Serum Thyroid Hormone Levels in Preterm Infants Born before 33 Weeks of Gestation and Association of Transient Hypothyroxinemia with Postnatal Characteristics

Abstract

In preterm infants below 30 wk, thyroid hormones were lower and urinary iodine values were higher compared to infants with older gestational age. THOP at the first wk of life may convey important prognostic information about neonatal morbidity and length of hospitalization stay.