Hospital Care of Opioid-Exposed Newborns: Clinical and Psychosocial Challenges

Although the opioid crisis and resulting rise in NAS have affected communities across the US, substantial statewide variation exists, with extremes ranging from 0.7 per 1,000 births affected by NAS in Hawaii to 33.4 per 1,000 births in West Virginia.¹² Within states, increased maternal OUD and NAS rates have also disproportionately affected rural communities possibly due to reduced access to healthcare and mental health services and poor economic conditions.¹³ A recent national study demonstrated that the proportion of newborns with NAS who were born in rural hospitals increased from 12.9% to 21.2% over the past decade; these rural newborns with NAS are more likely to be publicly insured and to require transfer after birth than newborns in urban hospitals.¹⁴ These data suggest a particular need among rural communities for increased resources targeting NAS care as well as maternal OUD prevention and treatment.

The American College of Obstetricians and Gynecologists (ACOG) recommends early universal screening for maternal substance use at the first prenatal visit with a validated screening tool; examples include the 4Ps (parents, partners, past, and pregnancy), CRAFFT (car, relax, alone, forget, friends, trouble), and the National Institute on Drug Abuse quick screen, which have all been well studied and have a high sensitivity for detecting substance use and misuse.¹⁵

Toxicology Screening

Toxicology testing for both mother and newborn is helpful in identifying or confirming intrauterine exposures, particularly in cases of polysubstance use or when a newborn manifests signs of NAS but whose mother denies opioid use. All toxicology testing should be performed with the mother’s consent, and any potential legal or mandatory ramifications of a positive test should be considered. Although universal maternal toxicology testing improves the identification of newborns at risk for NAS, this approach remains controversial; most hospitals use a risk-based approach for maternal toxicology testing.^16,17

Newborn toxicology testing can be performed from samples of hair, urine, meconium, and umbilical cord. Although frequently used, newborn urine testing has the shortest window of detection, ie, the last few days prior to delivery (Table 1). Meconium drug testing has been considered the gold standard and can detect exposures from the last 20 weeks of gestation, providing information on chronic exposures.¹⁸ In a recent survey, 10% of hospitals reported using umbilical cord toxicology as the primary method for detecting intrauterine exposures.¹⁷ This approach allows greater ease of specimen collection but may not yield results that are exactly equivalent to meconium testing.¹⁹

Close monitoring for development of NAS after birth is indicated for all newborns with confirmed or suspected intrauterine opioid exposure. Although the current American Academy of Pediatrics (AAP) guidelines recommend three days of newborn observation for exposure to short-acting opioids and five to seven days for longer acting opioids, substantial variation has been described across US hospitals in policies related to newborn length of stay for NAS observation.^{17, 20} In most hospitals, monitoring for NAS occurs in the routine postpartum unit (ie, level 1 nursery), with transfer to the NICU if pharmacologic treatment is indicated.¹⁷