Fetus lungs not mature at 37 weeks

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Back to Health A to Z. Newborn respiratory distress syndrome NRDS happens when a baby's lungs are not fully developed and cannot provide enough oxygen, causing breathing difficulties. This substance, made up of proteins and fats, helps keep the lungs inflated and prevents them collapsing.

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Please sign in or sign up for a March of Dimes account to proceed. The conditions listed may not be relevant to your baby's situation. We encourage you to read only what you feel would be helpful to you and your child's particular circumstances.

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Babies born before week 37 of pregnancy are considered preterm. Preterm babies face a higher risk for one or more complications after delivery. However, not all babies develop at the same rate, so there can be exceptions.

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Albert Reece said in an interview. More importantly, he said, the study suggests that current definitions of what constitute a term birth may need to be reconsidered. However, if the results of this study are to be believed, they suggest that babies born before 39 weeks of gestation might be considered preterm as well.

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Respiratory distress syndrome RDS is a common problem in premature babies. It causes babies to need extra oxygen and help with breathing. The course of illness with RDS depends on:.

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Other terms used for prematurity are preterm and preemie. The number of premature births in the U. S increased from to and has since been declining. They may be called low birth weight.

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Respiratory distress syndrome RDS remains a major cause of perinatal morbidity and mortality in premature infants. However, ACOG based such recommendations primarily on studies carried out prior to the routine use of antenatal corticosteroids to accelerate lung maturity and the liberal use of ultrasound to confirm gestational age. Recent studies suggest that testing for fetal lung maturity at more advanced gestational ages is neither reliable nor cost effective.

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To compare outcomes among neonates delivered after documentation of fetal lung maturity prior to 39 weeks and those delivered at 39 or 40 weeks. Women with major congenital anomalies, cord prolapse, non-reassuring antepartum testing, placental abruption, or oligohydramnios were excluded. A primary composite neonatal outcome included death, adverse respiratory outcomes, hypoglycemia, treated hyperbilirubinemia, generalized seizures, necrotizing enterocolitis, hypoxic ischemic encephalopathy, periventricular leukomalacia, and suspected or proven sepsis. The risk of the composite adverse neonatal outcome was 6.

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