MECONIUM ASPIRATION SYNDROME, A COMMON PATHOLOGY BETWEEN NEWBORN INFANTS PIGLETS

摘要

Meconium Aspiration Syndrome (MAS) is defined as a respiratory dysfunction on an infant born with amniotic liquid stained with meconium. In spite of the knowledge of its physiopathology and new introduction of therapies, MAS is still a main cause of neonatal respiratory dysfunction (2). Meconium is made up of a complex material, it is normally present in the fetal intestine; it is mainly composed by squamous epithelial cells, keratin, lanugo, and other exfoliative cells, mixed with amniotic fluid andswallowed by the fetus (3). Once in the digestive system, the amniotic liquid and the suspended material are mixed with gastro-intestinal secretions, including bile, which explains the bright yellowish color of the meconium, appreciated macro and microscopically.