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Strahlenwirkungen

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Identifying patients at risk for intracranial and extracranial blunt carotid injuries

BACKGROUND: Blunt carotid injuries are rare, often occult, and potentially devastating. Angiographic screening programs have detected this injury in up to 1% of blunt trauma patients. Implementing a liberal angiographic screening program at our hospital is impractical and we want to identify a high-risk group to target for screening. We hypothesize that intracranial and extracranial carotid injuries have different risks, presentations, and outcomes. METHODS: Patients with intracranial and extracranial carotid injuries were identified from the British Columbia trauma registry. Presentation and outcome were reviewed. To facilitate statistical modeling the analysis was done by matching cases to 5 randomly selected controls. Risk factors for injury were evaluated by univariate and multiple logistic regression. RESULTS: A total of 35 carotid injuries were identified. Thirteen intracranial injuries were identified in 10 patients. Twenty-two extracranial injuries were identified in 18 patients. Sixty-seven percent of patients with intracranial injuries and 31% of those with extracranial injuries died (P = 0.11). Eleven percent of intracranial injuries and 56% of extracranial injuries were occult (P = 0.04). Glasgow outcome scores were 2.04 intracranial and 3.12 extracranial (P = 0.18). For intracranial injuries the multiple variable predictive model had two predictors: Glasgow Coma Score or =3). CONCLUSIONS: Intracranial injuries were frequently detected on initial investigations and have very poor outcomes. Extracranial injuries were more frequently occult and stand to benefit from early detection by screening programs. As independent risk factors for these two injuries differ, limited screening resources should focus on risk factors for occult extracranial injury: namely, low GCS and significant thoracic injury.     

Variability of pressure at the pressure garment-scar interface in children after burn: A pilot longitudinal cohort study

Background

Current consensus for the ideal pressure range at the pressure garment to scar interface is 15–25 mmHg. Interface pressure variability has been reported at new pressure garment fitting in children. Pressure reductions up to 25% have been recorded over one month in adults.