The purpose of this observational study is to measure pulmonary function in term and preterm infants with and without pulmonary disease including respiratory distress syndrome, bronchopulmonary dysplasia, transient tachypnea of the newborn, meconium aspiration syndrome, and response to treatments given to newborn infants with lung diseases using a non-invasive airway oscillometry system.
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Area Under the Reactance Curve (AXR)
Timeframe: 40 weeks' postmenstrual age or discharge until 2 years