Quick Concepts are short videos that describe a key physiological or theoretical concept or demonstrate a brief procedure. This video discusses the pathophysiology, clinical assessment, and management of Meconium Aspiration Syndrome (MAS), which is an important cause of respiratory distress in newborns. If you are interested in learning more about this topic, please watch the full video ""Respiratory Distress in the Newborn"". AUTHORS Megan Connelly, MD Department of Pediatric Newborn Medicine Brigham and Women's Hospital DATES Initial publication: July 28, 2023