Increasing Incidence of the Neonatal Abstinence Syndrome in US Neonatal ICUs

(N Engl J Med. 2015; 372: 2118–2126) The neonatal abstinence syndrome (NAS) is a drug-withdrawal syndrome occurring in newborns after in utero exposure to opioids. The incidence of this syndrome has almost tripled in the United States from 2000 to 2009, and several states have reported increases larger than the national...