[Value of @entity1851 level in the detection of XXXX in acute @entity788 ].

@entity1 @entity788 @entity656 @entity39 @entity167 @entity158 @entity9279 @entity1851
OBJECTIVES: To evaluate the utility of @entity1851 ( @entity1851 ) in the detection of @entity39 in acute @entity788 and to determine the best cut-off point for @entity1851 used for this purpose. MATERIAL AND METHODS: We performed a retrospective study of 157 @entity1 with acute @entity788 who underwent computed tomography (CT) with intravenous contrast material between 72 h and 8 days after the onset of symptoms and whose serum @entity1851 values were determined by nephelometry 24 h or later after the onset of @entity158 . RESULTS: Ninety-four @entity1 were @entity1 and 63 were @entity1 , with a mean age of 61 years (range, 15-96 years). The cause of @entity788 was @entity9279 in 53.5%, @entity167 in 20.4%, and idiopathic in 10.8%. Other causes were found in 15.3%. The mean (standard deviation) time elapsed between symptom onset and extraction to evaluate @entity1851 was 3.21 (1.7) days. The @entity1 were divided into two groups according to the results of CT: 132 @entity1 with acute intersitial @entity788 and 25 @entity1 with @entity656 . The mean @entity1851 concentrations were: 322 mg/l (range, 10.7-538) in @entity1 with @entity656 and 133 mg/l (range, 3-442) in those with acute @entity788 ; this difference was statistically significant (p < 0.001). The area under the ROC curve of @entity1851 vs. the occurrence of @entity39 was 0.862 (95% CI, 0.778, 0.946). To evaluate the presence of @entity39 a cut-off level of 200 mg/l showed a sensitivity of 88% and a specificity of 75% while a cut-off level of 279 mg/l presented a sensitivity of 72% and a specificity of 88%. CONCLUSIONS: In acute @entity788 , a @entity1851 value of less than or equal to 200 mg/l obtained at 72 h of symptom onset is useful for ruling out, with a high degree of probability, the presence of @entity39 . With higher values, additional investigations should be performed to determine the presence of @entity39 ; nevertheless, with values higher than 279 mg/l the risk of @entity39 markedly increases.
