3 Clinical Trials for Various Conditions
The investigators hypothesize that continuous infusion of 4 µg/Kg/day T4 with 30 µg/Kg/day oral potassium iodide (KI) for 42 days from birth will reduce by 30% or more (from an estimated 30% to 21%) the proportion of extremely low gestational age subjects with a composite endpoint of "cerebral palsy (CP) or a Bayley III Composite Cognitive Score \< 85" at 36 months corrected postnatal age (CA).
Transient hypothyroxinemia (TH) is a condition characterized by low levels of serum thyroxine (T4) and normal levels of thyroid stimulating hormone (TSH). TH in premature infants has been found to be related to severity of illness. T4 levels in very low birth weight infants born prematurely has been found to be inversely correlated to severity of illness. In very low birth weight infants, TH has been associated with poor outcomes. Little is known about thyroid function in late preterm infants. Hypotheses: 1. Ill late preterm infants will have lower total T4 levels than healthy late preterm infants. 2. Total T4 and possibly TSH levels will be inversely correlated with short-term outcomes. 3. Late Preterm infants born by cesarean section will have lower T4 levels compared to those born by vaginal birth.
This study was designed to evaluate the level of certain hormones (thyroid hormones and cortisol) in full term or close to full term infants who have respiratory distress severe enough to require respiratory support. The purpose of this study is to determine if there is a relationship between these hormone levels and how sick these infants are who require help with breathing following birth. Hypothesis: Infants who are born full term or near full term and who have low hormone levels will have higher severity of illness.