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  • Title: Urine dipstick testing to rule out rhabdomyolysis in patients with suspected heat injury.
    Author: Young SE, Miller MA, Docherty M.
    Journal: Am J Emerg Med; 2009 Sep; 27(7):875-7. PubMed ID: 19683121.
    Abstract:
    BACKGROUND: Heat injury is a common, potentially life-threatening medical condition. In austere or mass-casualty conditions an easy to use, sensitive screening test could be a valuable tool to care providers and evacuation planners. OBJECTIVE: The objective of the study was to determine if a simple urine dipstick test for blood is sensitive for detection of rhabdomyolysis in the suspected heat injury patient. MATERIAL AND METHODS: A convenience sample of patients presenting to a military community hospital Emergency Department during summer months with a presenting complaint consistent with suspected heat injury had urine dipstick testing performed for blood and compared with the results of formal urinalysis and serum creatine kinase. RESULTS: 60 patients were enrolled in the study, seven had creatine kinase levels greater than 1000 U/L, 14 had levels greater than 500 U/L, and 26 had levels greater than 250 U/L. Using 1000 U/L, urine dipstick testing had a sensitivity of 14% and a specificity of 85%. CONCLUSIONS: Urine dipstick testing for blood is not a useful screening test for rhabdomyolysis in patients suspected to have significant heat injury.
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