Definition of adverse neonatal outcome.

CNS: central nervous system; PULM: pulmonary; CPAP: continuous positive airway pressure; GI: gastrointestinal; HEME: hematology; NICU: neonatal intensive care unit.†Proven neonatal sepsis: positive blood culture results (≤72 hours of delivery).Suspected neonatal sepsis: presence of ≥2 of the following criteria, in the absence of a positive blood culture (≤72 hours of delivery); white blood cell count ≤5000 cells/mm3 or ≥24,000 cells/mm3, polymorphonuclear leukocyte count ≤1800 cells/mm3, ratio of band cells to total neutrophils ≥0.2, positive results of gastric aspiration for polymorphonuclear leukocytes showing ≥5 white blood cells per high power field, erythrocyte sedimentation rate ≥15 mm/min, positive result of C-reactive protein assay, platelet count ≤80,000 cells/mm3, or the presence of meningitis, urinary tract infection, or pneumonia as proven by culture.