Meconium aspiration rarely leads to permanent lung damage. Lack of oxygen in the uterus or from complications of meconium aspiration may lead to brain damage. An infant with severe aspiration who requires a breathing machine may have a more guarded outcome. However, rapid breathing may persist for days. In more severe cases, breathing problems may occur, though they generally go away in two to four days. In most cases, the outlook is excellent and there are no bad side effects. If there have been no signs of fetal distress during pregnancy and the baby is a vigorous full-term newborn, experts recommend against deep suctioning of the windpipe for fear of causing a certain type of pneumonia. Tapping on the chest to loosen secretions.Use of a warmer to maintain body temperature.Breathing machine to keep the lungs inflated.The infant may be placed in the special care nursery or newborn intensive care unit. Further treatment is necessary if there is thick meconium staining and fetal distress. The newborn's mouth should be suctioned as soon as the head can be seen during delivery. A chest X-ray may show patchy or streaky areas on the lungs.A blood gas analysis shows low blood acidity, decreased oxygen and increased carbon dioxide.Abnormal breath sounds, especially coarse, crackly sounds, are heard through a stethoscope.The most accurate test to check for possible meconium aspiration involves looking for meconium staining on the vocal cords with a laryngoscope. At birth, meconium can be seen in the amniotic fluid.Before birth, the fetal monitor may show a slow heart rate.Dark, greenish staining or streaking of the amniotic fluid or the obvious presence of meconium in the amniotic fluid.It typically occurs when the fetus is stressed during labor, especially when the infant is past its due date. Meconium aspiration syndrome, a leading cause of severe illness and death in the newborn, occurs in about 5 percent to 10 percent of births. Meconium aspiration syndrome occurs when a newborn breathes a mixture of meconium and amniotic fluid into the lungs around the time of delivery. Meconium aspiration.Meconium is the first feces, or stool, of the newborn. A population-based study of meconium aspiration syndrome in neonates born between 37 and 43 weeks of gestation. Respiratory support in meconium aspiration syndrome: A practical guide. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. A study in the International Journal of Pediatrics estimated that about 0.18% of full-term newborns could experience this condition. MAS is a rare complication during childbirth. MAS also increases the likelihood of serious infections, such as pneumonia, which can be particularly severe in a newborn, as their immune system is not yet mature. The condition usually affects full-term newborns born at 37–41 weeks of pregnancy who are small for their gestational age or post-term newborns born after 42 weeks of pregnancy. The resulting signs include difficulty breathing and a bluish tint to the skin. The condition can become severe and cause part of the lung to collapse. When your baby is in a breech position he will be passing meconium but this is completely normal. It’s extremely rare to find green amniotic fluid if a woman is not in established labor. If a baby breathes in amniotic fluid and meconium, these substances can reach their lungs, blocking the airways. When the color of the amniotic fluid is green, that means the baby has opened his bowels several times, which indicates a more sustained lack of oxygen. Amniotic fluid surrounds the fetus in the uterus. Meconium passes out of the newborn’s body as their first stool. Meconium is a dark green sticky substance comprising materials that the fetus ingested while in the uterus. MAS occurs when a newborn breathes in a mixture of amniotic fluid and meconium. Share on Pinterest Image credit: Jill Lehmann Photography/Getty Images
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