Cervical spine injury in low-impact blunt trauma

Few data are available regarding the incidence of cervical spine injuries following relatively low-impact blunt trauma. This prospective level II trauma center study of low-impact blunt trauma found a 1.30% incidence of cervical spine injury. Impressive differences were found in such parameters as population characteristics, modes of injury, elapsed times to emergency department evaluation, and Revised Trauma Scores between this study group and those reported in prospective level I high-impact blunt trauma series. Cervical spine injury in low-impact blunt trauma is significant and often presents less than dramatically, thus emphasizing a need for maintaining a high index of suspicion at all times.     

Cervical spine radiography in alert asymptomatic blunt trauma patients

Report by Damian Bates, Specialist Registrar
Checked by John Butler, Specialist Registrar     

Cervical spine injuries in blunt trauma patients requiring emergent endotracheal intubation.

Airway management in the blunt trauma patient is complicated by the potential for causing or exacerbating an injury to the cervical cord if an unstable cervical fracture is present. The records of 987 blunt trauma patients who required emergent endotracheal intubation over a 5-year period were retrospectively reviewed to determine the incidence and type of cervical spine injury and the incidence of injury based on airway management. Sixty of the patients (6.1%) had a cervical fracture; 53 were potentially unstable injuries by radiographic criteria. Twenty patients had neurologic deficits prior to intubation. Twenty-six patients with unstable injuries were intubated orally, 25 nasally, and two by cricothyrotomy. One patient developed a neurologic deficit after nasotracheal intubation. Because of a possible selection bias in which severely injured patients were preferentially referred to this trauma center, the true incidence of cervical spine injuries may be lower than the 6.1% we found. The authors conclude that the incidence of serious cervical spine injury in a very severely injured population of blunt trauma patients is relatively low, and that commonly used methods of precautionary airway management rarely lead to neurologic deterioration.     

Cervical spine clearance and neck extension during percutaneous tracheostomy in trauma patients

INTRODUCTION: The lack of cervical spine clearance and inability to extend the neck are assumed to be relative contraindications for percutaneous tracheostomy. OBJECTIVE: To determine the necessity of cervical spine clearance and neck extension in trauma patients receiving percutaneous tracheostomy. DESIGN: Prospective analysis of case series from August 1, 1995 to August 31, 1998. SETTING: A university-based Level I trauma center. PATIENTS: A total of 88 consecutive trauma patients receiving percutaneous tracheostomy. Patients were divided into two groups based on the radiographic or clinical status of their cervical spine: cleared and noncleared. RESULTS: The overall success and complication rate were 99% (87/88) and 11% (10/88), respectively. There were no procedure-related deaths. The cleared group consisted of 60 patients; three patients in this group who had "bull" or "thick" necks did not have full neck extension during percutaneous tracheostomy. The noncleared group consisted of 28 patients, 13 of which had known cervical spine fractures; 27 noncleared patients were maintained in the neutral position (no extension) during percutaneous tracheostomy, whereas one patient with low suspicion of spinal injury was partially extended. Of the 13 patients with cervical spine fractures, six patients had been stabilized with a halo or operative fixation, and seven patients were stabilized with a cervical collar at the time of percutaneous tracheostomy. The success rate was 100% (60/60) for the cleared group compared with 96% (27/28) for the noncleared group (p > .05). The complication rate was 13% (8/60) for the cleared group compared with 7.1% (2/28) for the noncleared group (p > .05). We had a 100% success rate and no complications in the seven patients with cervical spine injury who were stabilized with a cervical collar. No patient had spinal cord injury caused by percutaneous tracheostomy. CONCLUSION: Percutaneous tracheostomy can be safely performed in trauma patients without cervical spine clearance and neck extension, including patients with stabilized cervical spine or spinal cord injury.     

Cervical spine: degenerative conditions

Degenerative cervical spine disorders will affect up to two-thirds of the population in their lifetime. While often benign and episodic in nature, cervical disorders may become debilitating resulting in severe pain and possibly neurologic sequelae. Non-operative treatment continues to play an important role in treating these patients, with medications, therapy and interventional pain injections playing increasing roles in treatment. Surgical treatment including anterior and posterior decompression and fusion have been effective treatments of many cervical disorders, but may lead to significant problems including adjacent level disease. Laminotomy/foraminotomy and total disc arthroplasty may avoid some of these problems while providing similar clinical results. Ongoing clinical trials and studies are helping to define the role of these new technologies in treatment of patients with degenerative cervical disorders, although their greater benefit has yet to be proven.     

The next logical step in the emergency radiographic evaluation of cervical spine trauma: the five-view trauma series

The five-view standard series is considered the golden standard in the radiographic evaluation of the cervical spine. Although the three-view trauma series has proved significantly more accurate than the cross-table lateral view in the emergency evaluation of patients with cervical spine trauma, this series does not deal with questionable findings. The introduction of a five-view trauma series, with the inclusion of supine oblique views, is the next logical step in the emergency evaluation of these patients. An algorithm for the emergency radiographic evaluation of patients with suspected cervical spine trauma is proposed.     

ED evaluation of the pediatric trauma patient by ultrasonography

The purpose of this study was to determine the accuracy of ultrasound examination of pediatric trauma patients by emergency physicians. Pediatric (age less than 18 years) trauma patients presenting to the emergency department of a level I trauma center were prospectively examined with bedside ultrasound during the secondary survey of their trauma resuscitation. Examinations were performed by emergency medicine residents and attending physicians who had completed an 8-hour course on trauma ultrasonography. Trauma physicians providing care to the patient were blinded to the results of the examination. In 47 children (median age 9 years) computed tomography of the abdomen/pelvis or laparotomy were also performed and served as gold standards to verify the presence or absence of free fluid in the abdomen. Sensitivity, specificity, and accuracy of the ultrasound examination for the detection of free fluid in the abdominal cavity was 75% (95% confidence interval [CI] 36% to 95%), 97% (95% CI 81% to 100%), and 92% (95% Cl 77% to 98%). Positive and negative predictive values were 90% (95% CI 46% to 100%) and 92% (95% CI 74% to 99%), respectively. Ultrasound examinations took an average of 7 minutes and 36 seconds, although this did not take into consideration delays created by interruptions for other diagnostic tests or procedures. An emergency physician and radiologist agreed on blinded interpretations of 83% of the examinations (kappa = 0.56). Bedside ultrasonography is a reliable and rapid method for screening traumatized children for the presence or absence of free fluid in the peritoneum even in the hands of novice sonographers.     

America's tragedy: pediatric trauma

Resuscitation of the pediatric trauma patient involves immediate assessment of ABCs. Interventions are made immediately upon recognition of abnormalities during the primary survey. After initial assessment and management of life-threatening processes, consider the optimal destination for further care and resuscitation. Keep in mind pediatric considerations like anatomical differences and the need for pediatric-sized equipment. Avoid the common errors that occur when resuscitating a pediatric trauma patient.     

Cervical injury in head trauma

Criteria for excluding cervical spine injury in patients who have sustained blunt head or neck trauma were prospectively studied at four hospitals in the Chicago area. The authors attempted to define a subset of these adult patients who, based on clinical criteria, could reliably be excluded from cervical spine radiography, thus avoiding unnecessary radiation and saving considerable time and money in their evaluation. Patients fell into four groups: (1) patients who were awake, alert, and had no complaint of neck pain or tenderness on physical examination; (2) patients who were awake, alert, but had complaint of neck pain or tenderness on physical examination laterally over the trapezius muscle only; (3) patients who were awake, alert, but had complaint of central neck pain or tenderness on physical examination over the cervical spine or center of the neck; and (4) patients who were not fully awake or alert, were clinically intoxicated, had other painful or distracting injuries, or had focal neurologic findings. Patients in group 4 had significantly more fractures (21/387) when compared with all other patients (7/478). Patients with central neck pain or tenderness (group 3) had significantly more fractures (7/237) than patients without pain or tenderness or with these findings limited to the trapezius area (0/236). It is clear that patients who have altered mental status, abnormal examination findings, distracting injury, or pain or tenderness over the cervical spine must have cervical spine radiographs.(ABSTRACT TRUNCATED AT 250 WORDS)     

Cervical spine: MR imaging techniques and anatomy

MR imaging techniques of the cervical spine are reviewed. Cervical spine anatomy is described, with special attention given to the intervertebral disks, the arterial system, and the peripheral and central nervous systems. Anatomic structures are detailed on sagittal, axial, and coronal MR images.     

MR imaging in cervical spine trauma

This article emphasizes the technical aspects of MR imaging in acute cervical trauma, and details the specific protocols used at the authors' institution. A systematic approach to the evaluation of MR images in the trauma setting is discussed, and the role of MR imaging in the characterization of spinal cord injury and identification of spinal instability is defined. Correlations between MR imaging findings and patient functionality and outcome are outlined, and various classifications of cervical spine injuries are reviewed.