| Summary: | Objective: The prognosis of preterm premature rupture of membranes (PPROM) combined with chorioamnionitis is often unsatisfactory for both mother and newborn. Although tragic outcomes can be avoided if treated early, no effective prediction method for decision-making is available currently. This study aimed to establish an effective method with maternal inflammation indexes to predict preterm premature rupture of membranes with concomitant chorioamnionitis. Materials and methods: This retrospective study examined the data of 206 singleton PPROM cases and 60 normal full-term cases. The PPROM cases included 93 cases of PPROM with chorioamnionitis and 113 cases of PPROM without chorioamnionitis based on clinical manifestations, laboratory examinations, and histopathological diagnosis. Normal full-term cases were included as the control group. Peripheral blood levels of selected inflammatory indicators were observed 12 h after fetal membrane rupture. Associations between selected inflammatory indicators and chorioamnionitis diagnosis were analyzed. Results: Selected factors except for procalcitonin predicted chorioamnionitis in PPROM patients. Combined results of C-reactive protein and white blood cell (WBC) count showed best predictive ability with area under curve, sensitivity, and specificity of 0.702, 60.22%, and 76.11%, respectively. Furthermore including Interleukine-6 and neutrophil count provided similar predictive results. Conclusions: The best predictive factor combinations for PPROM-CAM were C-reactive protein and white blood cell count. Results of this study provide a useful clinical reference for PPROM-CAM and may improve maternal and infant prognostic outcomes.
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