RT Book, Section A1 Smith, Danielle A2 Bunik, Maya A2 Hay, William W. A2 Levin, Myron J. A2 Abzug, Mark J. SR Print(0) ID 1190357559 T1 The Newborn Infant T2 Current Diagnosis & Treatment: Pediatrics, 26e YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781264269983 LK accessmedicine.mhmedical.com/content.aspx?aid=1190357559 RD 2024/10/14 AB The newborn period is defined as the first 28 days of life. In practice, however, sick or very immature infants may require neonatal care for many months. There are four levels of newborn care. Level 1 refers to basic care of well newborns, neonatal resuscitation, and stabilization prior to transport. Level 2 refers to specialty neonatal care of premature infants greater than 1500 g or more than 32 weeks’ gestation. Level 3 is subspecialty care of higher complexity neonates without limitations based on newborn size and gestational age. Level 4 includes availability of specialized pediatric surgery, cardiac surgery, and extracorporeal membrane oxygenation (ECMO). Level 4 care is often part of a perinatal center offering critical care and transport to the high-risk mother and fetus as well as the newborn infant.