This is the product of meconium (intestinal material which turns into newborn stool) being aspirated into the larger lung passages. Meconium is usually not a problem because it is excreted after delivery. However, these patients are depressed or asphyxiated in utero which will cause premature discharge. This sequence causes air trapping which causes volutrauma. Also, lung tissue is severely irritated from MAS and causes a pneumonitis. These patients also usually present with pulmonary hypertension from right to left
This is the product of meconium (intestinal material which turns into newborn stool) being aspirated into the larger lung passages. Meconium is usually not a problem because it is excreted after delivery. However, these patients are depressed or asphyxiated in utero which will cause premature discharge. This sequence causes air trapping which causes volutrauma. Also, lung tissue is severely irritated from MAS and causes a pneumonitis. These patients also usually present with pulmonary hypertension from right to left