Initial Trauma Evaluation Research Articles

Lung ultrasonography underdiagnoses clinically significant pneumothorax

BackgroundUltrasonography for trauma is an integral part of the Advanced Trauma Life Support algorithm and supported extensively in the literature. The reliability of chest ultrasonography as a screening examination for pneumothorax during initial trauma evaluation is unclear. We performed a prospective study where we hypothesized that chest ultrasonography would have low sensitivity for detecting clinically significant pneumothorax. MethodsA prospective observational analysis of patients with blunt chest trauma at a level 1 trauma center was performed. Patients included had supine chest radiography and chest ultrasonography performed prior to intervention as well as confirmatory computed tomographic imaging. All chest ultrasonography was performed in the trauma bay by a registered sonographer. All imaging was evaluated by an attending trauma surgeon and radiologist in real time. ResultsOf 2,185 patients screened with a diagnosis of blunt thoracic trauma, 1,489 patients had chest radiography, chest ultrasonography, and confirmatory computed tomography and were included for analysis. Patients were 71% male, with median age of 42 years, and mean Injury Severity Score of 6. The sensitivity of chest ultrasonography to detect pneumothorax was low. Chest ultrasonography had a false negative rate of 72% (n = 58), with 22% (n = 13) undergoing tube thoracostomy. Patients with false negative examinations had lower initial O2 saturation and systolic blood pressure and were more likely to have rib fractures compared with true negative chest ultrasonography examinations. ConclusionChest ultrasonography performed on initial trauma evaluation has low sensitivity with a high rate of false negative examinations. Because many of these false negative results are clinically significant requiring thoracostomy, using chest ultrasonography alone to screen for pneumothorax should be done with caution.

Traumatic spinal injury patterns of on vs. off-road motorcycle crashes

Objective Two wheel motorized vehicles used in both street transportation and recreation are a common cause of severe injury in the United States (US). To date, there has been limited data describing the spinal injury patterns among these motorcycle injury patients in the US. The goal of this study is to characterize and compare differences in specific injury patterns of patients sustaining traumatic spinal injuries after motocross (off-road) and street bike (on-road) collisions in the southwestern US at a Level I Trauma Center. Methods Trauma registry data was queried for patients sustaining a spinal injury after motorcycle collision from 2010 to 2019 at a single Level I Trauma Center. Computed tomography (CT) scan and magnetic imaging resonance imaging (MRI) reports from initial trauma evaluation were reviewed and data was manually obtained regarding injury morphology and location. Results A total of 1798 injuries were identified in 549 patients who sustained a motorcycle collision, specifically 67 off-road and 482 on-road motorcycle patients. Off-road motorcycle patients were found to be significantly younger (34.75 vs. 42.66, p = 0.00015). A total of 46.2% of the off-road injuries were determined to be from compression mechanisms, compared to 32.9% in the on-road cohort (p = 0.0027). The on-road cohort was more likely to have an injury classified as insignificant, such as transverse and spinous process fractures (60.1% vs. 42.5%, p = 00.25). There was no significant difference in regards to junctional, mobile, and semirigid spine segments between the two cohorts. Conclusions Different fracture patterns were seen between the off-road and on-road motorcycle cohorts. Off road motorcyclists experienced significantly more compression and translational injuries, while on road motorcyclists experienced more frequent insignificant injury patterns. Data on the different fracture patterns may help professionals develop safety equipment for motorcyclists.

Understanding Chest CT Scan Usage Among Adolescent Blunt Trauma Patients at Adult Trauma Centers.

The utility of chest computed tomography (CCT) is not well established in the diagnostic algorithm of adolescent blunt trauma patients. Our study's aim was to review CCT usage in the initial evaluation of adolescent blunt trauma. We retrospectively reviewed adolescent blunt trauma patients treated at our urban level 1 adult trauma center from 2015 to 2019. Our primary outcome was the rate of positive CCT findings. Univariate and multivariate logistic regression analyses were performed. There were 288 patients that met our inclusion criteria and 153 positive CCT and 135 negative CCT. There was no statistically significant difference between both groups in terms of age, gender, and race. Those with a positive CCT were found to have a statistically significant higher ISS than the negative CCT group (20.6 ± 12.3 vs 12.3 ± 7.6; P < .01). Those with a positive CCT were more likely to have a GCS <15 (40% vs 25%), have a positive CXR (38% vs 2%), have chest pain (16% vs 7%), and have an abnormal chest exam (27% vs 7%) than those with a negative CCT (P < .01). On multivariate analysis, positive CXR (P < .05, OR = 13.96) and ISS (P < .05, OR = 3.10) were independently associated with a positive CCT. While CCT may provide valuable information, clinical exam coupled with low-ionizing radiographic imaging (i.e., CXR) may sufficiently identify chest trauma after blunt mechanisms. This shift in management can potentially reduce the risk of radiation without compromising the care of adolescent trauma patients at adult trauma centers.

Delayed Traumatic Intracerebral Hematoma: A Pathophysiological Classification and Literature Review.

Delayed traumatic intracerebral hematoma (DTICH) is a relatively common occurrence after a traumatic brain injury (TBI). Several case series have been performed to study DTICH, many of which offer different definitions of DTICH. Some definitions involve a delayed progression of an existing hemorrhage, and others involve a de novo intracerebral hematoma that was not evident on the initial trauma evaluation. We propose a classification system for DTICH that accounts for the subtleties in the clinical manifestation and pathophysiology of the different types of DTICH, with the ultimate goal of providing strategies to prevent and manage DTICH. Based on the senior author's clinical experience, we generated a classification system for DTICH, and each type of DTICH was illustrated with a case. We defined type 1A (case 1A), the classic presentation of DTICH as predominantly characterized in the literature, as an intracerebral hematoma unseen on initial computed tomography imaging that typically develops five days to one week following blunt or penetrating head trauma. We defined type 1B (case 1B) as a hematoma that forms after at least one week following trauma in areas of the brain initially hemorrhage-free. We defined type 2 (case 2) as a hematoma that develops rapidly following a surgical evacuation of a different hematoma. We defined type 3 (case 3) as a hematoma that develops after a traumatic head injury in areas of non-hemorrhagic contusion, usually frontal or temporal. A literature review was performed using select terms on PubMed to find articles related to DTICH, excluding articles describing DTICH from an underlying vascular injury. After performing the literature review and screening articles by title and/or abstract, a total of 79 articles were found to meet the inclusion and exclusion criteria. We recorded which type of DTICH from our classification system best correlated with the articles in our literature review. Taken together with results from the literature, the proposed classification system is based on the senior author's clinical experience. Overall, DTICH is a relatively common occurrence after head trauma, and our pathophysiologic classification has the potential to help outline future studies to recognize and prevent the development of DTICH.

Blunt Cerebrovascular Injury in Pediatric Hanging Victims.

Incidence of blunt cerebrovascular injury (BCVI) following hanging in the pediatric population is ill-defined. Current guidelines recommend screening imaging during the initial trauma evaluation. Necessity of screening is questioned given BCVI is considered rare after hanging, especially when asymptomatic. This study aims to elucidate the incidence of BCVI in pediatric hangings and determine the value of radiographic work-up. A retrospective cohort study was performed of pediatric hangings reported to the National Trauma Data Bank (NTDB), 2017-2019. Imaging, diagnoses, and findings suggestive of BCVI, such as Glasgow Coma Scale (GCS) ≤8, presence of cervical injury, and soft tissue injury were considered. Statistical analysis was carried out to compare incidence. 197 patients met study criteria, with 179 arriving in the trauma bay with signs of life. BCVI incidence was 5.6% (10 of 179). Computed Tomography Angiography (CTA) of the neck was the only reported screening modality in this data set. A CTA was completed in 46% of the cases. BCVI incidence following pediatric hanging is more common than previously thought. Less than half of patients had a CTA reported in this cohort. This may result in an underestimate. Given the potentially devastating consequences of a missed BCVI, the addition of CTA to initial work-up may be worthwhile to evaluate for cervical vascular injury, but further studies into the outcomes of children who do receive prophylactic therapy are needed.

Hispanic Farmers Experience Shorter EMS Response Times but Longer Emergency Department Length of Stay Following Occupational Injuries.

Agriculture has the highest rate of fatal injuries by sector. Hispanic workers also experience more fatal work injuries than every other minority group combined. Pre-hospital and initial trauma evaluation represent an important marker to understand the impact of a trauma system. We sought to investigate whether Hispanic agricultural workers in the United States (US) experience disparities following traumatic occupational injuries in terms of pre-hospital and emergency department care. We retrospectively analyzed the National Trauma Data Bank from 2012-2016 to understand differences between Hispanic and non-Hispanic farmers in Emergency Medical Services (EMS) response and transport times (minutes), transport mode, transfer rates, presentation to University or Level I trauma hospitals, Injury Severity Scores (ISS), length of stay (LOS) in the emergency department (ED, minutes) or hospital (days), need for the operating room (OR), admittance to the Intensive Care Unit (ICU), and mortality. A total of 6,161 farmers were included in our analyses (median age 47years, females 7.0%). Multivariable analyses indicate differences regarding EMS response, EMS transport, and LOS in the ED. Rates of admission to the ICU, surgical operations, days on a ventilator, discharge from the hospital with supportive care, and mortality did not differ between groups. Non-Hispanic patients have longer median EMS response and total transport times. Hispanic patients have longer median LOS in the ED. However, the lack of significant differences in management variables other than EMS times and ED LOS indicate an equitable delivery of trauma care once patients were transferred from the ED.

Analysis of Admission Thromboelastogram Profiles in 1369 Male and Female Trauma Patients

IntroductionRecent studies have demonstrated a hypercoagulable thromboelastrogram (TEG) in female trauma patients compared with males, conferring a possible survival advantage. We hypothesized that TEG profiles would reveal a relative hypercoagulable state in female compared with male trauma patients. MethodsA prospective review was conducted on all adult trauma patients admitted to the trauma service at an American College of Surgeons–verified level I trauma center from December 2019 to June 2021 who, per our institutional protocol, received a thrombelastotgraphy on their initial arrival to the trauma center if classified as a level I or II trauma activation. The thromboelastography values of male and female trauma patients were compared as the primary outcome variables of interest. The secondary outcomes investigated were hospital length of stay, surgical interventions, and ventilatory requirement. ResultsA total of 1369 patients met inclusion criteria, with 878 (64.1%) male and 491 (35.9%) female. Female patients had a higher median alpha angle (74.8 versus 72.6°, P < 0.001), maximum amplitude (69.3 versus 66.2 mm, P < 0.001), and shorter median K time (1.0 versus 1.2 s, P < 0.001). Female patients had a shorter hospital length of stay (4 versus 5 d, P < 0.001), had a lower rate of surgical intervention (14.6% versus 25.5%, P < 0.001), and had lower rates of mechanical ventilation (19.3% versus 39.5%, P < 0.001). ConclusionsFemale trauma patients were found to have hypercoagulable indices on TEG at the time of initial trauma evaluation compared with males. Intrinsic differences in sex coagulation profiles should be further investigated to optimize modern resuscitation strategies.

Excluding Hollow Viscus Injury for Abdominal Seat Belt Sign Using Computed Tomography

Abdominal seat belt sign (SBS) has historically entailed admission and observation because of the diagnostic limitations of computed tomography (CT) imaging and high rates of hollow viscus injury (HVI). Recent single-institution, observational studies have questioned the utility of this practice. To evaluate whether a negative CT scan can safely predict the absence of HVI in the setting of an abdominal SBS. This prospective, observational cohort study was conducted in 9 level I trauma centers between August 2020 and October 2021 and included adult trauma patients with abdominal SBS. Inclusion in the study required abdominal CT as part of the initial trauma evaluation and before any surgical intervention, if performed. Results of CT scans were considered positive if they revealed any of the following: abdominal wall soft tissue contusion, free fluid, bowel wall thickening, mesenteric stranding, mesenteric hematoma, bowel dilation, pneumatosis, or pneumoperitoneum. Presence of HVI diagnosed at the time of operative intervention. A total of 754 patients with abdominal SBS had an HVI prevalence of 9.2% (n = 69), with only 1 patient with HVI (0.1%) having a negative CT (ie, none of the 8 a priori CT findings). On bivariate analysis comparing patients with and without HVI, there were significant associations between each of the individual CT scan findings and the presence of HVI. The strongest association was found with the presence of free fluid, with a more than 40-fold increase in the likelihood of HVI (odds ratio [OR], 42.68; 95% CI, 20.48-88.94; P < .001). The presence of free fluid also served as the most effective binary classifier for presence of HVI (area under the receiver operator characteristic curve [AUC], 0.87; 95% CI, 0.83-0.91). There was also an association between a negative CT scan and the absence of HVI (OR, 41.09; 95% CI, 9.01-727.69; P < .001; AUC, 0.68; 95% CI, 0.66-0.70). The prevalence of HVI among patients with an abdominal SBS and negative findings on CT is extremely low, if not zero. The practice of admitting and observing all patients with abdominal SBS should be reconsidered when a high-quality CT scan is negative, which may lead to significant resource and cost savings.

Translator use not associated with longer time to pain medication in initial evaluation of low-severity geriatric trauma

ObjectivesDetermine whether geriatric victims of blunt trauma who preferred to communicate in a language other than English waited longer for pain medication or received more imaging studies than English-speaking patients with the same age and injuries. Secondary outcomes were the type of medication administered and number of imaging studies. MethodsWe conducted a retrospective analysis of all trauma activations to a single academic urban medical center from January 2019 to October 2019. We included all hemodynamically stable patients older than 65, with head or torso trauma after a low energy injury, and on at least one medication that was an anti-coagulant, anti-platelet, or chemotherapeutic. ResultsWe identified 1,153 unique patients (17, 379 radiologic studies) performed from January 2019 to October 2019, with a median of 5 (4–6) radiologic studies per patient. We excluded 419 patients for whom the language used was not reported (n = 7), no imaging was not reported (n = 16), or no medication was recorded as given (n = 409), leaving 734 patients for further analysis. Of those 734 patients, 460 preferred to communicate in English, 84 in Mandarin Chinese, 64 in Spanish, 37 in Cantonese Chinese, and 35 in Korean, and 29 in Russian. Across all languages patient age and Injury Severity Score (ISS) were comparable. Those who preferred to communicate in Spanish, Russian, or Korean were more likely to be female than those who preferred English, Mandarin, or Cantonese, but this tendency was not statistically significant (χ2-test; p = 0.051, 0.15 after Bonferroni correction). We did not find a statistically significant association between preferred language and time to medication, fraction of opioids used as first-line pain medication, or number of imaging studies performed. Across all patients, the most common medications administered were acetaminophen (524/734, 71%), any opioid (111/734, 15%), followed by local infiltration or nerve block with lidocaine (49/734, 6.7%). ConclusionsA retrospective analysis of patients with low-risk blunt trauma found no relationship between preferred language, time to pain medication, use of opioids or number of imaging studies.

A combined laparoscopic and open delayed repair of a rare traumatic abdominal wall hernia

Introduction: Traumatic abdominal wall hernias (TAWHs) are uncommon and result from a high-energetic blunt trauma to the abdomen. These hernias are not always apparent in initial trauma evaluation. No consensus exists regarding optimal timing and surgical approach. Case Presentation: A 68-year-old Caucasian woman was involved as a passenger in a high-energetic head-on collision motor vehicle accident. In the initial assessment a sternal fracture, four rib fractures, a small pneumothorax, and a medial malleolus fracture were found. A small abdominal wall hernia was missed. Six months later she presents with a painful mass in her left flank. Computed tomography (CT) showed a large hernia containing colon. An elective hybrid repair was done. Laparoscopically, a preperitoneal mesh was placed. Afterward, using open access, the abdominal wall musculature was re-fixated on the iliac crest. Discussion: Emergent surgical management of TAWH is often preferred due to high incidence of associated intra-abdominal lacerations. These settings are not always favorable for mesh placement. Some data suggest a higher recurrence rate for hernias without mesh augmentation and repair within the acute posttraumatic period. Conservative management poses the risk of incarceration and hernia defect enlargement. A delayed repair can be considered if the patient is hemodynamically stable, no associated visceral lacerations are present and the defect is large enough to reduce the risk of incarceration. It has the advantage of mesh placement in healthy tissue. Conclusions: A delayed laparoscopic repair seems a safe and valid option allowing larger mesh placement. Additional fascia closure of muscle fixation can be done granting more reinforcement and smaller incision needs and thus less postoperative pain.

Occult traumatic pneumothorax: Is routine follow up chest X-ray necessary?

• Ideal follow up of occult pneumothoraces is not defined. • Occult pneumothoraces rarely require intervention. • Routine follow up chest X-rays are low yield. Occult pneumothoraces (OPTX) are pneumothoraces that are not seen on chest X-ray (CXR) but visualized on computerized tomography (CT) scan. OPTX are frequently discovered during the initial trauma evaluation, there is a paucity of evidence based guidelines on how they should be further monitored. In this study we hypothesized that the practice of obtaining routine CXR for the surveillance of OPTX does not alter clinical management. We retrospectively analyzed all adult (18 years or older) patients with a traumatic (blunt and penetrating) OPTX over a 7-year period (2013–2019) evaluated at an academic, Level 1, urban trauma center. Patient demographics mechanism of injury were abstracted. We examined subsequent radiographic and clinical evolution of OPTX as well as the need for intervention. 363 patients were included in the series. Mean age was 47.8 years (range 18–98), 64.6% of the patients were male. Only 7 (1.9%) patients subsequently required an intervention for an OPTX. Neither age, sex, Injury severity score (ISS), or chest abbreviated injury score (AIS) ( p = 0.072) were predictive of the need for intervention. Six of the seven patients that required intervention demonstrated clinical symptoms of pneumothorax progression. In our experience the practice of obtaining routine chest X-rays for monitoring OPTX did not change clinical management. Obtaining a chest X-ray based on symptoms may be a more effective utilization of resources.

Blunt thoracic trauma: role of chest radiography and comparison with CT - findings and literature review.

In the setting of acute trauma where identification of critical injuries is time-sensitive, a portable chest radiograph is broadly accepted as an initial diagnostic test for identifying benign and life-threatening pathologies and guiding further imaging and interventions. This article describes chest radiographic findings associated with various injuries resulting from blunt chest trauma and compares the efficacy of the chest radiograph in these settings with computed tomography (CT). Common chest radiographic findings in blunt thoracic injuries will be reviewed to improve radiologic identification, expedite management, and improve trauma morbidity and mortality. This article discusses demographic information, mechanism of specific injuries, common imaging findings, imaging pearls, and pitfalls and exhibits several classic imaging findings in blunt chest trauma. Thoracic structures commonly injured in blunt trauma that will be discussed in this article include vasculature structures (aortic trauma), the heart (cardiac contusion, pericardial effusion), the esophagus (esophageal perforation), pleural space and airways (pneumothorax, hemothorax, bronchial injury), lungs (pulmonary contusion), the diaphragm (diaphragmatic rupture), and the chest wall (flail chest). Chest radiography plays an important role in the initial evaluation of blunt chest trauma. While CT imaging has a higher sensitivity than chest radiography, it remains a valuable tool due to its ability to provide rapid diagnostic information in time-sensitive trauma situations and is ubiquitously available in the trauma bay. Familiarity with the gamut of injuries that may occur as well as identification of the associated chest radiograph findings can aid in timely diagnoses and prompt management in the setting of acute blunt chest trauma.

Caring for Incarcerated Patients: Can it Ever be Equal?

Incarcerated patients represent one of the most vulnerable populations in the United States healthcare system. Studying disparities in care they receive, however, has been difficult due to a history of abuse at the hands of medical researchers rendering this population excluded from most current medical research. Due to incarceration, these patients are frequently maintained in shackles and under constant guard when receiving healthcare. There is a paucity of literature on the influence these measures exert on healthcare workers and the care they provide. Our study aimed to measure surgical trainee's perception of health inequities and disparities in incarcerated individuals undergoing surgical care. An anonymous cross-sectional survey was administered at our single institution to all general surgery trainees assessing perceptions in delivering care to incarcerated patients within our hospital system. The survey consisted of 10 items, nine of which were yes or no responses, and 1 open-ended text question. Survey results were averaged, and percentages were reported. Of all current general surgery residents (n = 60), 40 (66%) completed the survey. Almost all respondents (n = 39, 97.5%) have cared for a patient that was incarcerated or in police custody. Most respondents (n = 25, 62.5%) have operated on an incarcerated patient with an armed guard present in the operating room. Similarly, most respondents (n = 26, 65%) have cared for a patient intubated and sedated that was shackled to a bed. The majority of respondents (n = 30, 75%) recalled incidents where a trauma patient was actively questioned by law enforcement during the primary/secondary survey during initial trauma evaluation. At the time of hospital discharge, a quarter (n = 10, 25%) of respondents reported being unable to prescribe all of the medications that a non-imprisoned patient would receive with the same condition. In addition, 18 (45%) respondents felt they were unable to arrange outpatient follow-up with physical or occupational therapy and/or the patient's primary/consulting physician due to patient's incarcerated status. Strikingly, half of respondents (n = 19, 47.5%) believed that the incarcerated patient received substandard care, and the majority of respondents (n = 28, 72%) agreed that the holding areas for incarcerated patients in the emergency room provide substandard patient care. The current status of caring for incarcerated patients within our system represents an urgent and needed area for quality improvement. Surgical trainees report difficulty caring for these patients, and they perceive these individuals receive substandard care. Though our cross-sectional study did not assess the origin of this disparity, the challenges trainees face in caring for incarcerated patients, from assessment to diagnosis and treatment, as well as in follow-up signals an area requiring further research and study.

Diagnostic Benefit of MRI for Exclusion of Ligamentous Injury in Patients with Lateral Atlantodental Interval Asymmetry at Initial Trauma CT.

Background Cervical spine CT is regularly performed to exclude cervical spine injury during the initial evaluation of trauma patients. Patients with asymmetry of the lateral atlantodental interval (LADI) often undergo subsequent MRI to rule out ligamentous injuries. The clinical relevance of an asymmetric LADI and the benefit of additional MRI remain unclear. Purpose To evaluate the diagnostic benefit of additional MRI in patients with blunt trauma who have asymmetry of the LADI and no other cervical injuries. Materials and Methods Patients who underwent cervical spine CT during initial trauma evaluation between March 2017 and August 2019 were retrospectively evaluated. Those who underwent subsequent MRI because of LADI asymmetry of 1 mm or greater with no other signs of cervical injury were identified and reevaluated by two readers blinded to clinical data and initial study reports regarding possible ligamentous injuries. Results Among 1553 patients, 146 (9%) had LADI asymmetry of 1 mm or greater. Of these, 46 patients (mean age ± standard deviation, 39 years ± 22; 28 men; median LADI asymmetry, 2.4 mm [interquartile range, 1.8-3.1 mm]) underwent supplementary MRI with no other signs of cervical injury at initial CT. Ten of the 46 patients (22%) showed cervical tenderness at clinical examination, and 36 patients (78%) were asymptomatic. In two of the 46 patients (4%), MRI revealed alar ligament injury; both of these patients showed LADI asymmetry greater than 3 mm, along with cervical tenderness at clinical examination, and underwent treatment for ligamentous injury. In 13 of the 46 patients (28%), signal intensity alterations of alar ligaments without signs of rupture were observed. Four of these 13 patients (31%) were subsequently treated for ligamentous injury despite being asymptomatic. Conclusion Subsequent MRI following CT of the cervical spine in trauma patients with lateral atlantodental interval asymmetry may have diagnostic benefit only in symptomatic patients. In asymptomatic patients without proven cervical injuries, subsequent MRI showed no diagnostic benefit and may even lead to overtreatment. © RSNA, 2021 Online supplemental material is available for this article.

Cost-effectiveness of immediate total-body CT in patients with severe trauma (REACT-2 trial).

The effect of immediate total-body CT (iTBCT) on health economic aspects in patients with severe trauma is an underreported issue. This study determined the cost-effectiveness of iTBCT compared with conventional radiological imaging with selective CT (standard work-up (STWU)) during the initial trauma evaluation. In this multicentre RCT, adult patients with a high suspicion of severe injury were randomized in-hospital to iTBCT or STWU. Hospital healthcare costs were determined for the first 6months after the injury. The probability of iTBCT being cost-effective was calculated for various levels of willingness-to-pay per extra patient alive. A total of 928 Dutch patients with complete clinical follow-up were included. Mean costs of hospital care were €25809 (95 per cent bias-corrected and accelerated (bca) c.i. €22617 to €29137) for the iTBCT group and €26155 (€23050 to €29344) for the STWU group, a difference per patient in favour of iTBCT of €346 (€4987 to €4328) (P = 0.876). Proportions of patients alive at 6months were not different. The proportion of patients alive without serious morbidity was 61.6 per cent in the iTBCT group versus 66.7 per cent in the STWU group (difference -5.1 per cent; P = 0.104). The probability of iTBCT being cost-effective in keeping patients alive remained below 0.56 for the whole group, but was higher in patients with multiple trauma (0.8-0.9) and in those with traumatic brain injury (more than 0.9). Economically, from a hospital healthcare provider perspective, iTBCT should be the diagnostic strategy of first choice in patients with multiple trauma or traumatic brain injury.

Traumatic Brain Injury

The emergency department (ED) clinician needs to be prepared to manage patients of all ages with traumatic brain injury (TBI). This review outlines key historical and physical examination findings on initial trauma evaluation and treatment of the severely head injured patient with a herniation syndrome. The most common lesions seen on cranial computed tomographic (CT) scanning are discussed. Since the most important decision in managing patients with milder forms of TBI is whether to perform brain imaging, the review includes an in-depth discussion of the history and evolution of CT decision rules, including the most commonly used rule in children. Given the aging population and increased use of anticoagulants, it is imperative to understand the current evidence available to best treat these patients. Finally, we may all be required to assess sport-related concussions in the ED or on the field. This review contains 6 figures, 10 tables, and 37 references. Key words: traumatic brain injury, concussion, subdural hematoma, subarachnoid hemorrhage, Canadian head CT rules, PECARN, mannitol, hypertonic saline

Checklist for the initial evaluation of oral and maxillofacial trauma.

The standardization of the maxillofacial examination using a validated checklist is highly important. A checklist can also be a valuable tool for epidemiological studies, as it provides all clinical information related to maxillofacial trauma. The aim of this study was to propose a new checklist for the initial evaluation of maxillofacial trauma. The development and validation of the new checklist were performed in four consecutive phases: (a) determination of items and development of the checklist; (b) analysis by experts; (c) pre-test; and (d) pilot study. The checklist was designed as follows: (a) Specific signs and symptoms (Part 1); (b) Specific signs and symptoms (Part 2); (c) Intraoral signs and symptoms; and (d) Imaging examination. A good level of agreement was found among the experts and no items were excluded during the validation step. The administration of the instrument to the target population revealed the lack of some important aspects of the clinical evaluation, such as halitosis, otorrhea, petechiae, eyelid ptosis, hypo/hyperacusis, and temporomandibular join sounds. These missing signs were included in the final version. This checklist is a practical guide that can be used by specialists or students in oral and maxillofacial surgery and it can contribute to the quality of health care at outpatient and oral-maxillofacial surgery services for patients with maxillofacial trauma.

Operative Traumatic Aortic Injuries at an Urban Pediatric Hospital.

Limited data are available describing the long-term results of pediatric patients undergoing aortic repair secondary to trauma. Therefore, this descriptive investigation was completed to abrogate this deficit. A retrospective review of an urban level 1 pediatric trauma database maintained at a high-volume dedicated children's hospital between 2008-2018 was completed to capture all cases of severe traumatic aortic injury and associated demographics, mechanisms, injury severity, treatment, and clinical outcomes. In the prespecified interval, 2189 children (age <18years) presented to our facility as a level 1 trauma activation. Of these cases, a total of 10 patients (.5%) had a demonstrable thoracic or abdominal aortic injury. The mean age of our study cohort was 10.4 ± 5.7years. The mechanism of injury consisted of 8 participants involved in motor vehicle accidents, 1 pedestrian struck by a vehicle, and 1 struck by a falling boulder. Injuries were identified via CT angiogram (n = 9) or autopsy (n = 1) and consisted of 6 thoracic aortas and 4 abdominal aortas. The mean trauma injury severity score was 37.6 ± 19.9. Seven of the patients underwent open surgical intervention, 1 underwent endovascular intervention, 1 was treated with medical management, and 1 patient expired in the trauma bay before surgery could be performed. Aortic pathologies observed were 6 transections, 2 dissections, and 2 occlusions. Five of the ten patients underwent nonaortic surgical procedures. To determine operative outcomes, we excluded the 2 patients who did not receive aortic intervention. In the 8 remaining patients, the mean hospital length of stay was 12.8 ± 4.8days with 6.8 ± 4.1days in the intensive care unit. All 9 participants who survived the initial trauma evaluation were discharged from the hospital. Mean follow-up was 38.3 ± 43.0months; during which, we observed no additional aortic-related morbidity, mortality, and reinterventions. The only stent-graft deployed remained in stable position without evidence of endoleak or migration by duplex. Traumatic aortic injury is exceedingly rare in children and primarily of blunt etiology. Of the patients who survive the scene, operative repair seems to be associated with excellent perioperative and long-term survival.

Development and Implementation of a Pilot Radiation Reduction Protocol for Pediatric Head Injury

BackgroundTraumatic brain injury is the leading cause of morbidity and mortality for children in the United States. The aim of this study was to develop and implement a guideline to reduce radiation exposure in the pediatric head injury patient by identifying the patient population where repeat imaging is necessary and to establish rapid brain protocol magnetic resonance imaging as the first-line modality. MethodsA retrospective chart review of trauma patients between 0 and 14 y of age admitted at a pediatric level 2 trauma center was performed between January 2013 and June 2019. The guideline established the appropriateness of repeat scans for patients with Glasgow Coma Scale >13 with clinical neurological deterioration or patients with Glasgow Coma Scale ≤13 and intracranial hemorrhagic lesion on initial head computed tomography (CT). ResultsOur trauma registry included 592 patients during the study period, 415 before implementation and 161 after implementation. A total of 132 patients met inclusion criteria, 116 pre-guideline and 16 post-guideline. The number of patients receiving repeat head CTs significantly decreased from 34.5% to 6.3% (P < 0.02). There was also a significant decrease in the mean number of head CT/patient pre-guideline 1.63 (range 1-7) compared with post-guideline 1.06 (range 1-2) (P < 0.02). ConclusionsCT head imaging is invaluable in the initial trauma evaluation of pediatric patients. However, it can be overused, and the radiation may lead to long-term deleterious effects. Establishing a head imaging guideline which limits use with clinical criteria can be effective in reducing radiation exposure without missing injuries.

CT volumetric measurements correlate with split renal function in renal trauma.

To evaluate whether volumetric measurements of segmental vascular injuries (SVIs) based on computed tomography (CT) imaging obtained during an initial trauma survey correlate with future nuclear medicine (NM) split renal function. A retrospective review was performed of renal trauma patients treated at a level 1 trauma center between 2008 and 2015. Patients with unilateral SVIs on initial CT imaging with follow-up NM renal scans were evaluated. CT-based split renal function was calculated by assessing the ratio of ipsilateral uninjured kidney volume to bilateral total uninjured kidney volume by two separate radiologists. Eight patients with unilateral SVIs on initial CT trauma evaluation underwent follow-up NM renal scans at a mean of 4months (range 2-6) after injury. Mean NM split renal function of the injured kidney was 43% (range 22-57). Based on the CT volumetric measurements of the affected kidney, mean percent injured was 23% (range 7-62) with a calculated mean split renal function of 44% (range 23-60). Calculated mean CT split function correlated with NM split function (R = 0.89). Intraclass correlation measuring inter-rater reliability for CT volumetric measurements was 0.94 (95% confidence interval 0.72-0.99). Volumetric measurements based on CT imaging obtained during the initial trauma evaluation correlated with future NM split renal function after SVIs with high inter-rater reliability. This method utilizes pre-existing imaging and avoids additional radiation exposure, work burden, and financial cost from a NM scan. Further evaluation is required to assess feasibility with more complex injuries.