Incidence of blunt cerebrovascular injury in low-risk cervical spine fractures

Background

It has been suggested that specific cervical spine fractures (CSfx) (location at upper cervical spine [CS], subluxation, or involvement of the transverse foramen) are predictive of blunt cerebrovascular injury (BCVI). We sought to determine the incidence of BCVI with CSfx in the absence of high-risk injury patterns.

Methods

We performed a retrospective study in patients with CSfx who underwent evaluation for BCVI. The presence of recognized CS risk factors for BCVI and other risk factors (Glasgow coma score ≤ 8, skull-based fracture, complex facial fractures, soft-tissue neck injury) were reviewed. Patients were divided into 2 groups based on the presence/absence of risk factors.

Results

A total of 260 patients had CSfx. When screened for high-risk pattern of injury for BCVI, 168 patients were identified and 13 had a BCVI (8%). The remaining 92 patients had isolated low CSfx (C4–C7) without other risk factors for BCVI. In this group, 2 patients were diagnosed with BCVI (2%). Failure to screen all patients with CSfx would have missed 2 of 15 BCVIs (13%).

Conclusions

We propose that all CS fracture patterns warrant screening for BCVI.     

Recent changes in the management of blunt splenic injury: effect on splenic trauma patients and hospital implications

INTRODUCTION

Management of blunt splenic injury has been controversial with an increasing trend towards splenic conservation. A retrospective study was performed to identify the effect of this changed policy on splenic trauma patients and its implications.

PATIENTS AND METHODS

Data regarding patient demography, mode of splenic injury, CT grading, blood transfusion requirement, operative findings hospital stay and follow-up were collected. Statistical analysis of the data was performed using non-parametric Mann–Whitney tests

RESULTS

Over an 8-year period, only 21 patients were admitted with blunt splenic injury. Ten patients were managed operatively and 11 non-operatively. Non-operative management failed in one patient due to continued bleeding. Using Buntain''s CT grading, the majority of grades I and II splenic injuries were managed non-operatively and grades III and IV were managed operatively (P = 0.008). Blood transfusion requirement was significantly higher among the operative group (P = 0.004) but the non-operative group had a significantly longer hospital stay (P = 0.029). Among those managed non-operatively (median age, 24.5 years), a number of patients were followed up with CT scans with significant radiation exposure and unknown long-term consequences.

CONCLUSIONS

Non-operative management of blunt splenic trauma in adults can be performed with an acceptable outcome. Although CT is classed as the ‘gold standard’, initial imaging for detection and evaluation of blunt splenic injury, ultrasound can play a major role in follow-up imaging and potentially avoids major radiation exposure.     

Blunt intraabdominal arterial injury in pediatric trauma patients: injury distribution and markers of outcome

Background

The epidemiology of pediatric blunt intraabdominal arterial injury is ill defined. We analyzed a multiinstitutional trauma database to better define injury patterns and predictors of outcome.

Methods

The American College of Surgeons National Trauma Database was evaluated for all patients younger than 16 years with blunt intraabdominal arterial injury from 2000 to 2004. Injury distribution, operative treatment, and variables associated with mortality were considered.

Results

One hundred twelve intraabdominal arterial injuries were identified in 103 pediatric blunt trauma patients. Single arterial injury (92.2%) occurred most frequently: renal (36.9%), mesenteric (24.3%), and iliac (23.3%). Associated injuries were present in 96.1% of patients (abdominal visceral, 75.7%; major extraabdominal skeletal/visceral, 77.7%). Arterial control was obtained operatively (n = 46, 44.7%) or by endovascular means (n = 6, 5.8%) in 52 patients. Overall mortality was 15.5%. Increased mortality was associated with multiple arterial injuries (P = .049), intraabdominal venous injury (P = .011), head injury (P = .05), Glasgow Coma Score less than 8 (P < .001), cardiac arrest (P < .001), profound base deficit (P = .007), and poor performance on multiple injured outcomes scoring systems (Revised Trauma Score [P < .001], Injury Severity Score [P = .001], and TRISS [P = .002]).

Conclusion

Blunt intraabdominal arterial injury in children usually affects a single vessel. Associated injuries appear to be nearly universal. The high mortality rate is influenced by serious associated injuries and is reflected by overall injury severity scores.     

Predictors of pediatric blunt cerebrovascular injury

Background/purpose

Blunt cerebrovascular injury (BCVI) is clinically challenging because these injuries are hard to detect and can have serious neurological consequences, and optimal screening criteria have not been established for children. This study aims to determine risk factors for BCVI in pediatric patients and to evaluate screening practices in a single institutional series.

Reimaging in pediatric blunt spleen and liver injury

Background

APSA guidelines do not recommend routine reimaging for pediatric blunt liver or spleen injury (BLSI). This study characterizes the symptoms, reimaging, and outcomes associated with a selective reimaging strategy for pediatric BLSI patients.

A 10-year review of blunt renal artery injuries at an urban level I trauma centre

Introduction

Little consensus exists over the management of high-grade renal injuries, with continued debate over observation versus invasive surgery. Blunt renal artery injury (BRAI) is a high-grade injury that may result in renal dysfunction, hypertension, or failure.

Materials and methods

Management of BRAI at a level I trauma centre during a decade was retrospectively reviewed to determine incidence, assess management strategy, and evaluate hospital outcomes. Data collected included demographics, injury details, standardised scoring, renal injury grade, haemodynamic stability, diagnostic modalities, medical interventions, mortality, and hospitalisation length.

Results

Thirty-eight BRAI patients (21 Grade IV and 17 Grade V injuries) were admitted, representing 0.16% of trauma admissions, and consisting primarily of young males. Ultrasonography and CT was performed in 92.1% and 76.3% of patients, respectively. Primary management included exploratory laparotomy in 42.9%, angiography and embolisation in 34.3%, and observation in 22.9%. Six nephrectomies and one revascularisation were performed. The incidence of BRAI and use of angiography are higher than those reported in previous studies.

Conclusion

Over the past decade, increased use of CT as a diagnostic tool for confirming renal injury in haemodynamically stable patients at our institution may have contributed to the increase in BRAI detection. Higher utilisation of angiography has enabled a more conservative approach. In this series, angiography had a success rate of 94.4%. Angiography and embolisation or observation with careful monitoring are viable management options in haemodynamically stable patients with isolated BRAI.     

Transection of the stomach after blunt injury in the pediatric population

The incidence of gastric rupture after abdominal blunt injury ranges between 0.02% and 1.7% and is associated with a high morbidity (Tejerina Alvarez EE, Holanda MS, Lopex-Espadas F, Dominguez MJ, Ots E, Diaz-Reganon J. Gastric rupture from blunt abdominal trauma. Injury. 2004;35:228-231, Allen GS, Moore FA, Cox CS. Hollow visceral injury and blunt trauma. J Trauma. 1998;45:69-75.). Stomach transection represents an even rarer type of blunt gastric injury. Although not specifically included in the accepted classification of stomach injury, its clinical manifestation is dramatic, requiring immediate surgical management. We present a case report from our institution and reviewed the international literature focusing on the pediatric patient to illustrate this injury in terms of mechanism of injury, clinical presentation, and surgical management.     

National trends in pediatric blunt spleen and liver injury management and potential benefits of an abbreviated bed rest protocol

Purpose

Recent reports suggest that an abbreviated bed rest protocol (ABRP) may safely reduce length of stay (LOS) and resource utilization in pediatric blunt spleen and liver injury (BSLI) patients. This study evaluates national temporal trends in BLSI management and estimates national reduction in LOS using an ABRP.

Methods

Pediatric patients (< 18 years old) sustaining BLSI were identified in the Kids’ Inpatient Database from 2000 to 2009. Yearly rates of injury and operative intervention were examined and stratified by type of injury. APSA guidelines and the reported ABRP were applied based on abbreviated injury score (AIS) and compared with actual LOS.

Results

22,153 patients were identified. Over the study period, operative rates for spleen and liver injuries and overall mortality significantly declined: LOS = 3.1 days (± 1.6) and 2.7 days (± 1.9) for spleen and liver, respectively. If APSA guidelines were followed, the rates were LOS = 3.7 days (± 1.1) and 3.4 days (± 0.7), respectively. Application of the ABRP would result in LOS = 1.3 days (± 0.5) for all BSLI patients. An ABRP could potentially save 1.7 hospital days/patient or 36,964 patient hospital days nationally.

Conclusion

Our study confirms a significant national decrease in operative intervention and overall mortality in patients with BSLI. Additionally, it appears that a shorter observation period than the APSA guidelines is being utilized. The implementation of ABRP holds potential in further reducing LOS and resource utilization.     

Traumatic `degloving' of the colon in blunt abdominal injury

We describe two cases of traumatic `degloving' of the colon in blunt abdominal trauma. This is an extremely rare injury with the potential to present late. The mechanism of injury appears to be a combination of focal blunt abdominal trauma associated with a shearing force. The potential diagnostic dilemma posed by colonic `degloving' is outlined and following review of the literature we conclude that CT scanning is the most reliable way of detecting such injuries, if emergency laparotomy is not indicated.     

Pediatric trauma center verification improves quality of care and reduces resource utilization in blunt splenic injury

Purpose

We sought to evaluate value impact of transition from an adult trauma center treating children (ATC) to a verified pediatric trauma center (PTC) in children with blunt splenic injury (BSI).

Justification for an abbreviated protocol in the management of blunt spleen and liver injury in children

Objective(s)

The current management of blunt spleen/liver injury in children requires a number of days of bed rest equal to the grade of injury plus 1. This protocol is used even when there is no clinical indication of ongoing bleeding. To establish a prospective protocol with an abbreviated period of bed rest, we conducted a retrospective review of our blunt spleen and liver trauma experience to examine the safety of such an attenuated protocol.

Methods

A retrospective analysis of our most recent 10-year experience (January 1996 to December 2005) with blunt spleen or liver injury was performed. Patient demographics, vital signs, hemoglobin levels, need for transfusion, operations, and outcomes were measured. An abbreviated protocol using 1 night of bed rest for grades 1 and 2 injuries and 2 nights of bed rest for higher grades was designed. This protocol was then applied to our patient population to assess its safety. Data are expressed as mean ± SD.

Results

During the study period, 243 patients were admitted with blunt spleen and/or liver injury. The mean patient age was 9.0 ± 4.6 years, and the mean weight was 35.3 ± 19.3 kg. Sixty-three percent were male. The spleen was injured in 148 (61.2%) patients and the liver in 121 (50.0%), and 26 (10.6%) had both. The mean grade was 2.0 ± 1.1, for which the mean bed rest was 3.5 ± 1.1 days. This resulted in 5.6 ± 6.5 days of hospitalization. There were 9 patients who died, 7 with severe brain injury and 2 with massive liver hemorrhage on presentation. No patient required an operation or transfusion after 2 nights of observation who did not have clinically obvious signs of ongoing blood loss. Implementation of the abbreviated protocol would have affected 65.8% of our patients and would have saved a mean of 2.0 ± 1.5 hospital days per patient.

Conclusions

According to our data, an abbreviated trauma protocol with overnight bed rest for grades 1 and 2 injuries and 2 nights for higher grades could be safely used. This protocol would immensely improve current resource use. Based on these retrospectively collected data, we have initiated a prospective consecutive controlled series to assess the safety of such an attenuated protocol.     

Reduction of resource utilization in children with blunt solid organ injury

Background/purpose

Nonoperative management of blunt solid organ injuries continues to progress and improve cost-effective utilization of resources while maximizing patient safety. The purpose of this study is to compare resource utilization and patient outcomes after changing admission criteria from a grade-based protocol to one based on hemodynamic stability.

Emergency repair of blunt traumatic bronchus injury presenting with massive air leak

Blunt traumatic tracheobronchial injury is rare, but can be potentially life-threatening. It accounts for only 0.5%–2% of all trauma cases. Patients may present with non-specific signs and symptoms, requiring a high index of suspicion with accurate diagnosis and prompt treatment. A 26-year-old female was brought into the emergency department after sustained a blunt trauma to the chest from a high impact motor vehicle accident. She presented with signs of respiratory distress and extensive subcutaneous emphysema from the chest up to the neck. Her airway was secured and chest drain was inserted for right sided pneumothorax. CT of the neck and thorax revealed a collapsed right middle lung lobe with a massive pneumothorax, raising the suspicion of a right middle lobe bronchus injury. Diagnosis was confirmed by bronchoscopy. In view of the difficulty in maintaining her ventilation and persistent pneumothorax with a massive air leak, immediate right thoracotomy via posterolateral approach was performed. The right middle lobar bronchus tear was repaired. There were no intra- or post-operative complications. She made an uneventful recovery. She was asymptomatic at her first month follow-up. A repeated chest X-ray showed expanded lungs. Details of the case including clinical presentation, imaging and management were discussed with an emphasis on the early uses of bronchoscopy in case of suspected blunt traumatic tracheobronchial injury. A review of the current literature of tracheobronchial injury management was presented.     

腹腔镜早期探查术在腹部钝性外伤继发肠损伤中的应用价值

目的探讨腹腔镜早期探查术应用于腹部钝性外伤继发肠损伤中的临床效果,提高其治疗效果。方法回顾性分析在本院住院治疗的腹部钝性外伤继发肠损伤早期实施腹腔镜探查术患者40例的临床资料,并与同期早期（受伤后开始手术不超过6小时）手术患者38例进行比较。结果两组患者一般资料、肠管损伤部位及程度比较,差异无统计学意义（P〉0.05）;两组患者死亡率均较低,差异无统计学意义（P〉0．05）,但是观察组患者住院时间、ICU监护时间、机械通气时间及并发症发生率均低于对照组,差异存在统计学意义（P〈0．05）。结论腹腔镜探查术是集诊断和治疗为一体的现代化外科微创技术,在技术和设备许可的情况下,正确把握适应征,可以使腹部钝性外伤继发肠损伤患者获得最佳的诊治效果。     

右美托咪定对撞击性肺损伤大鼠的肺保护作用

目的探讨右美托咪定对撞击性肺损伤大鼠肺部的保护机制。方法清洁级成年雄性SD大鼠40只,随机均分为五组:正常对照组(C组)、右美托咪定组(D组)、胸部创伤模型组(T组)、胸部创伤模型~+右美托咪定处理组(TD组)和胸部创伤模型~+右美托咪定~+育亨宾(α2肾上腺素能受体阻断剂)组(TDY组)。C和D组只麻醉不创伤,T、TD、TDY组复制大鼠胸部撞击模型。持续监测五组大鼠创伤后0.5、1、2、4和6h的有创平均动脉血压(MIAP),处死前抽取动脉血0.5ml行动脉血气分析;采用免疫组织法检测肺组织NF-κBp65的表达;酶联免疫吸附实验(ELISA)检测血清中TNF-α和IL~(-1)β浓度;检测支气管肺泡灌洗液(BALF)中中性粒细胞占白细胞百分比(PMN),计算肺湿/干比(W/D);HE染色光镜下观察肺组织病理改变。结果创伤后0.5、1、2h时D组MIAP明显高于T组,创伤后4和6h时D组MIAP明显低于C和T组(P0.05);创伤后1hTDY组MIAP明显高于,创伤后4和6hTDY组MIAP明显低于C和TD组(P0.05)。T、TD和TDY组PaO_2、PaCO_2明显低于,pH、TNF-α和IL~(-1)β浓度明显高于C组(P0.01)。D、TD和TDY组PaO_2、PaCO_2明显高于,血清TNF-α和IL~(-1)β浓度明显低于T组(P0.01),T组pH明显高于D组,但明显低于TD、TDY组(P0.01)。D组肺组织NF-κBp65,T、TD和TDY组肺组织NF-κBp65、W/D和PMN明显高于C组(P0.05);D、TD、TDY组肺组织NF-κBp65、M/D和PMN明显低于T组(P0.01);TDY组肺组织NF-κBp65、M/D和PMN明显高于TD组(P0.01)。结论盐酸右美托咪定可通过抑制肺组织和血清中炎症因子的表达减轻创伤性肺损伤的程度。     

Hepatic artery transection after blunt trauma: case presentation and review of the literature

Hepatic artery injuries sustained as a result of blunt abdominal trauma are rare. This case represents the first reported hepatic artery transection and the second hepatic artery injury described in children. Hepatic artery injuries are associated with high mortality, and their management is complex and controversial.     

Pleural effusion following blunt splenic injury in the pediatric trauma population

Background

Pleural effusion is a potential complication following blunt splenic injury. The incidence, risk factors, and clinical management are not well described in children.

Methods

Ten-year retrospective review (January 2000–December 2010) of an institutional pediatric trauma registry identified 318 children with blunt splenic injury.

Results

Of 274 evaluable nonoperatively managed pediatric blunt splenic injures, 12 patients (4.4%) developed left-sided pleural effusions. Seven (58%) of 12 patients required left-sided tube thoracostomy for worsening pleural effusion and respiratory insufficiency. Median time from injury to diagnosis of pleural effusion was 1.5 days. Median time from diagnosis to tube thoracostomy was 2 days. Median length of stay was 4 days for those without and 7.5 days for those with pleural effusions (p < 0.001) and 6 and 8 days for those pleural effusions managed medically or with tube thoracostomy (p = 0.006), respectively. In multivariate analysis, high-grade splenic injury (IV–V) (OR 16.5, p = 0.001) was associated with higher odds of developing a pleural effusion compared to low-grade splenic injury (I–III).

Conclusions

Pleural effusion following pediatric blunt splenic injury has an incidence of 4.4% and is associated with high-grade splenic injuries and longer lengths of stay. While some symptomatic patients may be successfully managed medically, many require tube thoracostomy for progressive respiratory symptoms.     

Pneumoperitoneum in a patient with pneumothorax and blunt neck trauma

INTRODUCTION

Blunt trauma as a cause of pneumoperitoneum is less frequent and its occurrence without a ruptured viscus is rarely seen.

PRESENTATION OF CASE

We report a case of blunt neck trauma in which a motorcycle rider hit a fixed object causing severe laryngotracheal injury. The patient developed pneumothorax bilaterally and had pneumoperitoneum despite no injury to the internal viscus. Bilateral chest tube drainage and abdominal exploratory laparotomy was performed.

CONCLUSION

Free air in the abdomen after blunt traumatic neck injury is very rare. If pneumoperitoneum is suspected in the presence of pneumothorax, exploratory laparotomy should be performed to rule out intraabdominal injury. As, there is no consensus for this plan yet, further prospective studies are warrant. Conservative management for pneumoperitoneum in the absence of viscus perforation is still a safe option in carefully selected cases.     

Pediatric aortoiliac injury following blunt abdominal trauma: A case report

IntroductionThe most common mechanism of aortic injury involves motor vehicle collisions resulting in aortic disruptions, occurring almost exclusively in the chest. Injury to the abdominal aorta following blunt trauma is nearly twenty times less likely to occur than the thoracic aorta. Because of the low incidence, there are few reports regarding the presentation and repair of these particular injuries, especially in the pediatric population.Presentation of caseWe present a case of a 7-year-old boy involved in a high speed motor vehicle accident with an abdominal aorta transection at the aortic bifurcation extending into the left iliac artery. The injury was repaired using bovine pericardium with the adventitia and intima of the vessel approximated over the bovine bridge.DiscussionPrimary repair of thoracic aortic injury has been thoroughly described in the literature with good outcomes yet, abdominal aortic repair remains ambiguous. Few techniques and materials have been described with even less data surrounding the long-term outcomes.ConclusionBovine pericardium is a strong and stable acellular collagenous material with the potential to accelerate endothelialization and tissue regeneration. This remains an interesting field of research as stenosis and pseudo-coarction data have yet to be determined.     

CT scan-detected pneumoperitoneum: An unreliable predictor of intra-abdominal injury in blunt trauma

Introduction

Free intra-peritoneal air in blunt trauma is a classic sign associated with hollow viscus injury, traditionally mandating laparotomy. In blunt abdominal trauma, the CT scan has become the diagnostic modality of choice. The increased sensitivity of CT scans may lead to detection of free intra-peritoneal air that is not clinically significant.

Objective

To characterize conditions and findings that allow for the safe observation of blunt trauma patients with free air and to propose a patient management algorithm to decrease rates of non-therapeutic laparotomy.

Design

A retrospective review of 5877 blunt trauma patients who had an abdominal CT scan upon admission to our hospital from 2003 to 2011. A secondary CT review was performed by a single radiologist to further characterize the CT findings in the 74 patients with free air reported on initial scan. Management and hospital course were reviewed in these patients.

Results

Of the 74 patients with intra-abdominal free air, 36 patients with a benign clinical picture were observed and 38 patients underwent urgent exploratory laparotomy. Eleven patients received a non-therapeutic laparotomy. The majority (61%) of patients, 45 of 74, had free air and no significant injury suggesting the presence of benign free air. Patients who had intra-abdominal injury also typically had other clinical or radiologic signs of injury. Findings that were highly predictive of intra-abdominal injury in the setting of free air were free fluid (P < 0.001), radiographic signs of bowel trauma (P < 0.001) as well as clinical and/or radiographic seatbelt sign (P = 0.004).

Conclusions

CT scans may detect free air that is not always clinically significant. Free fluid, seatbelt sign or radiographic signs of bowel trauma in the presence of pneumoperitoneum is highly predictive of injury and these patients should be explored. Based on the results of our study, we created an algorithm to aid in identifying those patients with intra-abdominal free air who may be observed safely.