Clinical and laboratory observationsHypothyroxinemia and Risk for Transient Tachypnea of Newborn

Transient tachypnea of newborn is associated with hypothyroxinemia in animals via decreased stimulation of beta-adrenergic receptors and Na-K-ATPase activity. In 26 549 term neonates, serum total thyroxine <14 ug/dL, male sex, and elective cesarean delivery were significantly associated with greater risk for transient tachypnea of newborn.