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  • Title: Low-risk criteria for pelvic radiography in pediatric blunt trauma patients.
    Author: Wong AT, Brady KB, Caldwell AM, Graber NM, Rubin DH, Listman DA.
    Journal: Pediatr Emerg Care; 2011 Feb; 27(2):92-6. PubMed ID: 21252812.
    Abstract:
    CONTEXT: The American College of Surgeons recommends that any patient with blunt trauma undergoes radiographic evaluation, including a radiograph of the pelvis. Studies have questioned the use of such routine pelvic radiographs (PXR) in pediatrics. Selective elimination of PXR would save time, money and unshielded radiation exposure to the gonads. OBJECTIVE: To determine if a defined set of historical and clinical factors could predict low risk for pelvic fracture and incorporate these factors into a clinical decision guideline. DESIGN, SETTING, AND PATIENTS: A retrospective chart review of all blunt trauma patients 25 years or younger in whom a PXR was obtained from January 2002 to June 2006 presenting to an urban level 1 trauma center. A total of 579 patients underwent 580 trauma evaluations. MAIN OUTCOME MEASURES: Variables including sex, mechanism of injury, Glascow Coma Score, Pediatric Trauma Score, fall height, lower extremity injury, blood on rectal examination, blood at meatus, and clinical need for computed tomography (CT) were compared with outcomes of pelvic fracture and pelvic fracture requiring surgical intervention. RESULTS: There were 22 pelvic fractures identified, resulting in a fracture rate of 4%. The negative predictive value for pelvic fracture was 98.3% (95% confidence interval [95% CI], 96.9%-99.2%) if no lower extremity injury was present, 99% (95% CI, 98.2%-99.6%) if physical examination of the pelvis was normal, and 99.5% (95% CI, 98.6%-99.9%) if there was no need for abdominopelvic CT. The negative predictive value was 100% (95% CI, 98.8%-100%) if any one of these 3 factors is present. CONCLUSIONS: Using the clinical findings of (1) lack of lower extremity injury, (2) lack of an abnormal physical examination of the pelvis, and (3) no need for abdominopelvic CT, pelvic fracture can be reliably excluded. Pelvic radiography can be eliminated in the evaluation of these patients, potentially decreasing time expenditure, radiation exposure, and cost.
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