22.5%) in the preintervention period to 13.9% (95% CI = 13.8% to 14.1%) in the postintervention period, an absolute reduction of 4.6% (p = 0.015). Over time, no difference was noted in either ED LOS or return visit rate. There was only one revisit with a ciTBI to our institution during the study period.

CONCLUSIONS

Our multifaceted quality improvement initiative was both safe and effective in reducing our CT utilization rates in children with intermediate-risk MHI.

Use of Neuroimaging for Children With Seizure in General and Pediatric Emergency Departments

BACKGROUND

Seizure is a common reason for children to visit the emergency department (ED). Pediatric and general EDs may obtain computed tomography (CT) scans of the head for seizure at different rates.

OBJECTIVE

To compare rates of head CT for pediatric seizure between general and pediatric EDs.

METHODS

This was a retrospective cohort study using the National Hospital Ambulatory Medical Care Survey for patients <21 years of age presenting to an ED with a chief complaint or diagnosis of seizure between 2006 to 2017. Of these patients, we compared head CT use between general and pediatric EDs among patients with fever, trauma, and co-diagnosis of epilepsy using univariable risk differences and in a multivariable logistic regression model.

RESULTS

More than 5 (5.4) million (78.8%) and 1.5 million (21.2%) pediatric patients with seizure presented to general and pediatric EDs, respectively. Of those, 22.4% (1.21 million) and 13.2% (192,357) underwent CT scans of the head, respectively, a risk difference of 9.2% (95% confidence interval [CI] 2.3-16.1). General EDs obtained CT scans of the head more often in patients with epilepsy (risk difference 17.9% [95% CI 4.0-31.9]), without fever (12.2% [95% CI 3.1-21.4]), and without trauma (10.6% [95% CI 4.4-16.8]). Presenting to a general ED, being afebrile, or having trauma were associated with head CT with adjusted odds ratios of 1.7 (95% CI 1.0-3.2), 4.9 (95% CI 2.6-9.2), and 2.0 (95% CI 1.2-3.4), respectively. Age, gender, and epilepsy were not associated with head CT among all patients with seizure.

CONCLUSIONS

Children with seizure are more likely to undergo CT scans of the head at general EDs compared with pediatric EDs.

Minor head injury transfers: Trends and outcomes

BACKGROUND

Children with traumatic head injury are often transferred from community Emergency Departments (ED) to a Pediatric Emergency Department (PED). The primary objective of this study was to describe the outcomes of minor head injury (MHI) transfers to a PED. The secondary objective was to report Computed Tomography (CT) utilization rates for MHI.

METHODS

We conducted a retrospective study of children aged ≤18 years transferred to our PED for MHI from 2013 to 2018. Patients with Glasgow Coma Scale (GCS) < 14, coagulopathies, history of brain mass/shunt and suspected non-accidental trauma were excluded. Data collected included demographics, interventions performed, and disposition. MHI risk stratification and clinically important traumatic brain injury (ciTBI) were defined per the Pediatric Emergency Care Applied Research Network (PECARN) head injury guidelines. Descriptive statistics were reported using general measures of frequency and central tendency.

RESULTS

A total of 1078 children with MHI were analyzed based on eligibility criteria. The majority of patients were male (62%) and ≥ 2 years of age (69.3%). Subspecialist consultation (57.2%) and neuroimaging (27.4%) were the most commonly performed interventions in the PED. Only 14 children (1.3%) required neurosurgical intervention. One-third of the transferred patients required no additional work-up. Two-thirds of the patients (66.6%) were directly discharged from the PED. Though the total number of MHI transfers per year declined steadily during the study period (from 271/year to 119/year), CT head utilization remained relatively similar across the study years (60.3% to 70.8%). A higher proportion of children received CT in the ED when compared to the PED for low-risk (28.9% vs 15.8%) and intermediate-risk groups (42.8% vs 29.4%).

CONCLUSIONS

The majority of pediatric MHI transfers are discharged home following a subspecialty consultation and/or neuroimaging. Despite guidelines and a low incidence of ciTBI, CT utilization remains high in the intermediate and low risk MHI groups, especially in the community settings. Targeted interventions are needed to reduce the potentially avoidable transfers and low-value performance of CT in children with MHI.

Pediatric minor head injury related return visits to the emergency department and their outcome

BACKGROUND

Minor head injury (MHI) in children is a common emergency department (ED) presentation. It is well established that majority of these patients don't require imaging and can be safely discharged. What is less known is how often these children come back to the ED and the outcome of their revisits? The objective of this study was to describe the frequency and outcome of unscheduled return visits (RVs) for MHI in a pediatric ED.

METHODS

A retrospective chart review of emergency department RV's database was conducted from August 2016 to July 2019. MHI patients <18 years of age who came back to the ED within 72 h of their index visit - for head injury related complaints - were eligible for inclusion.

RESULTS

Return visit rate for MHI was around 1% (61/6225). Of these, 55.7% (34/61) were female and 85.5% (53/61) were in the age group 2-17 years. Three-fourths of the revisits were for concussion-related symptoms. Nearly two-thirds of the patients required one or more interventions upon revisit. Missed clinically important traumatic brain injury was rare. Only one patient required operative intervention upon revisit. Though largely unpreventable, 5% (3/61) of the revisits were deemed potentially avoidable.

CONCLUSION(S)

RVs secondary to MHI in children remain low and are associated with good outcomes.

Initiatives to reduce treatments in bronchiolitis in the emergency department and primary care

We performed a quality improvement initiative to reduce unnecessary treatments for acute bronchiolitis (AB) in primary care (PC) and the referral paediatric emergency department (ED). The quality improvement initiative involved two seasons: 2016-2017 (preintervention) and 2017-2018 (postintervention). We distributed an evidence-based protocol, informative posters and badges with the slogan 'Bronchiolitis, less is more'. We also held interactive sessions, and paediatricians received weekly reports on bronchodilator prescription. The main outcome was the percentage of infants prescribed salbutamol. Secondary outcomes were epinephrine, antibiotic and corticosteroid prescription rates. Control measures were ED visit and hospitalisation rates, triage level, length of stay, intensive care admission and unscheduled returns with admission. We included 1878 ED and 1192 PC visits of which 855 (44.5%) and 534 (44.7%) occurred in the postintervention period, respectively. In the ED, salbutamol and epinephrine prescription rates fell from 13.8% (95% CI 11.8% to 16%) to 9.1% (95% CI 7.3% to 11.2%) (p<0.01) and 10.4% (95% CI 8.6% to 12.4%) to 9% (95% CI 7.2% to 11.1%) (n.s.), respectively. In PC, salbutamol, corticosteroid and antibiotic prescription rates fell from 38.3% (95% CI 34.6% to 42.0%) to 15.9% (95% CI 12.9% to 19.5%) (p<0.01), 12.9% (95% CI 10.5% to 15.7%) to 3.6% (95% CI 2.2% to 5.7%) (p<0.01) and 29.6% (95% CI 26.2% to 33.2%) to 9.5% (95% CI 7.2% to 12.5%) (p<0.01), respectively. No significant variations were noted in control measures. We safely decreased the use of unnecessary treatments for AB. Collaboration between PC and ED appears to be an important factor for success.

Atypical teratoid rhabdoid tumor in the cerebellum of a 7-year-old boy presenting with headache after a fall

A 7-year-old boy presented to a community emergency department (ED) after sustaining a minor fall. Although he was found to have a normal neurologic examination, additional history revealed the patient had been having mild intermittent headaches and dizziness in the months preceding the fall. The emergency clinicians ordered neuroimaging, which demonstrated a right cerebellar mass, ultimately diagnosed as atypical rhabdoid/teratoid tumor. Atypical rhabdoid/teratoid tumor is a rare, aggressive brain tumor with a poor prognosis. The objectives of this case report are to emphasize the importance of detailed history with pediatric head trauma, in particular on reassessment, and to discuss briefly the epidemiology and management of atypical teratoid rhabdoid tumor.

Addressing Key Clinical Care and Clinical Research Needs in Severe Pediatric Traumatic Brain Injury: Perspectives From a Focused International Conference

Traumatic brain injury (TBI) is a leading cause of morbidity and mortality in children and adolescents. Survivors of severe TBI are more prone to functional deficits, resulting in poorer school performance, poor health-related quality of life (HRQoL), and increased risk of mental health problems. Critical gaps in knowledge of pathophysiological differences between children and adults concerning TBI outcomes, the paucity of pediatric trials and prognostic models and the uncertain extrapolation of adult data to pediatrics pose significant challenges and demand global efforts. Here, we explore the clinical and research unmet needs focusing on severe pediatric TBI to identify best practices in pathways of care and optimize both inpatient and outpatient management of children following TBI.

Pediatric emergency medicine literature 2020

Most children are treated at general Emergency Departments (EDs) and not specialized pediatric EDs. Therefore, it is crucial for emergency medicine physicians to be aware of recent developments in pediatric emergency medicine. Often impactful articles on pediatric emergency medicine are not published in the journals regularly studied by general emergency medicine physicians. We selected ten studies that we found impactful, robust, and relevant for practicing general emergency physicians. This review includes studies of status epilepticus, cardiac arrest, asthma, infant fever, wound care, rapid sequence intubation, coronavirus, and trauma.

Imaging pediatric acute head trauma using 100-kVp low dose CT with adaptive statistical iterative reconstruction (ASIR-V) in single rotation on a 16 cm wide-detector CT

OBJECTIVE

To demonstrate the ability of achieving low dose and high-quality head CT images for children with acute head trauma using 100 kVp and adaptive statistical iterative reconstruction (ASIR-V) algorithm in single rotation on a 16 cm wide-detector system.

MATERIALS AND METHODS

We retrospectively analyzed the CT dose index (CTDI) and image quality of 104 children aged 0-6 years with acute head trauma (1 hour -3 days) in two groups: Group 1(n = 50) on a 256-row CT with single rotation at a reduced-dose of 100 kVp/240 mA and reconstructed using ASIR-V at 70%level; Group 2(n = 54) on a 64-row CT with multiple rotations at a standard dose of 120 kVp/ 180mA and reconstructed using a conventional filtered back-projection (FBP). Both groups used the 0.5 s/r axial scan mode. CT dose index (CTDI) and quantitative image quality measurements were compared using the Student t test; qualitative image quality comparison was carried out using Mann-Whitney rank test and the inter-reviewer agreement was evaluated using Kappa test.

RESULTS

The exposure time was 0.5 s for Group 1 and 3.27±0.29 s for Group 2. The CTDI in Group 1 was 9.74±0.86mGy, 36.38%lower than the 15.31mGy in Group 2 (p < 0.001). Group 1 and Group 2 had similar artifact index (2.06±1.06 vs. 2.37±1.18) in the cerebellar hemispheres, and similar contrast-to-noise ratio (2.32±0.83 vs. 1.69±0.68), (1.47±0.72 vs. 1.10±0.43) respectively for cerebellum and thalamus (p > 0.05). Image quality was acceptable for diagnosis, and motion artifacts were reduced in Group 1 (p < 0.001).

CONCLUSION

Single rotation CT with 100 kVp and 70%ASIR-V on 16 cm wide-detector CT reduces radiation dose and motion artifacts for children with acute head trauma without compromising diagnostic quality as compared with standard dose protocol. Thus, it provides a novel imaging method in management of pediatric acute head trauma.

The Infant Scalp Score: A Validated Tool to Stratify Risk of Traumatic Brain Injury in Infants With Isolated Scalp Hematoma

OBJECTIVES

The objective was to validate the previously derived Infant Scalp Score (ISS) that uses clinical signs in infants with isolated scalp hematoma (ISH) after head trauma to stratify risk for clinically important traumatic brain injury (ciTBI) or TBI on computed tomography (CT).

METHODS

Using the publicly available Pediatric Emergency Care Applied Research Network TBI data set, we selected infants ≤ 1 year with GCS 14 to 15 who had ISH (defined as hematoma without other signs/symptoms of TBI). CT scans were obtained at the treating physician's discretion. We calculated ISS based on age, hematoma size, and location (range = 0-8) for each patient and calculated the sensitivity and specificity of the score for ciTBI and TBI on CT across a range of ISS cut-points.

RESULTS

We included 1,289 infants ≤ 1 year of whom 462 (36%) had CT performed. Twelve had ciTBI and 59 had TBI on CT. An ISS cutoff ≥ 4 had sensitivity of 100% for ciTBI (95% confidence interval [CI] = 0.74 to 1.0) and TBI with specificity of 0.49 (95% CI = 0.46 to 0.51). An ISS cutoff of ≥5 had a sensitivity of 100% for ciTBI (95% CI = 0.74 to 1.0) and specificity of 0.68 (95% CI = 0.66 to 0.71), but missed three infants with TBI on CT (none of whom required intervention). The receiver operating characteristic curves for clinical score to detect ciTBI and TBI had areas under the curve of 0.916 and 0.807, respectively.

CONCLUSIONS

The ISS accurately stratified risk for ciTBI and TBI on CT in infants with ISH and is a useful tool to help guide clinical decision making.

Patient Race/Ethnicity and Diagnostic Imaging Utilization in the Emergency Department: A Systematic Review

PURPOSE

Diagnostic imaging often is a critical contributor to clinical decision making in the emergency department (ED). Racial and ethnic disparities are widely reported in many aspects of health care, and several recent studies have reported a link between patient race/ethnicity and receipt of imaging in the ED.

METHODS

The authors conducted a systematic review following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, searching three databases (PubMed, Embase, and the Cochrane Library) through July 2020 using keywords related to diagnostic imaging, race/ethnicity, and the ED setting, including both adult and pediatric populations and excluding studies that did not control for the important confounders of disease severity and insurance status.

RESULTS

The search strategy identified 7,313 articles, of which 5,668 underwent title and abstract screening and 238 full-text review, leaving 42 articles meeting the inclusion criteria. Studies were predominately conducted in the United States (41), split between adult (13) and pediatric (17) populations or both (12), and spread across a variety of topics, mostly focusing on specific anatomic regions or disease processes. Most studies (30 of 42 [71.4%]) reported an association between Black, African American, Hispanic, or nonwhite race/ethnicity and decreased receipt of imaging.

CONCLUSIONS

Despite heterogeneity among studies, patient race/ethnicity is linked with receipt of diagnostic imaging in the ED. The strength and directionality of this association may differ by specific subpopulation and disease process, and more efforts to understand potential underlying factors are needed.

Influence of the Fukushima Daiichi Nuclear Power Plant Accident on the Use of Computed Tomography in Children With Mild Head Injuries

Background

Computed tomography (CT) is commonly used in children with mild head injuries. People in Japan are concerned about radiation exposure and radiation-induced cancer because of the Fukushima Daiichi Nuclear Power Plant accident on March 11, 2011. This study investigated whether the accident influenced the use of CT in children with mild head injuries.

Methods

Using the Japan Medical Data Center database, we identified patients aged ≤15 years visiting hospitals because of mild head injuries from January 1, 2008, to December 31, 2013. We excluded patients who were admitted to the hospital or received other medical examinations. Regression discontinuity analysis was used to compare proportions of patients undergoing head CT and having clinically important traumatic brain injury (ciTBI) overlooked before versus after the accident, adjusting for patient characteristics, secular trends, and hospital effect.

Results

Eligible patients (n = 40,440) were classified as visiting the hospital before (n = 11,659) or after (n = 28,781) the accident. The regression discontinuity analysis showed that the accident was associated with a reduction in the proportion of patients undergoing head CT (odds ratio [OR] 0.73; 95% confidence interval [CI], 0.63–0.86), whereas the accident was not associated with an increase in cases where ciTBI was overlooked (OR 0.72; 95% CI, 0.13–4.00).

Conclusions

The use of CT in children with mild head injuries declined after the Fukushima Daiichi Nuclear Power Plant accident. Improving awareness of radiation exposure risks among patients and physicians could reduce unnecessary CT.

Impact of routine S100B protein assay on CT scan use in children with mild traumatic brain injury

OBJECTIVES

To evaluate the impact of implementing a modified Pediatric Emergency Care Applied Research Network (PECARN) rule including the S100B protein assay for managing mild traumatic brain injury (mTBI) in children.

METHODS

A before-and-after study was conducted in a paediatric emergency department of a French University Hospital from 2013 to 2015. We retrospectively included all consecutive children aged 4 months to 15 years who presented mTBI and were at intermediate risk for clinically important traumatic brain injury (ciTBI). We compared the proportions of CT scans performed and of in-hospital observations before (2013-2014) and after (2014-2015) implementation of a modified PECARN rule including the S100B protein assay.

RESULTS

We included 1,062 children with mTBI (median age 4.5 years, sex ratio [F/M] 0.73) who were at intermediate risk for ciTBI: 494 (46.5%) during 2013-2014 and 568 (53.5%) during 2014-2015. During 2014-2015, S100B protein was measured in 451 (79.4%) children within 6 h after mTBI. The proportion of CT scans and in-hospital observations significantly decreased between the two periods, from 14.4 to 9.5% (p=0.02) and 73.9-40.5% (p<0.01), respectively. The number of CT scans performed to identify a single ciTBI was reduced by two-thirds, from 18 to 6 CT scans, between 2013-2014 and 2014-2015. All children with ciTBI were identified by the rules.

CONCLUSIONS

The implementation of a modified PECARN rule including the S100B protein assay significantly decreased the proportion of CT scans and in-hospital observations for children with mTBI who were at intermediate risk for ciTBI.

Neuroimaging in Pediatric Patients with Mild Traumatic Brain Injury: Relating the Current 2018 Centers for Disease Control Guideline and the Potential of Advanced Neuroimaging Modalities for Research and Clinical Biomarker Development

The Center for Disease Control and Prevention (CDC)'s 2018 Guideline for current practices in pediatric mild traumatic brain injury (mTBI; also referred to as concussion herein) systematically identified the best up-to-date practices based on current evidence and, specifically, identified recommended practices regarding computed tomography (CT), magnetic resonance imaging (MRI), and skull radiograph imaging. In this article, we discuss types of neuroimaging not discussed in the guideline in terms of their safety for pediatric populations, their potential application, and the research investigating the future use of certain modalities to aid in the diagnosis and treatment of mTBI in children. The role of neuroimaging in pediatric mTBI cases should be considered for the potential contribution to children's neural and social development, in addition to the immediate clinical value (as in the case of acute structural findings). Selective use of specific neuroimaging modalities in research has already been shown to detect aspects of diffuse brain injury, disrupted cerebral blood flow, and correlate physiological factors with persistent symptoms, such as fatigue, cognitive decline, headache, and mood changes, following mTBI. However, these advanced neuroimaging modalities are currently limited to the research arena, and any future clinical application of advanced imaging modalities in pediatric mTBI will require robust evidence for each modality's ability to provide measurement of the subtle conditions of brain development, disease, damage, or degeneration, while accounting for variables at both non-injury and time-post-injury epochs. Continued collaboration and communication between researchers and healthcare providers is essential to investigate, develop, and validate the potential of advanced imaging modalities in pediatric mTBI diagnostics and management.

The Effect of Patient Observation on Cranial Computed Tomography Rates in Children With Minor Head Trauma

BACKGROUND

Management of children with minor blunt head trauma often includes a period of observation to determine the need for cranial computed tomography (CT). Our objective was to estimate the effect of planned observation on CT use for each Pediatric Emergency Care Applied Research Network (PECARN) traumatic brain injury (TBI) risk group among children with minor head trauma.

METHODS

This was a secondary analysis of a prospective observational study at 10 emergency departments (EDs) in Australia and New Zealand, including 18,471 children < 18 years old, presenting within 24 hours of blunt head trauma, with Glasgow Coma Scale scores of 14 to 15. The planned observation cohort was defined by those with planned observation and no immediate plan for cranial CT. The comparison cohort included the rest of the patients who were either not observed or for whom a decision to obtain a cranial CT was made immediately after ED assessment. The outcome clinically important TBI (ciTBI) was defined as death due to head trauma, neurosurgery, intubation for > 24 hours for head trauma, or hospitalization for ≥ 2 nights in association with a positive cranial CT scan. We estimated the odds of cranial CT use with planned observation, adjusting for patient characteristics, PECARN TBI risk group, history of seizure, time from injury, and hospital clustering, using a generalized linear model with mixed effects.

RESULTS

The cranial CT rate in the total cohort was 8.6%, and 0.8% had ciTBI. The planned observation group had 4,945 (27%) children compared to 13,526 (73%) in the no planned observation group. Cranial CT use was significantly lower with planned observation (adjusted odds ratio [OR] = 0.2, 95% confidence interval [CI] = 0.1 to 0.1), with no difference in missed ciTBI rates. There was no difference in the odds of cranial CT use with planned observation for the group at very low risk for ciTBI (adjusted OR = 0.9, 95% CI = 0.5 to 1.4). Planned observation was associated with significantly lower cranial CT use in patients at intermediate risk (adjusted OR = 0.2, 95% CI = 0.2 to 0.3) and high risk (adjusted OR = 0.1, 95% CI = 0.0 to 0.1) for ciTBI.

CONCLUSIONS

Even in a setting with low overall cranial CT rates in children with minor head trauma, planned observation was associated with decreased cranial CT use. This strategy can be safely implemented on selected patients in the PECARN intermediate- and higher-risk groups for ciTBI.

Reduction of paediatric head CT utilisation at a rural general hospital emergency department

BACKGROUND

Blunt head injury is a common pediatric injury and often evaluated in general emergency departments. It estimated that 50% of children will undergo a head computed tomography (CT), often unnecessarily exposing the child to ionizing radiation. Pediatric academic centers have shown quality improvement (QI) measures can reduce head CT rates within their emergency departments. We aimed to reduce head CT utilization at a rural community emergency department.

METHODS

Children presenting with a complaint of blunt head injury and were evaluated with or without a head CT. Head CT rate was the primary outcome. We developed a series of interventions and presented these to the general emergency department over the duration of the study. The pre and intervention data was analysed with control charts.

RESULTS

The preintervention and intervention groups consisted of 576 children: 237 patients with a median age of 8.0 years and 339 patients with a median age of 9.00 years (p=0.54), respectively. The preintervention HCT rate was 41.8% (95% CI 35.6% to 48.1%) and the postintervention rate was 27.7% (95% CI 23.3% to 32.7%), a decrease of 14.1% (95% CI 6.2% to 21.9%, p=0.0004). During the intervention period, there was a decrease in HCT rate of one per month (OR 0.96, 95% CI 0.92 to 1.00, p=0.07). The initial series of interventions demonstrated an incremental decrease in HCT rates corresponding with a special cause variation.

CONCLUSION

The series of interventions dispersed over the intervention period was an effective methodology and successfully reduced HCT utilisation among children with blunt head injury at a rural community emergency department.

Children With Minor Blunt Head Trauma Presenting to the Emergency Department

In our state-of-the-art review, we summarize the best-available evidence for the optimal emergency department management of children with minor blunt head trauma. Minor blunt head trauma in children is a common reason for emergency department evaluation, although clinically important traumatic brain injuries (TBIs) as a result are uncommon. Cranial computed tomography (CT) scanning is the reference standard for the diagnosis of TBIs, although they should be used judiciously because of the risk of lethal malignancy from ionizing radiation exposure, with the greatest risk to the youngest children. Available TBI prediction rules can assist with CT decision-making by identifying patients at either low risk for TBI, for whom CT scans may safely be obviated, or at high risk, for whom CT scans may be indicated. For clinical prediction rules to change practice, however, they require active implementation. Observation before CT decision-making in selected patients may further reduce CT rates without missing children with clinically important TBIs. Future work is also needed to incorporate patient and family preferences into these decision-making algorithms when the course of action is not clear.

Feasibility and Accuracy of Fast MRI Versus CT for Traumatic Brain Injury in Young Children

BACKGROUND

Computed tomography (CT) is commonly used for children when there is concern for traumatic brain injury (TBI) and is a significant source of ionizing radiation. Our objective was to determine the feasibility and accuracy of fast MRI (motion-tolerant MRI sequences performed without sedation) in young children.

METHODS

In this prospective cohort study, we attempted fast MRI in children <6 years old who had head CT performed and were seen in the emergency department of a single, level 1 pediatric trauma center. Fast MRI sequences included 3T axial and sagittal T2 single-shot turbo spin echo, axial T1 turbo field echo, axial fluid-attenuated inversion recovery, axial gradient echo, and axial diffusion-weighted single-shot turbo spin echo planar imaging. Feasibility was assessed by completion rate and imaging time. Fast MRI accuracy was measured against CT findings of TBI, including skull fracture, intracranial hemorrhage, or parenchymal injury.

RESULTS

Among 299 participants, fast MRI was available and attempted in 225 (75%) and completed in 223 (99%). Median imaging time was 59 seconds (interquartile range 52-78) for CT and 365 seconds (interquartile range 340-392) for fast MRI. TBI was identified by CT in 111 (50%) participants, including 81 skull fractures, 27 subdural hematomas, 24 subarachnoid hemorrhages, and 35 other injuries. Fast MRI identified TBI in 103 of these (sensitivity 92.8%; 95% confidence interval 86.3-96.8), missing 6 participants with isolated skull fractures and 2 with subarachnoid hemorrhage.

CONCLUSIONS

Fast MRI is feasible and accurate relative to CT in clinically stable children with concern for TBI.

Reduction of Computed Tomography Use for Pediatric Closed Head Injury Evaluation at a Nonpediatric Community Emergency Department

OBJECTIVE

The purpose of this study was to determine if implementation of a Pediatric Emergency Care Applied Research Network (PECARN)-based Closed Head Injury Assessment Tool could safely decrease computed tomography (CT) use for pediatric head injury evaluation at a nonpediatric community emergency department (ED).

METHODS

A quality improvement project was initiated at a nonpediatric community ED to implement an institution-specific, PECARN-based Pediatric Closed Head Injury Assessment Tool. Baseline head CT use at the participating ED was determined for children with closed head injury through retrospective chart review from March 2014 through November 2015. Head injury patients were identified using International Classification of Disease (ICD)-9 codes for head injury, unspecified (959.01) and concussion with and without loss of consciousness (850-850.9) until October 2015, after which ICD-9 was no longer used. To identify eligible patients after October 2015, lists of all pediatric patients evaluated at the participating ED were reviewed, and patients were included in the analysis if they had a physician-assigned discharge diagnosis of head injury or concussion. Exclusion criteria were age ≥ 18 years, penetrating head trauma, history of brain tumor, ventriculoperitoneal shunt, bleeding disorder, or presentation > 24 hours postinjury. Medical history, injury mechanism, symptoms, head CT use, and disposition were recorded. Implementation of the Pediatric Closed Head Injury Assessment Tool was achieved through provider education sessions beginning in December 2015 and ending in August 2016. Head CT use was monitored for 12 months postimplementation, from September 2016 through August 2017. Patients were classified into low, intermediate, or high risk for clinically important traumatic brain injury (ciTBI) by chart review. ED length of stay (LOS), disposition, and ED returns within 72 hours were recorded. Categorical variables were compared using chi-square test or Fisher's exact test, and continuous variables, using Kruskal-Wallis test.

RESULTS

A total of 252 children with closed head injury were evaluated preimplementation (March 2014 through November 2015), 132 children were evaluated during implementation (December 2015 through August 2016), and 172 children were evaluated postimplementation (September 2016 through August 2017). Overall CT use decreased from 37.7% (95% confidence interval [CI] = 31.7-43.7) preimplementation to 16.9% (95% CI = 11.3-22.5) postimplementation (p < 0.001). Only 1% (95% CI = 0%-2.9%) of low-risk patients received a head CT postimplementation compared to 22.6% (95% CI = 16.1%-29.1%) preimplementation (p < 0.001). CT use among patients ≥ 24 months decreased from 42.9% (95% CI = 36.5%-49.6%) to 19.6% (95% CI = 13.1%-26.1%; p < 0.001) and remained low and unchanged for patients < 24 months. Transfers to a pediatric trauma center and ED returns within 72 hours were unchanged, while median ED LOS improved from 1.5 to 1.3 hours (p = 0.03). There were no missed ciTBIs after implementation of the guideline.

CONCLUSION

Implementation of the PECARN-based Pediatric Closed Head Injury Assessment Tool reduced head CT use in a nonpediatric ED. The greatest impact was seen among children aged ≥ 24 months at very low risk for ciTBI.

Reducing the Cranial CT Rate for Pediatric Minor Head Trauma at Three Community Hospitals

OBJECTIVE

Efforts to reduce the rate of computerized cranial tomography (CT) in pediatric patients with minor head trauma (MHT) have focused on academic medical centers. However, community hospitals deliver the majority of pediatric emergency care. We aimed to reduce cranial CT utilization in patients presenting with MHT at 3 community hospital emergency departments (EDs).

METHODS

Multidisciplinary stakeholder teams at each site oversaw the quality improvement effort, which included education about an evidence-based guideline for MHT and individual provider feedback on CT rates. Given the variation in hospital structure, we tailored the specifics of the intervention to each site. We used statistical process control methodology to measure CT rates over time. The primary balancing measure was returned to the ED within 72 hours with clinically important traumatic brain injury.

RESULTS

We included 3,215 pediatric ED visits for MHT: 1,253 in the baseline period and 1,962 in the intervention period. The CT rate dropped from 18% in the baseline period to 13% in the intervention period, a 28% relative reduction. Pediatric providers saw 72% of the intervention period encounters and drove this reduction. There was no increase in the number of children who returned to their local ED within 72 hours with clinically important traumatic brain injury.

CONCLUSIONS

We safely reduced the proportion of children with MHT who received a cranial CT through a multicenter community ED quality improvement initiative. We did not see an increase in missed clinically important traumatic brain injury.