Cervical spine injuries and collar complications in severely injured paediatric trauma patients

A bioengineering investigation of cervical collar design and fit: Implications on skin health

BACKGROUND

Cervical collars restrict cervical spine movement to minimise the risk of spinal cord injury. Collars apply mechanical loading to the skin putting it at risk of skin damage. Indeed, cervical collar-related pressure ulcers are unacceptably prevalent, especially at the occiput, mandibles, and chin. Collar design and fit are often key considerations for prevention.

METHODS

This comprehensive study evaluated four commercial prehospital and acute care cervical collars. Pressure, microclimate, transepidermal water loss and skin hydration were measured at the interface between the device and the skin. Range of motion restriction was measured to evaluate effective immobilisation. Head, neck, and shoulder morphology was evaluated using three-dimensional scans.

FINDINGS

The occiput experienced significantly higher interface pressures than the chin and mandibles for most collar designs. Interface pressure at the occiput was significantly higher for the Stiffneck extrication collar compared to the other collar designs. The Stiffneck collar also provided the most movement restriction, though not significantly more than other designs. Relative humidity at the device skin interface was significantly higher for the Stiffneck and Philadelphia collars corresponding to closed cell foam padding, in contrast to the open cell foams lined with permeable fabric used in the other collars. Collar discomfort correlated with both occipital pressure and skin humidity.

INTERPRETATION

The occiput is at increased risk of cervical collar-related pressure ulcers during supine immobilisation, especially for Stiffneck extrication collars. Lined open-cell foams could be used to minimise skin humidity and increase comfort.

Allergic Contact Dermatitis Due to Cervical Collar

Cervical collars are routinely applied in neurosurgical units following trauma or cervical spine operations. We describe a case of florid allergic contact dermatitis that developed as a complication following collar application in a postoperative patient.

Characteristics and In-Hospital Outcomes of Pediatric Traumatic Spinal Injuries in A Referral Trauma Center

Objective:

To evaluate the characteristics and in-hospital outcomes of traumatic spinal injuries among children admitted to a local trauma center in Iran.

Methods:

Patients aged 0-18 years who had been admitted to Shahid Kamyab trauma center for acute traumatic spinal injury (Mashhad, Iran) between 2011 and 2018 were evaluated retrospectively. Various demographic, clinical, radiological, and outcome variables were recorded and analyzed.

Results:

A total of 127,300 trauma patients were evaluated and amongst them, 61 children had spinal trauma. The mean age was 11.1 and there was no significant sex preponderance (54% males). Most of the injuries were occurred in summer (34.4%) and the most common trauma mechanism was motor vehicle accidents (55.7%) followed by falling (36.1%). Almost all patients (95.1%) had vertebral fractures, which were in the cervical, thoracic, and lumbosacral area in order to decrease incidence. 67.2% of patients were managed non-surgically. The mean hospital stay was 8.9 days and 82.0% of patients had been discharged with normal motor function.

Conclusion:

Pediatric spinal trauma is less studied entity in the field of traumatology due to the lower prevalence of these injuries in pediatric patients worldwide. But our study shows a higher prevalence of such injuries in the pediatric population. Although controversial, the leading cause of these injuries is motor vehicle accidents. Fortunately, short term in-hospital outcome seems to be good in such injuries.

Comparison of cervical motion restriction and interface pressure between two cervical collars

Background Cervical collar treatment is widespread amongst a broad range of ages and conditions. However, these devices are associated with a known correlation between collar usage and adverse effects such as pressure ulcers, infections, exacerbated spinal injury, and higher morbidity. The objective of this study was to determine if the ability of a newly developed DJO Procare XTEND 174 collar to restrict cervical spine motion was similar to that of the previously studied Össur Miami J collar and to determine if this was done while producing similar tissue interface pressures. Methods Three-dimensional kinematic data were obtained for twelve healthy volunteer participants (6 female, 6 male) using a 10-camera infrared motion capture system. Cervical range of motion in each plane was calculated using angles between head and thorax rigid-body axes. Tissue interface pressure was measured between the head and the collar with three flexible pressure sensor pads over the anterior mandibles and occiput. The distribution of interface pressures was obtained in both the seated and supine positions. Findings Both collars significantly restricted range of motion in all movement directions (p < 0.001) compared to no collar. There were no significant differences in restrictiveness nor in tissue interface pressures between the collars. Both collars exhibited similar range of motion restriction and similar interface pressures. Interpretation Our data indicate that the newly developed Procare XTEND 174 collar is not statistically different from the scientifically recognized Miami J benchmark collar regarding cervical range of motion restriction in all three planes and tissue interface pressure.

Pediatric Cervical Spine Injuries and SCIWORA: WFNS Spine Committee Recommendations

Cervical trauma in children have variations from the adults mainly due to anatomic differences. An optimal diagnostic and treatment strategy is critical, particularly when there is a lack of standardized protocols for the management of such cases. This review paper examines the diagnostic and treatment options of pediatric cervical trauma and Spinal Cord Injury Without Radiographic Abnormality (SCIWORA). A literature search for the last 10 years were conducted using key words. Case reports, experimental studies, papers other than English language were excluded. Up-to-date information on pediatric cervical trauma and SCIWORA were reviewed and statements were produced to reach a consensus in 2 separate consensus meeting of WFNS Spine Committee. The statements were voted and reached a consensus using Delphi method. This review reflects different aspects of contemporary pediatric cervical trauma decision-making and treatment, and SCIWORA. The mainstay of SCIWORA treatment is nonsurgical with immobilization, avoidance of risky activities. Prognosis generally depends on the initial neurological status and magnetic resonance imaging. Due to a significant discrepancy in the literature on diagnostic and management, future randomized controlled trials are needed to aid in generating standardized protocols.

Multiple trauma management in mountain environments - a scoping review : Evidence based guidelines of the International Commission for Mountain Emergency Medicine (ICAR MedCom). Intended for physicians and other advanced life support personnel

Background

Multiple trauma in mountain environments may be associated with increased morbidity and mortality compared to urban environments.

Objective

To provide evidence based guidance to assist rescuers in multiple trauma management in mountain environments.

Eligibility criteria

All articles published on or before September 30th 2019, in all languages, were included. Articles were searched with predefined search terms.

Sources of evidence

PubMed, Cochrane Database of Systematic Reviews and hand searching of relevant studies from the reference list of included articles.

Charting methods

Evidence was searched according to clinically relevant topics and PICO questions.

Results

Two-hundred forty-seven articles met the inclusion criteria. Recommendations were developed and graded according to the evidence-grading system of the American College of Chest Physicians. The manuscript was initially written and discussed by the coauthors. Then it was presented to ICAR MedCom in draft and again in final form for discussion and internal peer review. Finally, in a face-to-face discussion within ICAR MedCom consensus was reached on October 11th 2019, at the ICAR fall meeting in Zakopane, Poland.

Conclusions

Multiple trauma management in mountain environments can be demanding. Safety of the rescuers and the victim has priority. A crABCDE approach, with haemorrhage control first, is central, followed by basic first aid, splinting, immobilisation, analgesia, and insulation. Time for on-site medical treatment must be balanced against the need for rapid transfer to a trauma centre and should be as short as possible. Reduced on-scene times may be achieved with helicopter rescue. Advanced diagnostics (e.g. ultrasound) may be used and treatment continued during transport.

Incidence of Pediatric Cervical Spine Injuries in Iraq and Afghanistan

Cervical spine injuries in pediatric trauma patients are uncommon, and subsequently, proper diagnosis and the efficacy of spinal motion restriction in these patients remain a subject of contention. The aim of this study was to describe the incidence of cervical spine injuries in pediatric patients in Iraq and Afghanistan.

Objective

Military providers frequently treat civilians, including pediatric patients. Cervical spine injuries in pediatric trauma patients occur infrequently, with limited data on the incidence. The aim of this study was to describe the incidence of cervical spine injuries in pediatric patients in Iraq and Afghanistan.

Methods

We queried the Department of Defense Trauma Registry for all pediatric encounters from January 2007 to January 2016. We searched within that dataset for all cervical spine fractures.

Results

From January 2007 through January 2016 there were 3439 pediatric encounters. There were 36 subjects identified (1.0%) with a cervical spine fracture. Of those with a cervical spine fracture, 6 (17%) had a prehospital cervical collar placed, which did not improve survival to hospital discharge (collar, 66.7% vs no collar, 83.3%, P = 0.573). Of those with a cervical spine fracture, 6 (17%) had a documented spinal cord injury. The median age of subjects with a cervical spine fracture was 9.5 years and the majority (63.9%) were male. Most were injured by explosion (41.7%). The median composite injury score was higher in subjects with a cervical spine fracture compared with those without one (16.5 vs 10, P < 0.001). Subjects with a cervical spine fracture had longer lengths of stay in the intensive care unit (median 3 days vs 1, P = 0.012) and a trend toward worse survival to hospital discharge (80.6%, n = 29, vs 90.3%, n = 3074, P = 0.079).

Conclusions

Cervical spine injuries occurred infrequently in pediatric patients in Iraq and Afghanistan. When a fracture was present, almost one in five patients had spinal cord involvement. The pediatric prehospital literature would benefit from the development of a clinical decision tool to guide prehospital personnel as to when a cervical collar is indicated. Moreover, appropriate size equipment should be available when caring for host national civilians.

Cervical Spine Injury in Burned Trauma Patients: Incidence, Predictors, and Outcomes

Cervical spine injuries (CIs) carry significant morbidity and mortality; hence, cervical spine immobilization is used liberally in trauma patients, including burns. The incidence, predictors, and outcomes of CI in burn patients are unknown. A retrospective cohort from the National Trauma Data Bank between 2007 and 2012 included all burned patients with and without CI. Predictors of CI were identified by logistic regression. Outcomes with and without CI were compared with Wilcoxon rank sum test. A total of 94,964 patients were identified with burn injuries. The incidence of CI was 0.79% (n = 745). Mechanism of injury, age, and injury severity score (ISS) were significant predictors of CI. Odds of CI were 109.4 (95% CI: 61.2-195.3, P < .0001) for motor vehicle injury, 87.8 (95% CI: 47.0-164.0, P < .0001) for falls, 1.2 (95% CI: 0.6-2.3, P = .66) for fire/flame, and 2.4 (95% CI: 1.0-5.5, P < .0001) for explosion compared with reference of hot object/substance. For every year increase in age, there were 1.02 higher odds of CI (95% CI: 1.01-1.02, P < .0001). For each point increase in ISS, there were 1.05 higher odds of CI (95% CI: 1.04-1.05, P < .0001). Patients with CI had higher mortality (10.3% vs 2.9%, P < .0001), longer total length of stay (12.0 vs 2.0 days, P < .0001), intensive care unit length of stay (4.0 vs 0.0 days, P < .001), and ventilator days (1.0 vs 0.0 days, P < .0001). The incidence of CI in burn patients is low, especially when due to fire, flame, or scalds; however, CI is associated with higher mortality and worse outcomes.

Presenting Characteristics Associated With Outcome in Children With Severe Traumatic Brain Injury: A Secondary Analysis From a Randomized, Controlled Trial of Therapeutic Hypothermia

OBJECTIVES

To identify injury patterns and characteristics associated with severe traumatic brain injury course and outcome, within a well-characterized cohort, which may help guide new research and treatment initiatives.

DESIGN

A secondary analysis of a phase 3, randomized, controlled trial that compared therapeutic hypothermia versus normothermia following severe traumatic brain injury in children.

SETTING

Fifteen sites in the United States, Australia, and New Zealand.

PATIENTS

Children (< 18 yr old) with severe traumatic brain injury.

MEASUREMENTS AND MAIN RESULTS

Baseline, clinical, and CT characteristics of patients (n = 77) were examined for association with mortality and outcome, as measured by the Glasgow Outcome Scale-Extended Pediatric Revision 3 months after traumatic brain injury. Data are presented as odds ratios with 95% CIs. No demographic, clinical, or CT characteristic was associated with mortality in bivariate analysis. Characteristics associated with worse Glasgow Outcome Scale-Extended Pediatric Revision in bivariate analysis were two fixed pupils (14.17 [3.38-59.37]), abdominal Abbreviated Injury Severity score (2.03 [1.19-3.49]), and subarachnoid hemorrhage (3.36 [1.30-8.70]). Forward stepwise regression demonstrated that Abbreviated Injury Severity spine (3.48 [1.14-10.58]) and midline shift on CT (8.35 [1.05-66.59]) were significantly associated with mortality. Number of fixed pupils (one fixed pupil 3.47 [0.79-15.30]; two fixed pupils 13.61 [2.89-64.07]), hypoxia (5.22 [1.02-26.67]), and subarachnoid hemorrhage (3.01 [1.01-9.01]) were independently associated with worse Glasgow Outcome Scale-Extended Pediatric Revision following forward stepwise regression.

CONCLUSIONS

Severe traumatic brain injury is a clinically heterogeneous disease that can be accompanied by a range of neurologic impairment and a variety of injury patterns at presentation. This secondary analysis of prospectively collected data identifies several characteristics associated with outcome among children with severe traumatic brain injury. Future, larger trials are needed to better characterize phenotypes within this population.

Decreasing Radiation Exposure in Pediatric Trauma Related to Cervical Spine Clearance: A Quality Improvement Project

STUDY DESIGN

Quality improvement project.

OBJECTIVES

Reduce the amount of radiation exposure in the pediatric trauma population 5 years of age and older in relation to cervical spine clearance.

BACKGROUND

The evaluation of pediatric cervical spine injuries must be accurate and timely to avoid missed injuries. The difficult clinical examination in pediatric trauma patients necessitates the use of radiologic examinations to avoid missing catastrophic injuries. However, exposure to radiation at an early age increases the pediatric patients' risk of developing cancer (R. A. ).

METHODS

A retrospective chart review was conducted to assess radiation exposure in pediatric patients requiring evaluation for cervical spine clearance. Surgical staff and emergency department physicians received education on the risks related to pediatric radiation exposure and information related to the institution's diagnostic trends for cervical spine clearance. An algorithm was then developed to assist with determining the necessary imaging study for cervical spine clearance. Radiation exposure was monitored following initial education and use of the algorithm to determine its effect on radiation exposure.

RESULTS

The retrospective chart review identified cervical spine computed tomography (CT) in 34%, with an average radiation exposure of 3.5 mSv. Following education and introduction of an algorithm, 18% of patients underwent CT for cervical spine clearance with an average radiation exposure of 3.2 mSv, representing a 47% decrease in the use of CT.

CONCLUSION

Staff education and the use of an algorithm show promise in the reduction of radiation exposure and provide safe, effective clearance of the cervical spine in pediatric trauma.

Missed cervical spine injuries: a national survey of the practice of evaluation of the cervical spine in confused and comatose patients

AIM

Identifying cervical spine injuries in confused or comatose patients with multiple injuries provides a diagnostic challenge. Our aim was to investigate the protocols which are used for the clearance of the cervical spine in these patients in English hospitals.

PATIENTS AND METHODS

All hospitals in England with an Emergency Department were asked about the protocols which they use for assessing the cervical spine. All 22 Major Trauma Centres (MTCs) and 141 of 156 non-MTCs responded (response rate 91.5%).

RESULTS

Written guidelines were used in 138 hospitals (85%). CT scanning was the first-line investigation in 122 (75%). A normal CT scan was sufficient to clear the cervical spine in 73 (45%). However, 40 (25%) would continue precautions until the patient regained full consciousness. MRI was performed in all confused or comatose patients with a possible cervical spinal injury in 15 (9%). There were variations in the grade and speciality of the clinician who had responsibility for deciding when to discontinue precautions. A total of 31 (19%) reported at least one missed cervical spinal injury following discontinuation of spinal precautions within the last five years. Only 93 (57%) had a formal mechanism for reviewing missed injuries.

TAKE HOME MESSAGE

There are significant variations in protocols and practices for the clearance of the cervical spine in multiply injured patients in acute hospitals in England. The establishment of trauma networks should be taken as an opportunity to further standardise trauma care. Cite this article: Bone Joint J 2016;98-B:825-8.

Heterogeneity in cervical spine assessment in paediatric trauma: A survey of physicians' knowledge and application at a paediatric major trauma centre

OBJECTIVE

Evidence-based decision-making tools are widely used to guide cervical spine assessment in adult trauma patients. Similar tools validated for use in injured children are lacking. A paediatric-specific approach is appropriate given important differences in cervical spine anatomy, mechanism of spinal injury and concerns over ionising radiation in children. The present study aims to survey physicians' knowledge and application of cervical spine assessment in injured children.

METHODS

A cross-sectional survey of physicians actively engaged in trauma care within a paediatric trauma centre was undertaken. Participation was voluntary and responses de-idenitified. The survey comprised 20 questions regarding initial assessment, imaging, immobilisation and perioperative management. Physicians' responses were compared with available current evidence.

RESULTS

Sixty-seven physicians (28% registrars, 17% fellows and 55.2% consultants) participated. Physicians rated altered mental state, intoxication and distracting injury as the most important contraindications to cervical spine clearance in children. Fifty-four per cent considered adequate plain imaging to be 3-view cervical spine radiographs (anterior-posterior, lateral and odontoid), whereas 30% considered CT the most sensitive modality for detecting unstable cervical spine injuries. Physicians' responses reflected marked heterogeneity regarding semi-rigid cervical collars and what constitutes cervical spine 'clearance'. Greater consensus existed for perioperative precautions in this setting.

CONCLUSIONS

Physicians actively engaged in paediatric trauma care demonstrate marked heterogeneity in their knowledge and application of cervical spine assessment. This is compounded by a lack of paediatric-specific evidence and definitions, involvement of multiple specialties and staff turnover within busy departments. A validated decision-making tool for cervical spine assessment will represent an important advance in paediatric trauma.

Cervical spine collar clearance in the obtunded adult blunt trauma patient: a systematic review and practice management guideline from the Eastern Association for the Surgery of Trauma

BACKGROUND

With the use of the framework advocated by the Grading of Recommendations Assessment, Development and Evaluation (GRADE) Working Group, our aims were to perform a systematic review and to develop evidence-based recommendations that may be used to answer the following PICO [Population, Intervention, Comparator, Outcomes] question:In the obtunded adult blunt trauma patient, should cervical collar removal be performed after a negative high-quality cervical spine (C-spine) computed tomography (CT) result alone or after a negative high-quality C-spine CT result combined with adjunct imaging, to reduce peri-clearance events, such as new neurologic change, unstable C-spine injury, stable C-spine injury, need for post-clearance imaging, false-negative CT imaging result on re-review, pressure ulcers, and time to cervical collar clearance?

METHODS

Our protocol was registered with the PROSPERO international prospective register of systematic reviews on August 23, 2013 (REGISTRATION NUMBER: CRD42013005461). Eligibility criteria consisted of adult blunt trauma patients 16 years or older, who underwent C-spine CT with axial thickness of less than 3 mm and who were obtunded using any definition.Quantitative synthesis via meta-analysis was not possible because of pre-post, partial-cohort, quasi-experimental study design limitations and the consequential incomplete diagnostic accuracy data.

RESULTS

Of five articles with a total follow-up of 1,017 included subjects, none reported new neurologic changes (paraplegia or quadriplegia) after cervical collar removal. There is a worst-case 9% (161 of 1,718 subjects in 11 studies) cumulative literature incidence of stable injuries and a 91% negative predictive value of no injury, after coupling a negative high-quality C-spine CT result with 1.5-T magnetic resonance imaging, upright x-rays, flexion-extension CT, and/or clinical follow-up. Similarly, there is a best-case 0% (0 of 1,718 subjects in 11 studies) cumulative literature incidence of unstable injuries after negative initial imaging result with a high-quality C-spine CT.

CONCLUSION

In obtunded adult blunt trauma patients, we conditionally recommend cervical collar removal after a negative high-quality C-spine CT scan result alone.

LEVEL OF EVIDENCE

Systematic review, level III.

Spinal clearance in unconscious children following traumatic brain injury

Spinal clearance in unconscious children following traumatic brain injury is an area of controversy. The risk of significant injury in this high-risk group needs to be balanced against that of prolonged spinal immobilization and all its implications. No national or international guideline exists to aid clinicians faced with such a scenario. This article reviews traumatic spinal injury in children looking at prevalence, risk factors, anatomical considerations, and radiological investigation. Spinal immobilization is discussed along with the use of appropriate and targeted radiological investigations to aid clearance.