Amniotic Fluid Tumor Necrosis Factor-Alpha Is a Marker for the Prediction of Early-Onset Neonatal Sepsis in Preterm LaborPark K.H. · Yoon B.H. · Shim S.-S. · Jun J.K. · Syn H.C.
Departments of Obstetrics and Gynecology, College of Medicine, Seoul National University, Seoul, Korea
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Background: Our purpose was to determine whether amniotic fluid concentrations of tumor necrosis factor-α are of value in the prediction of early-onset neonatal sepsis (proven or suspected) in patients with preterm labor and intact membranes. Methods: The relationship between amniotic fluid tumor necrosis factor-α concentrations and early-onset neonatal sepsis was examined in 59 consecutive patients with preterm labor and intact membranes who delivered preterm neonates within 72 h after transabdominal amniocentesis. Early-onset neonatal sepsis was defined either as the presence of a positive blood culture or as suspected sepsis within 72 h of delivery. Tumor necrosis factor-α was determined by enzyme-linked immunosorbent assays. Results: Patients delivering neonates with early-onset neonatal sepsis had significantly higher median amniotic fluid TNF-α concentrations than patients delivering neonates without early-onset neonatal sepsis (p < 0.0005). An amniotic fluid tumor necrosis factor-α concentration ≧41 pg/ml had a sensitivity of 82% (23/29) and specificity of 79% (38/48) in the prediction of early-onset neonatal sepsis. Multiple logistic regression indicated that elevated amniotic fluid tumor necrosis factor-α (≧41 pg/ml) was the only independent predictor of early-onset neonatal sepsis (odds ratio 12.9, 95% confidence interval 1.3–125.3, p = 0.01) after correction for known confounding variables. Conclusions: (1) Amniotic fluid tumor necrosis factor-α is a marker for the prediction of early-onset neonatal sepsis in patients with preterm labor and intact membranes. (2) Amniotic fluid tumor necrosis factor-α is a better independent predictor of early-onset neonatal sepsis than placental histologic finding or amniotic fluid culture.
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