Neonatal Care Recommendations for Infants Exposed to Maternal Chorioamnionitis

Neonatal Diagnostic Evaluation

The CDC (MMWR) recommends that all well‑appearing newborns born to mothers with suspected chorioamnionitis obtain a blood culture and a complete blood count with differential immediately after birth. 1
According to the CDC (MMWR), chest radiography and lumbar puncture are not required in well‑appearing infants unless clinical signs of sepsis develop. 1
For neonates who display signs of sepsis, the CDC (MMWR) advises a full diagnostic work‑up, including blood culture, CBC with differential and platelet count, chest radiograph if respiratory symptoms are present, and lumbar puncture if the infant is hemodynamically stable. 1

The CDC (MMWR) and the American Academy of Pediatrics (Pediatrics) both endorse initiating empiric intravenous ampicillin combined with an aminoglycoside (e.g., gentamicin) for all well‑appearing infants exposed to chorioamnionitis while awaiting culture results. [1][2]
In neonates with clinical sepsis, the same regimen—IV ampicillin (active against Group B Streptococcus) plus an aminoglycoside (active against E. coli and other gram‑negative organisms)—should be started promptly. This recommendation is supported by the CDC (MMWR) and the American Academy of Pediatrics. [1][2]

The American College of Obstetricians and Gynecologists (as reported in the American Journal of Obstetrics and Gynecology) cautions that amoxicillin‑clavulanate should not be used for prophylaxis in preterm premature rupture of membranes because it is associated with an increased risk of neonatal necrotizing enterocolitis. 3