Pediatric injuries: prevention to resolution

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.

Embolization for pediatric trauma

BACKGROUND

The management of pediatric trauma with trans-arterial embolization is uncommon, even in level 1 trauma centers; hence, there is a dearth of literature on this subject compared to the adult experience.

OBJECTIVE

To describe a single-center, level 1 trauma center experience with arterial embolization for pediatric trauma.

MATERIALS AND METHODS

A retrospective review was performed to identify demographics, transfusion requirements, pre-procedure imaging, procedural details, adverse events, and arterial embolization outcomes over a 19-year period. Twenty children (age 4.5 months to 17 years, median 13.5 years; weight 3.6 to 108 kg, median 53 kg) were included. Technical success was defined as angiographic resolution of the bleeding-related abnormality on post-embolization angiography or successful empiric embolization in the absence of an angiographic finding. Clinical success was defined as not requiring additional intervention after embolization.

RESULTS

Seventy-five percent (n=15/20) of patients required red blood cell transfusions prior to embolization with a mean volume replacement 64 ml/kg (range 12-166 ml/kg) and the median time from injury to intervention was 3 days (range 0-16 days). Technical success was achieved in 100% (20/20) of children while clinical success was achieved in 80% (n=16/20). For the 4 children (20%) with continued bleeding following initial embolization, 2 underwent repeat embolization, 1 underwent surgery, and 1 underwent repeat embolization and surgery. Mortality prior to discharge was 15% (n=3). A post-embolization mild adverse event included one groin hematoma, while a severe adverse event included one common iliac artery pseudoaneurysm requiring open surgical ligation.

CONCLUSIONS

In this single-center experience, arterial embolization for hemorrhage control in children after trauma is feasible but can be challenging and the clinical failure rate of 20% in this series reflects this complexity. Standardization of pre-embolization trauma assessment parameters and embolic techniques may improve outcomes.

Fibrin Glue Repair of a Traumatic Rectovaginal Fistula in a Pediatric Patient

BACKGROUND

Rectovaginal fistulas are often associated with obstetric trauma and present with leakage of stool or flatus from the vagina. They are often repaired via fistulaectomy, but sometimes more complex repairs are needed. There are limited data regarding success using fibrin glue to close the tract.

CASE

A developmentally delayed pediatric patient presented with right hip pain. Imaging studies identified a hairpin penetrating the rectovaginal space. The hairpin was removed during an exam under anesthesia, and the subsequent rectovaginal fistula was closed with fibrin glue. Closure of the tract has persisted for more than 1 year without need for further intervention.

SUMMARY AND CONCLUSION

Fibrin glue may be a minimally invasive and safe approach for rectovaginal fistulas in the pediatric patient.

Contemporary Management of Pediatric Blunt Splenic Trauma: A National Trauma Databank Analysis

PURPOSE

To quantify changes in the management of pediatric patients with isolated splenic injury from 2007 to 2015.

MATERIALS AND METHODS

Patients under 18 years old with registered splenic injury in the National Trauma Data Bank (2007-2015) were identified. Splenic injuries were categorized into 5 management types: nonoperative management (NOM), embolization, splenic repair, splenectomy, or a combination therapy. Linear mixed models accounting for confounding variables were used to examine the direct impact of management on length of stay (LOS), intensive care unit (ICU) days, and ventilator days.

RESULTS

Of included patients (n = 24,128), 90.3% (n = 21,789), 5.6% (n = 1,361), and 2.7% (n = 640) had NOM, splenectomy, and embolization, respectively. From 2007 to 2015, the rate of embolization increased from 1.5% to 3.5%, and the rate of splenectomy decreased from 6.9% to 4.4%. Combining injury grades, NOM was associated with the shortest LOS (5.1 days), ICU days (1.9 days), and ventilator days (0.5 day). Moreover, splenectomy was associated with longer LOS (10.1 days), ICU days (4.5 days), and ventilator days (2.1 days) than NOM. The average failure rate of NOM was 1.5% (180 failures/12,378 cases). Average embolization failure was 1.3% (6 failures/456 cases). Splenic artery embolization was associated with lower mortality than splenectomy (OR: 0.10, P <.001). No statistically significant difference was observed in mortality between embolization and NOM (OR: 0.96, P = 1.0).

CONCLUSIONS

In pediatric splenic injury, NOM is the most utilized and associated with favorable outcomes, most notably in grades III to V pediatric splenic injury. If intervention is needed, embolization is effective and increasingly utilized most significantly in lower grade injuries.

Test characteristics of focused assessment with sonography for trauma (FAST), repeated FAST, and clinical exam in prediction of intra-abdominal injury in children with blunt trauma

PURPOSE

In children with blunt abdominal trauma (BAT), focused assessment of sonography in trauma (FAST) has been reported with low sensitivity, on the whole, in the detection of intra-abdominal injuries (IAI). The aim of the present study was to assess test characteristics of FAST using different strategies including repeated FAST (reFAST), and physical exam findings.

METHODS

This retrospective study evaluated BAT pediatric patients with stable hemodynamics who underwent computed tomography (CT). Demographic data, initial physical examination, and results of FAST, reFAST (if done), and CT imaging were recorded. Different strategies of FAST were cross-tabulated with CT as the gold standard and test characteristics including sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy were interpreted.

RESULTS

129 patients with a mean age of 8.6 ± 4.7 were studied and 74% were male. Comparing CT-positive and -negative groups, from the demographic and clinical findings, only positive physical exam (tenderness or ecchymosis) was significantly higher in the CT-positive group (59% vs. 17%; p < 0.01). In a multivariate analysis, positive FAST modality and clinical exam remained independent predictors for a positive CT result (likelihood ratios of 34.6 and 6.4, respectively). Out of the different diagnostic strategies for the prediction of IAI, the best overall performance resulted from the FAST-reFAST-tenderness protocol with sensitivity, specificity, PPV, NPV, and accuracy of 87%, 77%, 70%, 91%, and 81%.

CONCLUSION

For children with blunt abdominal trauma, physical examination plus FAST and reFAST as needed, seems to have reasonable sensitivity, specificity, and accuracy in detecting intra-abdominal injuries and may reduce the need for CT scans.

A comparison of the management of blunt splenic injury in children and young people-A New South Wales, population-based, retrospective study

The importance and safety of non-operative management (NOM) of Blunt Splenic Injury (BSI) has been established in children and adults over recent decades. However, studies have shown higher operation rates in adults. There is international evidence that when children are managed in adult centres, operation rates are higher while adolescents in paediatric centres, are operated on in line with paediatric guidelines. This difference between children and young adults, and the factors responsible, have not been examined in New South Wales (NSW).

OBJECTIVE

To use NSW hospital and mortality data to compare the characteristics of BSI in patients aged 0-16 to those aged 17-25, and determine factors related to operative management (OM) and splenic salvage in each group.

METHODS

Patients age 0-25 between July 2000 and December 2011, with a diagnosis of BSI, were identified in the NSW Admitted Patient Data Collection, and linked to deaths data from Registry of Births Deaths and Marriages and Bureau of Statistics. Operation rate was compared between the two groups. Univariable analysis was used to determine factors associated with OM. Multivariable logistic regression with stepwise elimination was then performed to determine likelihood of OM according to age group, adjusting for potential confounders.

RESULTS

1986 cases were identified, with 422 (21.2%) managed operatively - 101/907 children (11.1%) and321/1079 (29.7%)young adults(p<0.001). Of these, 59 (58%) children underwent splenectomy compared with 233 (73%) young adults (p<0.001). OM increased significantly after the age of 12 (p=0.03), and the percentage almost tripled in the teenage years, coinciding with a higher proportion admitted to adult centres. OM doubled again in young adults(p<0.001), all of whom were managed away from paediatric centres. On multivariable analysis, factors significantly associated with operation included age over 16 (OR 2.82, 95%CI 2.10-3.81), splenic injury severity, associated thoracic, liver, pancreatic and hollow viscus injury, and blood transfusion.

CONCLUSION

While Paediatric Surgeons have wholeheartedly adopted non-operative management, away from paediatric centres, it is possible children and young people in NSW are undergoing operation unnecessarily. Further evaluation of the surgeon attitudes and institutional factors involved in the management of injured children and young people within the broad NSW trauma system is required.

The promise of organ and tissue preservation to transform medicine

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Management of paediatric splenic injury in the New South Wales trauma system

Since the 1980's, paediatric surgeons have increasingly managed blunt splenic injury (BSI) in children non-operatively. However, studies in North America have shown higher operation rates in non-paediatric centres and by adult surgeons. This association has not been examined elsewhere.

OBJECTIVE

To investigate the management of BSI in New South Wales (NSW) children, to determine the patient and hospital factors related to the odds of operation. Secondarily, to investigate whether the likelihood of operation varied by year.

METHODS

Children age 0-16 admitted to a NSW hospital between July 2000 and December 2011 with a diagnosis of BSI were identified in the NSW Admitted Patient Data Collection, and linked to deaths data from Registry of Births Deaths and Marriages, and Bureau of Statistics. The operation rate was calculated and compared between different hospital types. Univariable analysis was used to determine patient and hospital factors associated with operative management. The difference in the odds of operation between the oldest data (July 2000-December 2005) and most recent (January 2006-December 2011) was also examined. Multivariable logistic regression with stepwise elimination was then performed to determine likelihood of operative management according to hospital category and era, adjusting for potential confounders.

RESULTS

955 cases were identified, with 101(10.6%) managed operatively. On multivariable analysis, factors associated with operation included age (OR 1.11, 95% CI 1.01-1.18, p<0.05), massive splenic disruption (OR 3.10, 95% CI 1.61-6.19, p<0.001), hollow viscus injury (OR 11.03, 95% CI 3.46-34.28, p<0.001) and transfusion (OR 7.70, 95% CI 4.54-13.16, p<0.001). Management outside a paediatric trauma centre remained significantly associated with operation, whether it be metropolitan adult trauma centre (OR 4.22 95% CI 1.70-10.52, p<0.01), rural trauma centre (OR 3.72 95% CI 1.83-7.83, p<0.001) or metropolitan local hospital (OR 5.23, 95% CI 1.22-18.93 p<0.05). Comparing the 2 eras, the overall operation rate fell, although not significantly, from 12.9% to 8.7% (OR 1.3, 95% CI 0.89-243 p=0.13) CONCLUSION: While Paediatric Surgeons have wholeheartedly adopted non-operative management, away from paediatric centres, children in NSW are still being operated on for BSI unnecessarily. While the factors at play may be complex, further evaluation of the management and movement of injured children within the broad NSW trauma system is required.

Identification of blunt abdominal injuries in children

BACKGROUND

The use of computed tomography (CT) to screen for injuries in pediatric blunt abdominal trauma (BAT) is increasing, concurrent with increasing concern over long-term risk of radiation-associated malignancies. We proposed to determine features that could be identified in the early assessment of these patients, which can predict the likelihood of clinically important intra-abdominal injuries warranting imaging by CT. We further queried if these were discrepant from factors associated with the decision to obtain an abdominal CT.

METHODS

Data of patients admitted with BAT to one of two Level I pediatric trauma centers were reviewed retrospectively. Clinical, laboratory, radiographic, and epidemiologic data were collected. Logistic regression was used to determine associations between pre-CT findings and ultimate diagnoses of "notable" or "clinically important" intra-abdominal injuries. Similar analyses were performed to determine which findings were associated with actually receiving an abdominal CT scan.

RESULTS

Of 571 patients, 37% had a notable intra-abdominal injury and 18% a clinically important intra-abdominal injury. After adjusting for all covariates, hematuria (gross or microscopic), elevated serum alanine aminotransferase, and documentation of clinically concerning abdominal findings upon examination remained significant predictors (odds ratio (OR), 3.5; 95% confidence interval [CI], 1.8-6.8; OR, 10.9; 95% CI, 2.5-47, respectively) of a clinically important injury. Undergoing a CT head and the presence of hematuria were significantly associated with obtaining a CT of the abdomen (OR, 3.4; 95% CI, 1.5-7.7; OR, 2.9; 95% CI, 1.1-7.3, respectively), while concerning abdominal findings and decreased Glasgow Coma Scale (GCS) score were not.

CONCLUSION

Clinical variables may be used to predict intra-abdominal injuries after pediatric BAT that may warrant imaging with CT scanning. Combined with findings from similar studies, it may be possible to derive and validate a decision-making rule both sensitive and specific in predicting the need for abdominal CT scanning in these patients.

LEVEL OF EVIDENCE

Prognostic study, level III.

Test characteristics of focused assessment of sonography for trauma for clinically significant abdominal free fluid in pediatric blunt abdominal trauma

OBJECTIVES

Focused assessment of sonography in trauma (FAST) has been shown useful to detect clinically significant hemoperitoneum in adults, but not in children. The objectives were to determine test characteristics for clinically important intraperitoneal free fluid (FF) in pediatric blunt abdominal trauma (BAT) using computed tomography (CT) or surgery as criterion reference and, second, to determine the test characteristics of FAST to detect any amount of intraperitoneal FF as detected by CT.

METHODS

This was a prospective observational study of consecutive children (0-17 years) who required trauma team activation for BAT and received either CT or laparotomy between 2004 and 2007. Experienced physicians performed and interpreted FAST. Clinically important FF was defined as moderate or greater amount of intraperitoneal FF per the radiologist CT report or surgery.

RESULTS

The study enrolled 431 patients, excluded 74, and analyzed data on 357. For the first objective, 23 patients had significant hemoperitoneum (22 on CT and one at surgery). Twelve of the 23 had true-positive FAST (sensitivity = 52%; 95% confidence interval [CI] = 31% to 73%). FAST was true negative in 321 of 334 (specificity = 96%; 95% CI = 93% to 98%). Twelve of 25 patients with positive FAST had significant FF on CT (positive predictive value [PPV] = 48%; 95% CI = 28% to 69%). Of 332 patients with negative FAST, 321 had no significant fluid on CT (negative predictive value [NPV] = 97%; 95% CI = 94% to 98%). Positive likelihood ratio (LR) for FF was 13.4 (95% CI = 6.9 to 26.0) while the negative LR was 0.50 (95% CI = 0.32 to 0.76). Accuracy was 93% (333 of 357, 95% CI = 90% to 96%). For the second objective, test characteristics were as follows: sensitivity = 20% (95% CI = 13% to 30%), specificity = 98% (95% CI = 95% to 99%), PPV = 76% (95% CI = 54% to 90%), NPV = 78% (95% CI = 73% to 82%), positive LR = 9.0 (95% CI = 3.7 to 21.8), negative LR = 0.81 (95% CI = 0.7 to 0.9), and accuracy = 78% (277 of 357, 95% CI = 73% to 82%).

CONCLUSION

In this population of children with BAT, FAST has a low sensitivity for clinically important FF but has high specificity. A positive FAST suggests hemoperitoneum and abdominal injury, while a negative FAST aids little in decision-making.

Is sonography reliable for the diagnosis of pediatric blunt abdominal trauma?

BACKGROUND

Computerized tomography (CT) is considered as the imaging study of choice for blunt abdominal trauma in children. Nevertheless, recent investigations clearly indicate an increased risk of cancer in children exposed to radiation during abdominal spiral CT. Therefore, alternative strategies should be used for the diagnosis and surgical decision making in blunt abdominal trauma in children.

METHODS

Retrospective analysis included all children with intraabdominal organ rupture after blunt abdominal trauma. Patients were diagnosed by a standardized emergency protocol that included primary clinical assessment and repeated ultrasound but not routine CT. Efficacy of abdominal ultrasound was evaluated in regard to safe diagnosis and appropriate surgical decision making.

RESULTS

The study included 35 children with intraabdominal organ rupture diagnosed by ultrasound. One fifth (7/35) of the patients were polytraumatized, whereas 28 of 35 had an isolated blunt abdominal trauma. All patients underwent immediate ultrasound scanning of the abdomen and retroperitoneal space. Two patients were immediately operated because of hemodynamically instability. Four of 7 polytraumatized patients and 7 of 28 patients with isolated blunt abdominal trauma were additionally diagnosed by spiral CT. Only 1 patient underwent subsequent surgery because of the findings in the CT. Ultrasound was effective in more than 97% (34/35) of the patients for diagnosis and appropriate surgical decision making.

CONCLUSION

Ultrasound combined with clinical assessment presents an effective method for safe diagnosis and appropriate surgical decision making in pediatric blunt abdominal trauma. Selected cases with polytrauma and/or unequivocal findings in the ultrasound should undergo abdominal CT. Patients requiring abdominal CT should have an anticipated benefit that exceeds the radiation risk. The importance of repeated clinical assessment cannot be overstated.

Vaginal laceration as a result of blunt vehicular trauma

BACKGROUND

Sexual abuse often is the primary diagnosis considered when prepubertal girls present with vaginal trauma. Although sexual abuse is very concerning and should remain high in the differential diagnosis, a variety of accidental injuries also can cause genital injury.

CASE

A 5-year-old girl presented to the emergency department with genital bleeding after a vehicle rolled over her pelvis. She had isolated vaginal lacerations on exam.

SUMMARY AND CONCLUSION

Extreme pelvic compression is an adequate mechanism of injury in a child presenting with vaginal laceration.

Interventional radiology for paediatric trauma

Paediatric interventional radiology plays a cornerstone role in the management of paediatric trauma. In the acute setting, interventional radiology techniques allow minimally invasive control of haemorrhage or re-establishment of blood flow. Percutaneous stenting and drainage can allow disruptions in urinary or biliary systems to heal without the need for further surgery. Interventional radiology techniques also have a significant role in treating delayed complications of trauma, including embolization of arterial pseudoaneurysms and pulmonary embolism prophylaxis in individuals immobilized due to the trauma or its operative treatment.

Blunt splenic injuries in the adolescent trauma population: the role of angiography and embolization

BACKGROUND

Splenic artery embolization (SAE) improves non-operative splenic salvage rates in adults, but its utility and safety in the pediatric population is less well defined.

OBJECTIVE

Because adolescent trauma patients are often triaged to adult trauma centers, we were interested in evaluating SAE in this particular population. We hypothesize that angiography and embolization is a safe and effective adjunct to non-operative management in the adolescent population.

METHODS

A retrospective review of all patients aged 13-17 years admitted to our Level I Trauma Center with blunt splenic injury from 1997-2005 was performed. We reviewed patient demographics, operative reports, admission, and follow-up abdominal computed tomography (ACT) results, angiographic reports, and patient outcomes.

RESULTS

A total of 97 patients were reviewed. Eighteen patients underwent immediate surgery, and 79 of the remaining patients had planned non-operative management. Of those participating in non-operative management, 35/79 (44%) were initially observed and 44/79 (56%) underwent initial angiography, 23/44 having embolization. Patients in the embolization group had an overall high grade of injury (American Association for the Surgery of Trauma mean grade 3.3, SD 0.6). The overall splenic salvage rate was 96% (76/79) in the non-operative management group; 100% splenic salvage was seen in the observational group; 100% salvage was also seen in patients with negative angiography, and 87% salvage (20/23) in the splenic artery embolization group.

CONCLUSION

Splenic artery embolization may be a valuable adjunct in adolescent blunt splenic injury, especially in higher grade injuries or with evidence of splenic vascular injury on ACT.

Pediatric trauma deaths are predominated by severe head injuries during spring and summer

Background

Trauma is the most prevalent cause of death in the young. Insight into cause and time of fatal pediatric and adolescent trauma is important for planning trauma care and preventive measures. Our aim was to analyze cause, severity, mode and seasonal aspects of fatal pediatric trauma.

Methods

Review of all consecutive autopsies for pediatric fatal trauma during a 10-year period within a defined population.

Results

Of all pediatric trauma deaths (n = 36), 70% were males, with the gender increasing with age. Median age was 13 years (range 2–17). Blunt trauma predominated (by road traffic accidents) with most (n = 15; 42%) being "soft" victims, such as pedestrians/bicyclist and, 13 (36%) drivers or passengers in motor vehicles.

Penetrating trauma caused only 3 deaths. Prehospital deaths (58%) predominated. 15 children (all intubated) reached hospital alive and had severely deranged vital parameters: 8 were hypotensive (SBP < 90 mmHg), 13 were in respiratory distress, and 14 had GCS < 8 on arrival. Emergency procedures were initiated (i.e. neurosurgical decompression, abdominal surgery or pelvic fixation for hemorrhage) in 12 patients. Probability of survival (Ps) was < 33% in over 75% of the fatalities. A bimodal death pattern was evident; the initial peak by CNS injuries and exsanguinations, the latter peak by CNS alone. Most fatalities occurred during spring (53%) or summertime (25%).

Conclusion

Fatal pediatric trauma occurs most frequently in boys during spring/summer, associated with severe head injuries and low probability of survival. Preventive measures appear mandated in order to reduce this mortality in this age group.

Image monitoring for an intraperitoneal bleeding model of pigs using electrical impedance tomography

Current medical imaging techniques are not effective for timely detection of internal hemorrhage when the bleeding is slow and in small quantities. In this study, electrical impedance tomography (EIT) was applied to monitor the intraperitoneal bleeding of an animal model. Five healthy pigs three months old were used. The process of intraperitoneal bleeding was simulated with the injection of anticoagulated blood which was controlled by an electronic syringe pump. The injected rate was no more than 100 ml h(-1) and the total injection volumes ranged from 300 ml to 500 ml. Sixteen electrodes were attached to the abdomen and used for electrical current excitation and surface voltage measurement. Dynamic changes in impedance distribution within the abdomen were calculated by the back-projection algorithm and a series of EIT images were displayed in a unified range. The monitoring was performed with EIT at a rate of one frame per second and continued for at least 4 h. Intraperitoneal blood volume changes could be identified by inspection of consecutive EIT images during the progression of blood injection. 30 ml of blood in the peritoneum could be detected. EIT was shown to be a promising technique for continuous monitoring of intraperitoneal bleeding over periods of time.

Emergency department evaluation and management of blunt abdominal trauma in children

PURPOSE OF REVIEW

To discuss the emergency department evaluation and management of children with blunt abdominal trauma. The review will focus on both the clinical data that can help reduce the use of computed tomography in the evaluation of patients with blunt abdominal trauma and the evidence for the increased use of nonoperative management of patients with blunt abdominal trauma.

RECENT FINDINGS

We will examine the recent literature focusing on the utility of physical examination, laboratory data and imaging (both ultrasonography and computed tomography) in detecting intraabdominal injury.

SUMMARY

Recent research suggests that physical examination in combination with bedside ultrasonography may identify children at risk for intraabdominal injury. Screening laboratory data appears to be less sensitive to detect these injuries, but is useful in selected patients. Nonoperative management is appropriate in a majority of cases. Further research is needed to determine which low-risk patients with abdominal trauma can be managed with minimal or no exposure to radiation in the computed tomography scanner.