Full term pregnancy lasts for 40 weeks. This gives the fetus time to grow. At 40 weeks, the baby's organs are usually fully developed. But before this, if the baby is born too early, his lungs are not fully developed and they are not able to function properly. Healthy lungs are important for overall health. Neonatal respiratory distress syndrome or newborn babies may have trouble breathing if the lungs are not fully developed. It usually occurs in premature babies. Newborn babies with RDS have difficulty breathing normally.
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