RT Book, Section A1 Wedig, Kathy E. A2 Zaoutis, Lisa B. A2 Chiang, Vincent W. SR Print(0) ID 1146121314 T1 Neonatal Abstinence Syndrome T2 Comprehensive Pediatric Hospital Medicine, 2e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071829281 LK accesspediatrics.mhmedical.com/content.aspx?aid=1146121314 RD 2024/04/24 AB Approximately 4.4% of women of childbearing years use illicit drugs or abuse prescription medications, including marijuana, cocaine, hallucinogens, heroin, sedatives, painkillers, and stimulants.1 Infants born to mothers who habitually use opioids (heroin, methadone, morphine, buprenorphine, meperidine, or codeine) can have physical manifestations of opiate withdrawal, termed neonatal abstinence syndrome (NAS). In recent years, the number of infants diagnosed with NAS nationally has increased significantly,2 likely in part due to more liberal use of prescription opiates during pregnancy.3 Although NAS refers specifically to opiate withdrawal, similar symptoms can occur in infants with intrauterine exposure to other drugs.