• Ling Jiang, Shao-Hua Lin, Jun Wang, and Cun-Kun Chu.
• Department of Clinical Laboratory Center, Rongcheng Hospital Affiliated to Shandong First Medical University, Rongcheng, P.R. China.
• Medicine (Baltimore). 2021 Jul 9; 100 (27): e26555e26555.

BackgroundThe patient suffering from urinary sepsis is often accompanied by elevated serum procalcitonin (PCT) levels and a decline in the average platelet count (PLT), which could result in a poor prognosis. This study aimed to evaluate the value of PCT and PLT in determining the severity of urinary sepsis.MethodsA total of 120 urosepsis patients enrolled were divided into a survival group and a death group, respectively, according to their status within 14 days after admission. Changes in PCT and PLT levels between the 2 groups were compared at different time points. A receiver operating characteristic (ROC) curve was eventually obtained to predict the prognostic value of PCT and PLT.ResultsThe PCT levels in the survival group declined gradually after admission, and the PLT decreased at first but increased rapidly in subsequence. The PCT level in the death group, however, declined in a flat-slope trend or was hardly noticeable together with the number of PLT reduced significantly. In particular, it is on the 3rd day that PCT tended to positively correlate with acute physiological and chronic health score II (APACHE II) score (r = 0.730, P < .05), but negatively with PLT (r = 0.472, P < .05). The APACHE II score and PLT (r = 0.612, P < .05) were also negatively correlated with each other. As indicated by the ROC curve, the PCT level on the 3rd day after admission was of great value for the clinical mortality prognosis, and the area under the curve was 0.858. Moreover, PLT also has a high predictive value for prognosis. Area under the curve is 0.951. When the PLT was more than 51 × 109 /L, the sensitivity was up to 90%, and the specificity was 90%.ConclusionPLT and PCT levels are closely related to the APACHE II score, which could indicate the severity of urosepsis in patients. The contribution of this study was to confirm that dynamic monitoring of the changes in PCT and PLT helps determine the prognosis of urosepsis patients.Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.

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