TABLE 2.

Characteristics of Study Neonates

SymptomaticAsymptomaticP Value
No. of neonates38818
Gender (M:F)25:13433:385.12
Birth weight, g3631 ± 543*3452 ± 465.45
Gestational age, wk40 (36–42)40 (35–43).27
Umbilical artery pH7.25 (7.07–7.37)7.24 (6.86–7.43).12
Umbilical artery Pco2, mm Hg57.5 (37–89)57.0 (20–114).11
Umbilical artery base, mEq/L−3.8 (−11.7 to 2.1)−4.5 (−20.5 to 13.1).06
Meconium-stained amniotic fluid, %3925.14
Apgar scores
 1 min8 (4–9)8 (1–9).002
 5 min9 (8–9)9 (6–10).58
Resuscitation at delivery, %
 Bag-mask ventilation238.002
 Naloxone50.3.005
 Intubation for meconium50.6.03
 Meconium below the vocal cords00NA
Duration of antibiotic therapy, h159 (87–202)46 (20–84)<.001
Duration of hospitalization, d6.9 (4.7–8.7)2.6 (2.0–10.2)§<.001
  • NA indicates not applicable.

  • * Mean ± standard deviation.

  • Values are medians; numbers in parentheses represent the range.

  • By the Mann-Whitney test, higher in the asymptomatic group.

  • § The extended range reflects prolonged hospitalization in 85 neonates as a result of maternal complications.