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.
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To determine if thyroid function, particularly free T4, is associated with severity of illness in term and near term infants with respiratory distress who require endotracheal intubation or nasal CPAP.
Timeframe: Birth until 120 hours of life