WHAT'S KNOWN ON THIS SUBJECT: Head injuries and concern for skull fracture are common in pediatrics. Point-of-care ultrasound is an imaging tool that can be used to diagnose fractures. However, there are scant data regarding the accuracy of point-ofcare ultrasound in skull fracture diagnosis.
WHAT THIS STUDY ADDS:Clinicians with focused point-of-care ultrasound training are able to diagnose skull fractures in children with high specificity. Ultrasound may be valuable to diagnose skull fractures in children at the point of care. abstract OBJECTIVE: To determine the test performance characteristics for point-of-care ultrasound performed by clinicians compared with computed tomography (CT) diagnosis of skull fractures.
METHODS:We conducted a prospective study in a convenience sample of patients #21 years of age who presented to the emergency department with head injuries or suspected skull fractures that required CT scan evaluation. After a 1-hour, focused ultrasound training session, clinicians performed ultrasound examinations to evaluate patients for skull fractures. CT scan interpretations by attending radiologists were the reference standard for this study. Pointof-care ultrasound scans were reviewed by an experienced sonologist to evaluate interobserver agreement.RESULTS: Point-of-care ultrasound was performed by 17 clinicians in 69 subjects with suspected skull fractures. The patients' mean age was 6.4 years (SD: 6.2 years), and 65% of patients were male. The prevalence of fracture was 12% (n = 8). Point-of-care ultrasound for skull fracture had a sensitivity of 88% (95% confidence interval [CI]: 53%-98%), a specificity of 97% (95% CI: 89%-99%), a positive likelihood ratio of 27 (95% CI: 7-107), and a negative likelihood ratio of 0.13 (95% CI: 0.02-0.81). The only false-negative ultrasound scan was due to a skull fracture not directly under a scalp hematoma, but rather adjacent to it. The k for interobserver agreement was 0.86 (95% CI: 0.67-1.0).
CONCLUSIONS:Clinicians with focused ultrasound training were able to diagnose skull fractures in children with high specificity. Pediatrics