How is chorioamnionitis diagnosed?

Updated: May 08, 2018
  • Author: Fayez M Bany-Mohammed, MD; Chief Editor: Ted Rosenkrantz, MD  more...
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During the intrapartum period, diagnosis of chorioamnionitis is usually based on clinical criteria. This is particularly true for pregnancies at term. Chorioamnionitis or intraamniotic infection, as etiologies for preterm labor and preterm premature rupture of the membranes (PPROM), should always be considered. Silent chorioamnionitis is recognized as an important cause of premature labor and PPROM. [5, 158]

To diagnose silent or obvious amniotic fluid infection or chorioamnionitis, the physician often uses laboratory examinations of the amniotic fluid, maternal blood, maternal urine, or a combination of these.

Bacteriologic cultures of amniotic fluid and urogenital discharge may be diagnostic for causative pathogens. Investigators suggest that obtaining cervical cultures or performing frequent digital examination increases the risk of initiating amniotic fluid infection in the presence or absence of ruptured membranes.

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