Neonatal Abstinence Syndrome

Assessing the relationship between neonatal abstinence syndrome and birth defects in Delaware

BACKGROUND

Neonatal abstinence syndrome (NAS) is a withdrawal syndrome in newborns and is frequently caused by maternal opioid use during pregnancy. Our study examines whether NAS is associated with birth defects in Delaware.

METHODS

We conducted a retrospective analysis of linked Delaware birth certificate data (BCD), hospital discharge data (HDD), and birth defects registry (BDR) data to examine the association between NAS and birth defects for all hospital births to Delaware residents from 2010 to 2017. Birth defects data were abstracted from medical records from Delaware's BDR. We used International Classification of Diseases Ninth and Tenth Revision Clinical Modification (ICD-9-CM/ICD-10-CM) 779.5 and P96.1 codes to determine NAS using HDD and excluded iatrogenic cases of NAS. We estimated crude and adjusted odds ratio with 95% confidence intervals (CIs).

RESULTS

During 2010-2017, there were 2,784 cases of birth defects and 1,651 cases of NAS in Delaware. Among infants with a diagnosis of NAS, 56 also had a birth defect (3.4%), similar to 2,728 birth defects among 79,636 infants without a diagnosis of NAS (3.4%). We found no statistically significant association between an NAS diagnosis and birth defects (adjusted odds ratios = 1.0; 95% CI: 0.8-1.3).

CONCLUSIONS

Our multiyear state-wide study using linked BCD, HDD, and BDR data for Delaware did not show a statistically significant association between infants diagnosed with NAS and birth defects, overall.

Neonatal Abstinence Syndrome and Maternal Opioid-Related Diagnoses in the US, 2010-2017

IMPORTANCE

Substantial increases in both neonatal abstinence syndrome (NAS) and maternal opioid use disorder have been observed through 2014.

OBJECTIVE

To examine national and state variation in NAS and maternal opioid-related diagnoses (MOD) rates in 2017 and to describe national and state changes since 2010 in the US, which included expanded MOD codes (opioid use disorder plus long-term and unspecified use) implemented in International Classification of Disease, 10th Revision, Clinical Modification.

DESIGN, SETTING, AND PARTICIPANTS

Repeated cross-sectional analysis of the 2010 to 2017 Healthcare Cost and Utilization Project's National Inpatient Sample and State Inpatient Databases, an all-payer compendium of hospital discharge records from community nonrehabilitation hospitals in 47 states and the District of Columbia.

EXPOSURES

State and year.

MAIN OUTCOMES AND MEASURES

NAS rate per 1000 birth hospitalizations and MOD rate per 1000 delivery hospitalizations.

RESULTS

In 2017, there were 751 037 birth hospitalizations and 748 239 delivery hospitalizations in the national sample; 5375 newborns had NAS and 6065 women had MOD documented in the discharge record. Mean gestational age was 38.4 weeks and mean maternal age was 28.8 years. From 2010 to 2017, the estimated NAS rate significantly increased by 3.3 per 1000 birth hospitalizations (95% CI, 2.5-4.1), from 4.0 (95% CI, 3.3-4.7) to 7.3 (95% CI, 6.8-7.7). The estimated MOD rate significantly increased by 4.6 per 1000 delivery hospitalizations (95% CI, 3.9-5.4), from 3.5 (95% CI, 3.0-4.1) to 8.2 (95% CI, 7.7-8.7). Larger increases for MOD vs NAS rates occurred with new International Classification of Disease, 10th Revision, Clinical Modification codes in 2016. From a census of 47 state databases in 2017, NAS rates ranged from 1.3 per 1000 birth hospitalizations in Nebraska to 53.5 per 1000 birth hospitalizations in West Virginia, with Maine (31.4), Vermont (29.4), Delaware (24.2), and Kentucky (23.9) also exceeding 20 per 1000 birth hospitalizations, while MOD rates ranged from 1.7 per 1000 delivery hospitalizations in Nebraska to 47.3 per 1000 delivery hospitalizations in Vermont, with West Virginia (40.1), Maine (37.8), Delaware (24.3), and Kentucky (23.4) also exceeding 20 per 1000 delivery hospitalizations. From 2010 to 2017, NAS and MOD rates increased significantly for all states except Nebraska and Vermont, which only had MOD increases.

CONCLUSIONS AND RELEVANCE

In the US from 2010 to 2017, estimated rates of NAS and MOD significantly increased nationally and for the majority of states, with notable state-level variation.

Definitions of neonatal abstinence syndrome in clinical studies of mothers and infants: an expert literature review

Neonatal abstinence syndrome (NAS) results from discontinuation of in utero exposures to opioids/substances. The rising incidence of NAS has prompted an increased need for accurate research and public health data. To examine how NAS has been defined in clinical studies of opioid-exposed mothers and infants, a review process was developed based on the RAND/UCLA Appropriateness Method, yielding 888 abstracts. Per inclusion criteria, 57 abstracts underwent full-text review. To define NAS, studies cited using modified versions of the Finnegan NAS scoring tool (n = 21; 37%), ICD-9/10 coding (n = 17; 30%), original Finnegan tool (n = 16; 28%), Eat Sleep Console (n = 3; 5%), and Lipsitz (n = 3; 5%) tools, (3 cited 2+ tools). Most studies utilized subjective NAS scoring/assessment algorithms and neonatal coding as key elements defining NAS. While most cited opioid exposure as integral to their inclusion criteria, 26% did not. These approaches highlight the need for a more refined and standardized definition of NAS.

Use of Phenobarbital to Treat Neonatal Abstinence Syndrome From Exposure to Single vs. Multiple Substances

Drug use in pregnancy is a major public health issue. Intrauterine exposure to opioids alone or in addition to other substances may lead to neonatal abstinence syndrome (NAS). Little consensus exists on optimal therapy, especially for those exposed to multiple drugs. We aim to determine whether the use of opioids alone vs. in combination with phenobarbital will affect short-term neonatal outcomes. This retrospective review of infants admitted to the neonatal intensive care unit (NICU) included newborns ≥35 weeks of gestation exposed to opioids, or multiple substances including opioids, in utero. Treatment with opioids alone, and addition of phenobarbital as initial therapy vs. rescue, was evaluated. Out of 182 newborns, 54 (30%) were exposed to methadone alone vs. 128 (70%) to multiple drugs. Length of stay (LOS) in the hospital was not significantly affected (p = 0.684) by single vs. multiple drug exposure in utero. Treatment of NAS with opioid alone resulted in significantly shorter LOS (27 days), as compared to those treated with opioid and phenobarbital (45 days, p < 0.001). LOS was further prolonged in those treated with phenobarbital as a "rescue" medication in addition to an opioid (49 days, p < 0.0001). There was a significant increase in LOS and duration of opioid treatment for all infants treated with phenobarbital, both in those exposed to opioids alone, and to multiple substances in utero.

A Retrospective Review Following the Addition of Clonidine to a Neonatal Abstinence Syndrome Treatment Algorithm

Objective: To investigate the outcomes associated with the implementation of a neonatal abstinence syndrome (NAS) treatment algorithm utilizing dual therapy with morphine sulfate and clonidine in a level four neonatal intensive care unit (NICU). Study Design: A cohort of neonates (≥35 weeks gestation) born at an academic tertiary medical center between January 1, 2015 and December 31, 2018 who were diagnosed with NAS were retrospectively evaluated following the implementation of a new NAS treatment algorithm. Neonates were categorized in two groups based on if they were treated pre- or post-implementation of the protocol. The primary efficacy outcome was length of hospital stay. Secondary outcomes included the incidence of adverse drug reactions, length of treatment for NAS, and maximum as well as total cumulative dose of each medication used to treat NAS. Results: The implementation of this NAS treatment algorithm significantly reduced the length of hospital stay (30 days vs. 20 days, p = 0.001). In addition, there was a significant decrease in duration of morphine sulfate exposure as well as cumulative dose of morphine required to successfully treat a neonate with NAS in the post-implementation group (26 days vs. 15 days, p = 0.002 and 6.9 mg/kg vs. 3.4 mg/kg, p = 0.031). Conclusion: Addition of clonidine to morphine sulfate as initial therapy for NAS significantly reduced the cumulative exposure as well as duration of exposure to morphine sulfate compared to morphine monotherapy and decrease length of hospital stay.

Developmental Outcomes of Children Born with Neonatal Abstinence Syndrome (NAS): A Scoping Review

AIMS

The purpose of this scoping review is to provide an overview of developmental outcomes of children diagnosed with neonatal abstinence syndrome (NAS).

METHODS

The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework was used to guide this scoping review. A comprehensive search of CINAHL, MEDLINE, EMBASE, Web of Science, and PsycINFO was conducted using search terms related to NAS and developmental areas. Full-text screening was completed for 30 articles, and eight studies were included in this review.

RESULTS

Cognitive and language development, as well as school performance, social and motor domains, may be areas of concern in children with NAS.

CONCLUSIONS

The developmental outcomes of infants with NAS cannot be firmly determined due to inconsistent results across reviewed studies. Future research investigating development across various ages is required for rending more appropriate intervention services to this high-risk population.

Incidence of Neonatal Abstinence Syndrome Epidemic and Associated Predictors in Nevada: A Statewide Audit, 2016-2018

Neonatal abstinence syndrome (NAS) is a postnatal withdrawal syndrome among neonates born to mothers with drug dependence disorders. NAS poses a significant public health challenge nationally, with a six-fold increase in incidence (1.2 to 6.7 per 1000 hospital births/year) from 2000–2016. Besides national data, it is critical to quantify NAS at the state-level to identify target areas for prevention. The objectives of this study were to ascertain statewide burden, including county and regional distribution of NAS in Nevada during 2016–2018, and to investigate potential factors associated with NAS. This study utilized hospital administrative data, and a total of 100,845 inpatient pediatric discharges were examined to identify NAS cases. Statistical analyses included estimation of crude incidence rates per 1000 hospital births and multilevel logistic regression modeling. NAS incidence in Nevada decreased slightly from 8.6 to 7.7 per 1000 hospital births between 2016 and 2018, but the overall incidence of 8 was substantially higher than earlier estimates (4.8/1000 hospital births) reported for 2013. Incidence was disproportionately higher among white newborns (12, 95% CI 11.0,13.0) and Medicaid enrollees (13.2, 95% CI 11.0,15.0). Southern Nevada had the highest incidence rate of 8.2 per 1000 hospital births. Nearly 75% of NAS cases were residents of Clark County. Incidence rates of NAS parallel the growing opioid prescription rates in Nevada and highlight the need for adopting opioid control prescribing practices to combat this drug epidemic. These findings might help in designing and evaluating state- and system-level interventions introduced to combat the opioid epidemic.

Model-Based Approach to Improve Clinical Outcomes in Neonates With Opioid Withdrawal Syndrome Using Real-World Data

At least 60% of the neonates with opioid withdrawal syndrome (NOWS) require morphine to control withdrawal symptoms. Currently, the morphine dosing strategies are empiric, not optimal and associated with longer hospital stay. The aim of the study was to develop a quantitative, model-based, real-world data-driven approach to morphine dosing to improve clinical outcomes, such as reducing time on treatment. Longitudinal morphine dose, clinical response (Modified Finnegan Score (MFS)), and baseline risk factors were collected using a retrospective cohort design from the electronic medical records of neonates with NOWS (N = 177) admitted to the University of Maryland Medical Center. A dynamic linear mixed effects model was developed to describe the relationship between MFS and morphine dose adjusting for baseline risk factors using a split-sample data approach (70% training: 30% test). The training model was evaluated in the test dataset using a simulation based approach. Maternal methadone and benzodiazepine use, and race were significant predictors of the MFS response. Positive autocorrelations of 0.56 and 0.12 were estimated between consecutive MFS responses. On an average, for a 1,000 μg increase in the morphine dose, the MFS decreased by 0.3 units. The model evaluation showed that observed and predicted median time on treatment were similar (13.0 vs. 13.8 days). A model-based framework was developed to describe the MFS-morphine dose relationship using real-world data that could potentially be used to develop an adaptive, individualized morphine dosing strategy to improve clinical outcomes in infants with NOWS.

Behavioral and Enhanced Perinatal Intervention (B-EPIC): A randomized trial targeting tobacco use among opioid dependent pregnant women

BACKGROUND

Opioid use during pregnancy is a significant public health issue. The standard of care for treating opioid use disorder during pregnancy includes medications for opioid disorder (MOUD). However, tobacco use often goes unaddressed among pregnant women on MOUD. In 2018, our team received a National Institute on Drug Abuse (NIDA) funded R34 to conduct a three year-randomized trial to test the feasibility of a novel tobacco intervention for pregnant women receiving MOUD.

AIMS

The aims of this study are: (1) to determine the impact of the B-EPIC intervention on maternal tobacco use and stage of change; (2) to determine the impact of B-EPIC on tobacco-related maternal and infant health outcomes including gestational age at birth, birthweight, NAS diagnosis and severity, and number of ear and respiratory infections during the first six months; (3) to compare healthcare utilization and costs incurred by pregnant patients that receive the B-EPIC intervention versus TAU.

METHODS

We plan to enroll 100 pregnant women on MOUD for this randomized controlled trial (B-EPIC intervention n = 50 and treatment as usual n = 50). A major strength of this study is its wide range of health and economic outcomes assessed on mother, neonate and the infant.

CONCLUSIONS

Despite the very high rates of smoking among pregnant women with OUD, there are few tobacco treatment interventions that have been tailored for this high - risk population. The overall goal of this study is to move towards a tobacco treatment standard for pregnant women receiving treatment for OUD.

Racial and Ethnic Disparities in Maternal and Infant Outcomes Among Opioid-Exposed Mother-Infant Dyads in Massachusetts (2017-2019)

Objectives. To examine the extent to which differences in medication for opioid use disorder (MOUD) in pregnancy and infant neonatal opioid withdrawal syndrome (NOWS) outcomes are associated with maternal race/ethnicity.Methods. We performed a secondary analysis of a statewide quality improvement database of opioid-exposed deliveries from January 2017 to April 2019 from 24 hospitals in Massachusetts. We used multivariable mixed-effects logistic regression to model the association between maternal race/ethnicity (non-Hispanic White, non-Hispanic Black, or Hispanic) and prenatal receipt of MOUD, NOWS severity, early intervention referral, and biological parental custody at discharge.Results. Among 1710 deliveries to women with opioid use disorder, 89.3% (n = 1527) were non-Hispanic White. In adjusted models, non-Hispanic Black women (AOR = 0.34; 95% confidence interval [CI] = 0.18, 0.66) and Hispanic women (AOR = 0.43; 95% CI = 0.27, 0.68) were less likely to receive MOUD during pregnancy compared with non-Hispanic White women. We found no statistically significant associations between maternal race/ethnicity and infant outcomes.Conclusions. We identified significant racial/ethnic differences in MOUD prenatal receipt that persisted in adjusted models. Research should focus on the perspectives and treatment experiences of non-Hispanic Black and Hispanic women to ensure equitable care for all mother-infant dyads.

Expanding Contraception Access for Women With Opioid-Use Disorder: A Qualitative Study of Opportunities and Challenges

PURPOSE

As almost nine in ten pregnancies among women with opioid use disorder (OUD) are unintended, expanding access to contraception is an underutilized but potentially effective strategy in increasing reproductive agency and reducing the overall burden of neonatal abstinence syndrome. We aimed to identify where and how contraceptive services could be integrated into existing points-of-contact for women with OUD.

APPROACH

In-depth qualitative interviews.

SETTING

Three diverse catchment areas in Missouri.

PARTICIPANTS

Women with OUD (n = 15) and professional stakeholders (n = 16) representing five types of existing OUD service points: syringe exchange programs, recovery support programs, substance use treatment programs, emergency departments, and Federally Qualified Health Centers.

METHOD

Interviews were audio-recorded, transcribed, and thematically coded using Dedoose software.

RESULTS

Six themes emerged as essential components for integrating contraceptive services into existing points-of-contact for women with OUD: (1) reach women with unmet need; (2) provide free or affordable contraception; (3) maximize service accessibility; (4) provide patient-centered care; (5) employ willing, qualified contraceptive providers; and (6) utilize peer educators. Participants affirmed the overall potential benefit of contraceptive service integration and illuminated various opportunities and challenges relevant to each type of existing service point.

CONCLUSION

As health promotion initiatives look to increase access to contraception among women with OUD, these six' participant-identified components offer essential guidance in selecting advantageous points-of-contact and addressing remaining gaps in services.

Childhood Health and Educational Outcomes After Neonatal Abstinence Syndrome: A Systematic Review and Meta-analysis

OBJECTIVE

To systematically review and meta-analyze the association between neonatal abstinence syndrome (NAS) and adverse health or educational childhood outcomes.

STUDY DESIGN

An all-language search was conducted across 11 databases between January 1, 1975, and September 3, 2019; 5865 titles were identified. Observational studies of children between 28 days and 16 years of age, in whom a diagnosis of NAS was documented, were included. Outcomes included reasons for hospital admissions, childhood diagnoses, developmental outcomes, and academic attainment scores. All studies underwent independent review by 2 trained reviewers, who extracted study data and assessed risk of bias using the Newcastle Ottawa Tool.

RESULTS

Fifteen studies were identified that included 10 907 children with previous NAS and 1 730 213 children without previous NAS, aged 0-16 years. There was a strong association between NAS and subsequent child maltreatment (aOR, 6.49; 95% CI, 4.46-9.45; I² = 52%), injuries and poisoning (aOR, 1.34; 95% CI, 1.21-1.49; I² = 0%), and a variety of mental health conditions. Studies consistently demonstrated an increased incidence of strabismus and nystagmus among those with previous NAS. Children with NAS also had lower mean academic scores than the control group in every domain of testing across age groups.

CONCLUSIONS

NAS is significantly associated with future child maltreatment, mental health diagnoses, visual problems, and poor school performance. Owing to the necessary inclusion of nonrandomized studies, incomplete reporting among studies, and likely unadjusted confounding, this review does not suggest causation. However, we highlight associations requiring further investigation and targeted intervention, to positively impact the life course trajectories of this growing population of children.

[Clinical features and risk factors associated with prenatal exposure to drugs of abuse]

INTRODUCTION

Early identification of neonates exposed to drugs of abuse during pregnancy allows a more precise clinical management.

OBJECTIVES

To describe the clinical characteristics and to identify risk factors associated with the early detection of neonates exposed to drugs of abuse in a Neonatal Intermediate and Intensive Care Unit.

METHODS

Prospective observational study of neonates with and without clinical suspicion of prenatal exposure to drugs of abuse. Meconium was analyzed using standard chromatographic techniques. Univariate and multivariate statistical analyzes were performed.

RESULTS

372 neonates were included. Exposure to drugs of abuse was detected in 49 (13.2%) cases: in 41 (83.7%) one drug and in 8 (16.3%) more than one. Somatometry at birth revealed: a) lower length percentile in those exposed to some drug, more than one and cannabis; b) lower weight percentile in those exposed to cannabis and of these compared to those exposed to alcohol. In neonates older than 34 pregnancy weeks (PW): a) lower length percentile in those exposed to any substance; b) lower percentile of length and weight in exposed to more than one. The most clinically relevant independent risk factors useful to detect cases of prenatal exposure to drugs of abuse were (Odds ratio (95% CI)): reason for admission other than prematurity (5.52 (2.55-1.93)), length percentile less than 33 (1.95 (1.05-3.60) and 2.14 (1.04-3.40) in older than 34 PW) and social dystocia/uncontrolled pregnancy in older than 34 PW (4.47 (1.03-19.29)).

CONCLUSIONS

There are somatometric alterations and risk factors that can help in the early detection of neonates exposed to drugs of abuse. The somatometric alterations identified can be useful to extend the differential diagnosis of these alterations and to study their causes.

Opioid Addiction/Pregnancy and Neonatal Abstinence Syndrome (NAS): A Preliminary Open-Label Study of Buprenorphine Maintenance and Drug Use Targeted Psychotherapy (DUST) on Cessation of Addictive Drug Use

BACKGROUND

Neonatal abstinence syndrome (NAS) is common, expensive, and hurts opioid addicted women and their families. Current treatments do not sufficiently address comorbid addictions, especially tobacco use, among pregnant buprenorphine-maintained women.

METHODS

25 consecutive admissions of pregnant, opioid addicted women were treated with buprenorphine maintenance and a novel intervention for pregnant opioid addicted patients, Drug Use Targeted Therapy (DUST). DUST entails a combination of informing women about the impact of various drugs on their fetus, discussing the woman's thinking about these consequences of drug use, and varying the frequency of psychotherapy; increasing if addictive drugs are used and decreasing if the woman wishes when drug use is stopped.

RESULTS

20/25 remained in treatment until delivery. All 20 women were using addictive drugs at admission. None were planned pregnancies. There was a high prevalence of emotional, physical or sexual abuse, criminal behavior, comorbid psychiatric disorders, and chronic pain. Nineteen stopped all addictive drugs. NAS was present for 5 out of 19 newborns with a duration of hospitalization from 4 to 6 days.

CONCLUSIONS

This preliminary open-label case series found that pregnant buprenorphine maintained women can stop tobacco. What has sometimes been termed "neonatal opioid abstinence syndrome" may most accurately be termed, "neonatal opioid/tobacco abstinence syndrome." If the treatment effectively addresses tobacco use, other addictive drugs are rarely used. DUST resulted in a 95% quit rate for addictive drugs. Pilot data on this new intervention is limited; a case series that does not have a corresponding control group.

Physiologic Indirect Response Modeling to Describe Buprenorphine Pharmacodynamics in Newborns Treated for Neonatal Opioid Withdrawal Syndrome

BACKGROUND AND OBJECTIVE

Buprenorphine has been shown to be effective in treating infants with neonatal opioid withdrawal syndrome. However, an evidence-based buprenorphine dosing strategy has not been established in the treatment of neonatal opioid withdrawal syndrome because of a lack of exposure-response data. The aim of this study was to develop an integrated pharmacokinetic and pharmacodynamic model to predict buprenorphine treatment outcomes in newborns with neonatal opioid withdrawal syndrome.

METHODS

Clinical data were obtained from 19 newborns with a median (range) gestational age of 37 (34-41) weeks enrolled in a pilot pharmacokinetic study of buprenorphine. Sparse blood sampling, comprising three specimens obtained around the second dose of buprenorphine, was performed using heel sticks with dried blood spot technology. Standardized neonatal opioid withdrawal syndrome severity scores (Finnegan scores) were collected every 3-4 h based on symptoms by bedside nursing staff. Mean Finnegan scores were used as a pharmacodynamic marker in the exposure-response modeling. The blood concentration-Finnegan score relationship was described using a physiologic indirect response model with inclusion of natural disease remission.

RESULTS

A total of 52 buprenorphine blood concentrations and 780 mean Finnegan scores were available for the pharmacokinetic/pharmacodynamic modeling and exposure-response analysis. A one-compartment model with first-order absorption adequately described the pharmacokinetic data. The buprenorphine blood concentration at 50% of maximum effect for the inhibition of disease progression was 0.77 ng/mL (95% confidence interval 0.32-1.2). The inclusion of natural disease remission described as a function of postnatal age significantly improved the model fit.

CONCLUSIONS

A buprenorphine pharmacokinetic/pharmacodynamic model was successfully developed. The model could facilitate model-informed optimization of the buprenorphine dosing regimen in the treatment of neonatal opioid withdrawal syndrome.

Hospital care for opioid use disorder in pregnancy: Challenges and opportunities identified from a Minnesota survey

Objectives:

The prevalence of opioid use disorder continues to rise in the United States, with a simultaneous increase in the diagnosis of both opioid use disorder during pregnancy and neonatal opioid withdrawal syndrome. Despite these increases in pregnancy-related care, little is known about hospital policy and policy implementation related to opioid use disorder in pregnancy. In addition, it is unknown whether policies might differ in rural or urban hospitals. To better examine these issues, Minnesota hospitals were surveyed regarding the existence and implementation of policies related to opioid use disorder in pregnancy and whether any policy implementation challenges had been identified.

Methods:

From August to December 2017, the research team contacted all Minnesota hospitals that offered obstetric services (n = 82) to survey challenges to implementing policies for opioid use disorder during pregnancy, among other questions. Fifty-nine hospitals had respondents (primarily obstetric department supervisors) who provided information about policy implementation challenges for a 72% response rate. Qualitative responses were analyzed using qualitative description and according to hospital location: metropolitan (urban), micropolitan (rural), or non-core (rural).

Results:

Ninety-one percent of respondents said that they had pregnancies affected by opioid use disorder at their hospital within the last year. Four major challenges to policy implementation were identified in qualitative responses: (1) provider consensus, (2) patient response to policy, (3) lack of resources, and (4) low frequency of occurrence. All four challenges were more frequently identified by respondents at rural hospitals compared to urban hospitals.

Conclusion:

This study identified challenges in standardizing hospital care for pregnancies affected by opioid use disorder, and these challenges were identified more frequently in rural locations. These non-urban hospitals may require increased state and federal support and funding.

Effects of Partially Hydrolyzed Formula on Severity and Outcomes of Neonatal Abstinence Syndrome

OBJECTIVE

This study compares the effect of partially hydrolyzed formula (PHF) and standard formula (SF) on the severity and short-term outcomes of neonatal abstinence syndrome (NAS).

STUDY DESIGN

We performed a retrospective chart review of 124 opioid-dependent mothers and their term or near-term infants. Infants were categorized according to the predominant type of formula consumed during the hospital stay. Finnegan's scale was used to assess symptoms of withdrawal.

RESULTS

A total of 110 infants met our inclusion criteria. Thirty-four (31%) infants were fed predominantly PHF, 60 (54%) infants were fed SF, and 16 (15%) infants were fed maternal breast milk. There was no difference between the infants in the PHF and SF groups with respect to requirement of morphine (MSO₄) therapy, maximum dose of MSO₄ used, duration of MSO₄ treatment or length of hospital stay after performing multivariate analyses to control for type of drug used by the mother, maternal smoking, regular prenatal care, inborn status, and maximum Finnegan score prior to MSO₄ treatment.

CONCLUSION

Use of PHF failed to impact short-term outcomes in infants treated for NAS including maximum MSO₄ dose, duration of MSO₄ treatment, and length of hospital stay. A prospective randomized controlled trial may be indicated to confirm this finding.

Cleft Lip and Palate in Newborns Diagnosed With Neonatal Abstinence Syndrome

OBJECTIVE

Cleft lip and/or cleft palate (CLP) is the most common major congenital malformation of the head and neck. Previous studies suggested an association between fetal opioid exposure and CLP. This study seeks to evaluate the associations between CLP and neonatal abstinence syndrome (NAS) in the United States.

STUDY DESIGN

Population-based inpatient registry analysis.

SETTING

Academic medical center.

SUBJECTS AND METHODS

Kids' Inpatient Database (2016) was used to identify weighted in-hospital births with diagnoses of CLP or NAS. Demographic information was obtained.

RESULTS

Among 3.8 million weighted in-hospital births, prevalence rates of CLP in the NAS and non-NAS populations were 3.13 and 1.35 per 1000, respectively. The odds ratios for patients with NAS developing CLP, isolated cleft palate, isolated cleft lip, and cleft lip and palate when compared with the reference population were 2.33 (95% CI, 1.87-2.91; P < .001), 4.97 (95% CI, 3.84-6.43; P < .001), 1.01 (P = .98), and 0.80 (P = .46). Independent predictors of CLP within the NAS population included median household income for patients' zip code, race, hospital region, payment method, and maternal use of tobacco or other drugs of addiction. The binary logistic regression model accounting for possible confounding variables produced an odds ratio of 1.74 (95% CI, 1.36-2.23; P < .001) for the association between NAS and CLP.

CONCLUSION

Our study found an association between NAS and CLP, specifically isolated cleft palate, suggesting that prenatal exposure to opioids may be an environmental risk factor in the development of CLP.

Clonidine versus phenobarbital as adjunctive therapy for neonatal abstinence syndrome

OBJECTIVE

To compare clonidine versus phenobarbital as adjunctive therapy in infants who failed monotherapy with morphine for neonatal abstinence syndrome (NAS).

STUDY DESIGN

Prospective, randomized, open-label study of infants ≥ 35 weeks' gestation. Infants received clonidine or phenobarbital per protocol. Primary outcome was morphine treatment days. Secondary outcomes were inpatient adjunctive days, length of stay (LOS), triple therapy, safety, and readmission rates.

RESULTS

A total of 25 infants were treated with clonidine (n = 14) or phenobarbital (n = 11). Mean morphine treatment duration was significantly longer with clonidine (34.4 days, SD = 10.6) compared with phenobarbital (25.5 days, SD = 7.3, p = 0.026). The clonidine group also had higher inpatient adjunctive days (mean: 33.8 days [SD = 14.3] vs. 22 days [SD = 12.6], p = 0.042) and LOS (mean: 41.8 days [SD = 10.9] vs. 31 days [SD = 10]; p = 0.018) compared with phenobarbital.

CONCLUSIONS

Phenobarbital, as adjunctive therapy, led to significantly shorter duration of morphine therapy, inpatient adjunctive days, and length of stay compared with clonidine.

Knowledge of and Perceived Competence in Trauma-Informed Care and Attitudes of NICU Nurses Toward Mothers of Newborns With Neonatal Abstinence Syndrome

OBJECTIVE

To explore how knowledge of and perceived competence in trauma-informed care inform the attitudes of NICU nurses toward mothers of newborns with neonatal abstinence syndrome (NAS).

DESIGN

A cross-sectional survey study.

SETTING

A southern U.S. metropolitan children's hospital with 145 NICU beds.

PARTICIPANTS

Convenience sample of 150 NICU nurses.

METHODS

Participants completed an online survey questionnaire adapted from the Attitudes About Drug Abuse in Pregnancy questionnaire and the Trauma-Informed Pediatric Care survey. Participants also responded to one open-ended question about their experiences in working with mothers of newborns with NAS. We used descriptive and inferential statistics and content analysis to analyze the survey data.

RESULTS

Participants demonstrated low to moderate knowledge about and perceived competence in trauma-informed care and showed more judgmental attitudes toward mothers of newborns with NAS. Level of knowledge about mothers with substance use disorder and perceived competence in trauma-informed care were associated with participants' attitudes toward mothers of newborns with NAS. Emergent themes from qualitative data included the following: Mother-Newborn Dyads Shape Nurses' Judgmental Attitudes, Caring for Mothers of Newborns With NAS Is a Challenging Experience, and Need to Refine Care for Mothers Through Intra- and Interdisciplinary Collaboration.

CONCLUSION

NICU nurses need further education about mothers of newborns with NAS. Improved knowledge about these women and adaptation of the principles of trauma-informed care may influence NICU nurses' judgmental attitudes toward mothers of newborns with NAS.

"Alcohol During Pregnancy? Nobody Does That Anymore": State Legislators' Use of Evidence in Making Policy on Alcohol Use in Pregnancy

OBJECTIVE

In recent years, U.S. states have passed many laws addressing alcohol use in pregnancy, despite limited evidence on the impact of such policies. This study explores how state legislators use evidence when making policy on alcohol use in pregnancy.

METHOD

Study data are drawn from semistructured interviews with 29 state lawmakers and their aides in Maryland, North Carolina, and Virginia, conducted in March through July 2017. Interview transcripts were coded and analyzed by inductive and deductive methods.

RESULTS

Despite evidence on the harms of alcohol use in pregnancy, most lawmakers did not express concern about this topic. Instead, they expressed concern about opioid use in pregnancy. Personal experiences, anecdotes, and known contacts influenced legislators' views on substance use in pregnancy, whereas evidence, for the most part, did not. The intermediaries who typically bring evidence about problems and solutions to legislators did not appear to be raising the issue of alcohol use in pregnancy on legislators' agenda.

CONCLUSIONS

Basic evidence on the prevalence and harms of alcohol use in pregnancy did not appear to influence state lawmakers' policy priorities. Concern over opioid use in general may provide a window of opportunity to educate legislators on the relative scope and harms of alcohol and opioid use in pregnancy. It remains unclear why states are passing alcohol-in-pregnancy policies. More research is needed to explore how state lawmakers form their understanding of substance use in pregnancy and related policies.

Maternal prepregnancy surgery and risk of neonatal abstinence syndrome in future newborns: a longitudinal cohort study

BACKGROUND

Neonatal abstinence syndrome is increasingly prevalent, and may be related to opioid use disorders caused by postoperative prescriptions for pain control. We assessed the association of maternal prepregnancy surgery with risk of neonatal abstinence syndrome from opioid use disorders in future pregnancies.

METHODS

We conducted a longitudinal retrospective cohort study of 2 182 365 deliveries in Quebec, Canada, between 1989 and 2016. The main exposure was maternal prepregnancy surgery. The main outcome measure was neonatal abstinence syndrome in offspring. We adjusted associations for maternal comorbidity and pregnancy characteristics using log-binomial regression models.

RESULTS

The prevalence of neonatal abstinence syndrome in the cohort was 10.7 per 10 000 births. Compared with no surgery, prepregnancy surgery was associated with a risk ratio (RR) of neonatal abstinence syndrome of 1.63 (95% confidence interval [CI] 1.49-1.78). Risk was greater for 3 or more prepregnancy surgeries (RR 2.34, 95% CI 2.07-2.63) and age < 15 years at first surgery (1 surgery: RR 2.08, 95% CI 1.71-2.54; 2 or more surgeries: RR 2.79, 95% CI 2.32-3.37). Nearly all surgical specialties increased the risk of neonatal abstinence syndrome, but associations were strongest for cardiothoracic surgery (RR 4.45, 95% CI 2.87-6.91), neurosurgery (RR 3.00, 95% CI 1.56-5.77) and urologic surgery (RR 3.03, 95% CI 2.16-4.26).

INTERPRETATION

Prepregnancy surgery is associated with the risk of neonatal abstinence syndrome in future pregnancies. Prescription opioids for postsurgical pain may result in opioid use disorders during future pregnancies, inadvertently increasing the risk of neonatal abstinence syndrome in offspring.

Outcome reporting in neonates experiencing withdrawal following opioid exposure in pregnancy: a systematic review

Background

Neonatal withdrawal secondary to in utero opioid exposure is a growing global concern stressing the psychosocial well-being of affected families and scarce hospital resources. In the ongoing search for the most effective treatment, randomized controlled trials are indispensable. Consistent outcome selection and measurement across randomized controlled trials enables synthesis of results, fostering the translation of research into practice. Currently, there is no core outcome set to standardize outcome selection, definition and reporting. This study identifies the outcomes currently reported in the literature for neonates experiencing withdrawal following opioid exposure during pregnancy.

Methods

A comprehensive literature search of MEDLINE, EMBASE and Cochrane Central was conducted to identify all primary research studies (randomized controlled trials, clinical trials, case-controlled studies, uncontrolled trials, observational cohort studies, clinical practice guidelines and case reports) reporting outcomes for interventions used to manage neonatal abstinence syndrome between July 2007 and July 2017. All “primary” and “secondary” neonatal outcomes were extracted by two independent reviewers and were assigned to one of OMERACT’s core areas of “pathophysiological manifestation”, “life impact”, “resource use”, “adverse events”, or “death”.

Results

Forty-seven primary research articles reporting 107 “primary” and 127 “secondary” outcomes were included. The most frequently reported outcomes were “duration of pharmacotherapy” (68% of studies, N = 32), “duration of hospital stay” (66% of studies, N = 31) and “withdrawal symptoms” (51% of studies, N = 24). The discrepancy between the number of times an outcome was reported and the number of articles was secondary to the use of composite outcomes. Frequently reported outcomes had heterogeneous definitions or were not defined by the study and were measured at different times. Outcomes reported in the literature to date were mainly assigned to the core areas “pathophysiologic manifestations” or “resource use”. No articles reported included parent or former patient involvement in outcome selections.

Conclusions

Inconsistent selection and definition of primary and secondary outcomes exists in the present literature of pharmacologic and nonpharmacologic interventions for managing opioid withdrawal in neonates. No studies involved parents in the process of outcome selection. These findings hinder evidence synthesis to generate clinically meaningful practice guidelines. The development of a specific core outcome set is imperative.

Emerging therapies for the treatment of neonatal abstinence syndrome

Objective: To examine the evidence for emerging treatment options, buprenorphine or clonidine, as monotherapy for the treatment of neonatal abstinence syndrome (NAS) against standards of care, morphine or methadone.Data sources: A PubMed literature search from 1946 to 2019 was performed using the terms NAS, neonatal withdrawal, buprenorphine and NAS, clonidine and NAS, morphine and NAS, methadone and NAS, opioids and pregnancy, opioids and NAS, prenatal exposure and opioids.Study selection and data extraction: Study evaluation was limited to English-language studies conducted in humans. Articles were eliminated if subjects did not have a formal diagnosis of NAS. Additionally, studies were eliminated if neonates received diluted tincture of opium. Additional references were identified from a manual citation review.Relevance to patient care and clinical practice: Eight articles were evaluated. Five articles compared buprenorphine to either morphine or methadone. Buprenorphine was found to decrease length of NAS treatment an average of 9.2 days and decrease hospital length of stay (LOS) an average of 8.2 days. Three articles evaluated the use of clonidine for NAS, two as an adjunct to morphine and one as monotherapy. Adjunctive clonidine plus morphine versus phenobarbital plus morphine both significantly reduced the total morphine treatment duration; however, patients remained on adjunctive phenobarbital significantly longer than clonidine. As monotherapy, clonidine was found to decrease NAS treatment an average of 11 days and decrease overall LOS an average of six days compared to morphine treatment.Conclusion: Treatment with buprenorphine or clonidine has shown favorable effects by reducing length of NAS treatment and LOS. These emerging therapies may be as effective as morphine or methadone for NAS, in combination with nonpharmacologic strategies. Long-term follow-up is needed.

The Effects of Neonatal Abstinence Syndrome on Language Delay from Birth to 10 Years

PURPOSE

To examine the longitudinal effects of a history of neonatal abstinence syndrome (NAS) on language development over the first 10 years of life.

DESIGN AND METHODS

This study used a retrospective, longitudinal design. The data were analyzed using generalized linear mixed models (GLMM) to examine the effects of NAS on language delay over time while controlling for demographic, prenatal, and household factors.

RESULTS

There was a significant difference in the pattern of language delays over time between the NAS and non-NAS groups. At the age of 5 (est: -1.788, p < .001), children with a history of NAS had a decreased log odds of developing language delays than those without NAS. Conversely, compared with age 1, at the age of 10 (est: 1.098 p < .001), children with a history of NAS had an increased log odds of developing language delays than those without NAS.

CONCLUSIONS

Children with a history of NAS had significantly different rates of language delays over time. Children with a history of NAS had significantly higher rates of language delays at 10 years than children without NAS.

PRACTICE IMPLICATIONS

There is a need to increase developmental surveillance, along with referrals for specialized services, for children with a history of NAS through middle childhood.

Prenatal opioid exposure: The next neonatal neuroinflammatory disease

The rates of opioid use disorder during pregnancy have more than quadrupled in the last decade, resulting in numerous infants suffering exposure to opioids during the perinatal period, a critical period of central nervous system (CNS) development. Despite increasing use, the characterization and definition of the molecular and cellular mechanisms of the long-term neurodevelopmental impacts of opioid exposure commencing in utero remains incomplete. Thus, in consideration of the looming public health crisis stemming from the multitude of infants with prenatal opioid exposure entering school age, we undertook an investigation of the effects of perinatal methadone exposure in a novel preclinical model. Specifically, we examined the effects of opioids on the developing brain to elucidate mechanisms of putative neural cell injury, to identify diagnostic biomarkers and to guide clinical studies of outcome and follow-up. We hypothesized that methadone would induce a pronounced inflammatory profile in both dams and their pups, and be associated with immune system dysfunction, sustained CNS injury, and altered cognition and executive function into adulthood. This investigation was conducted using a combination of cellular, molecular, biochemical, and clinically translatable biomarker, imaging and cognitive assessment platforms. Data reveal that perinatal methadone exposure increases inflammatory cytokines in the neonatal peripheral circulation, and reprograms and primes the immune system through sustained peripheral immune hyperreactivity. In the brain, perinatal methadone exposure not only increases chemokines and cytokines throughout a crucial developmental period, but also alters microglia morphology consistent with activation, and upregulates TLR4 and MyD88 mRNA. This increase in neuroinflammation coincides with reduced myelin basic protein and altered neurofilament expression, as well as reduced structural coherence and significantly decreased fractional anisotropy on diffusion tensor imaging. In addition to this microstructural brain injury, adult rats exposed to methadone in the perinatal period have significant impairment in associative learning and executive control as assessed using touchscreen technology. Collectively, these data reveal a distinct systemic and neuroinflammatory signature associated with prenatal methadone exposure, suggestive of an altered CNS microenvironment, dysregulated developmental homeostasis, complex concurrent neural injury, and imaging and cognitive findings consistent with clinical literature. Further investigation is required to define appropriate therapies targeted at the neural injury and improve the long-term outcomes for this exceedingly vulnerable patient population.

An Update on the Burden of Neonatal Abstinence Syndrome in the United States

OBJECTIVES

To provide an estimate on the most recent burden of neonatal abstinence syndrome (NAS) in the United States.

METHODS

The 2016 Kids' Inpatient Database, provided by the Healthcare Cost and Utilization Project and Agency for Healthcare Research and Quality and its partners, was used to identify patients with NAS in the United States. The data consisted of pediatric admissions from 4200 US hospitals recorded between January 1, 2016, and December 31, 2016. Data were converted to weighted form to project a national estimate on the possible number of neonates affected by NAS. Differences in sex, race, location, household income, primary payer form, length of stay, and total charges were studied.

RESULTS

The sample contained 32 128 patients with NAS (0.8%), among whom 17 164 (53.5%) were boys and 14 935 (46.5%) were girls (P < .001); 23 027 (80.4%) were white (P < .001), and 13 583 (42.3%) were from the southern parts of the United States (P < .001). Medicaid covered 83.8% of patients, and 40.2% had an income within the first quartile of national averages (P < .001). The overall mean and median length of stay were 16.45 and 12.00 days, respectively, and the mean and median total charges were calculated as $79 937.75 and $38 537.00, respectively. The total charges of NAS were $2 549 098 822.

CONCLUSIONS

The incidence of NAS is on a constant rise; the number of cases rose from 21 732 in 2012 to 32 128 in 2016. Hospital charges have also tripled over the last 7 years to $2.5 billion in 2016.

Neonatal Abstinence Syndrome

Opioid use and abuse have skyrocketed in the United States over the last decade. As a result, we have seen a substantial increase in neonates who are exposed to opioids in-utero. Anywhere from 55% to 94% of infants exposed to opioids will experience withdrawal, known as neonatal abstinence syndrome (NAS), and will require management of their symptoms in the hospital. It is important to know what to look for in an infant who is experiencing NAS, how to determine if treatment is needed and what type of treatment is indicated, and how to prepare the infant for discharge once they are stable. Unfortunately, there are no standardized care plans in place for the management of this population. Although assessment tools such as the Finnegan scoring systems are available, they are not validated and can be cumbersome and difficult to administer. Other methods of assessment are being studied and may prove to be more useful in the clinical setting of neonatal withdrawal. Neither nonpharmacologic nor pharmacologic interventions are standardized, with individual institutions determining their plan of care. Development of more standardized care could significantly improve the management of these patients. [Pediatr Ann. 2020;49(1):e3-e7.].

N-acetylcysteine mitigates acute opioid withdrawal behaviors and CNS oxidative stress in neonatal rats

BACKGROUND

Neonatal abstinence syndrome (NAS) is a significant problem. Opioid withdrawal induces oxidative stress and disrupts glutamate and glutathione homeostasis. We hypothesized that N-acetylcysteine (NAC) administered during acute opioid withdrawal in neonatal rats would decrease withdrawal behaviors and normalize CNS glutathione and glutamate.

METHODS

Osmotic minipumps with methadone (opioid dependent, OD) and saline (Sham) were implanted into Sprague Dawley dams 7 days prior to delivery. Pups were randomized to receive either naloxone plus saline or NAC (50-100 mg/kg), administered on postnatal day (PND) 7. We performed MR spectroscopy on PND6-7 before, 30 min, and 120 min after withdrawal. On PND7, we assessed withdrawal behaviors for 90 min after naloxone administration and summed scores during peak withdrawal period.

RESULTS

Mean summed behavioral scores were significantly different between groups (χ² (2) = 10.49, p = 0.005) but not different between NAC/NAL/OD and Sham (p = 0.14): SAL/NAL/OD = 17.2 ± 4.2 (n = 10); NAC/NAL/OD = 11.3 ± 5.6 (n = 9); Sham = 6.5 ± 0.6 (n = 4). SAL/NAL/OD pups had decreased glutathione at 120 min (p = 0.01), while NAC/NAL/OD pups maintained pre-withdrawal glutathione (p = 0.26).

CONCLUSION

In antenatal OD, NAC maintains CNS glutathione and mitigates acute opioid withdrawal in neonatal rats. This is the first study to demonstrate acute opioid withdrawal neurochemical changes in vivo in neonatal OD. NAC is a potential novel treatment for NAS.

Development and application of a primer and reference assessment tool for neonatal abstinence syndrome: A phase I pilot study

Background

Despite evidence for the efficacy of strict neonatal abstinence syndrome (NAS) treatment protocols, no national standardized education, diagnosis or treatment strategy is available.

Objectives

To describe the development and preliminary usability of an electronic bedside primer and decision support tool for medical providers, with embedded, interactive education and reference modules.

Methods

A panel of NAS experts established a standard operating procedure for the best practices of NAS management and developed an interactive mobile primer and reference and assessment tool to assess NAS with a curriculum and decision support system. We tested the feasibility and usability of this tool with n = 8 users, including registered nurses, last-year undergraduate nursing students and neonatal physicians.

Results

Participants rated the usability of the modules positively, with an average rating of 4.5 (scale of "1 = Strongly disagree" to "5 = Strongly agree"). Participants appreciated the ability to score the infant at the bedside using real time electronic entry. Seven users noted that the electronic device entry would be as accurate as paper or computer-based Electronic Medical Records entry and one user indicated it would potentially be more accurate during post-usability interviews. Users recommended improvements to the curriculum, including increasing detail of definitions and adding videos for additional NAS signs.

Conclusion

The assessment tool appears to be acceptable and usable by potential users. The strong ratings across users provides support for further testing whether its acceptability and usability remain high in a hospital setting, while assessing the impact on clinical outcomes such as newborn hospital length of stay.

Opioids affect the fetal brain: reframing the detoxification debate

Medication-assisted treatment is recommended for individuals with an opioid use disorder, including pregnant women. Medication-assisted treatment during pregnancy provides benefits to the mother and fetus, including better pregnancy outcomes, reduced illicit drug use, and improved prenatal care. An alternative approach, medically supervised withdrawal (detoxification), has, in recent reports, demonstrated a low risk of fetal death and low rates of relapse and neonatal abstinence syndrome. The rates of relapse and neonatal abstinence syndrome are questioned by many who view medically supervised withdrawal as unacceptable based on the concern for the potential adverse consequences of relapse to mother and baby. The impact of opioids on the fetal brain have not been integrated into this debate. Studies in animals and human brain tissues demonstrate opioid receptors in neurons, astroglia, and oligodendrocytes. Age-specific normative data from infants, children, and adults have facilitated investigation of the impact of opioids on the human brain in vivo. Collectively, these studies in animals, human neural tissue, adult brains, and the brains of children and newborns demonstrate that opioids adversely affect the human brain, primarily the developing oligodendrocyte and the processes of myelinization (white matter microstructure), connectivity between parts of the brain, and the size of multiple brain regions, including the basal ganglia, thalamus, and cerebellar white matter. These in vivo studies across the human lifespan suggest vulnerability of specific fronto-temporal-limbic and frontal-subcortical (basal ganglia and cerebellum) pathways that are also likely vulnerable in the human fetal brain. The long-term impact of these reproducible changes in the fetal brain in vivo is unclear, but the possibility of lasting injury has been suggested. In light of the recent data on medically supervised withdrawal and the emerging evidence suggesting adverse effects of opioids on the developing fetal brain, a new paradigm of care is needed that includes the preferred option of medication-assisted treatment but also the option of medically supervised opioid withdrawal for a select group of women. Both these treatment options should offer mental health and social services support throughout pregnancy. More research on both opioid exposure on the developing human brain and the impact of medically supervised withdrawal is required to identify appropriate candidates, optimal dose reduction regimens, and gestational age timing for initiating medically supervised withdrawal.

Pharmacologic Management of Neonatal Abstinence Syndrome Using a Protocol

BACKGROUND

The opioid epidemic in the United States has reached unprecedented proportions with far-reaching impacts on the most vulnerable population. The number of neonates born addicted to opioids has grown exponentially over the last several decades, leading to increased neonatal intensive care unit admissions and rising healthcare costs. Recent studies have yielded mixed results regarding which medication is most effective at relieving the symptoms of opioid withdrawal and reducing the weaning timeframe for babies with neonatal abstinence syndrome (NAS).

PURPOSE

To explore and compare the effectiveness of morphine versus methadone in the treatment for NAS using a standardized protocol.

METHOD

A literature search of PubMed and CINAHL was performed. The search yielded 10 quantitative studies that were analyzed for potential practice changes.

CONCLUSION

Based on current literature, following a standardized, stringent weaning protocol is more beneficial than the pharmacologic agent used. Studies reveal shorter weaning times and hospital stays in almost every group that followed rigid guidelines.

IMPLICATION FOR RESEARCH

Although current studies are promising for the desired outcome, more research is needed to develop appropriate protocol-based weaning regimens for management of NAS.

IMPLICATION FOR PRACTICE

As the occurrence of NAS continues to rise, its management must vigorously meet the challenges of the diagnosis. Institutions should reevaluate their current protocols based on reassuring data showing that stringent guidelines using morphine or methadone can improve clinical outcomes, reduce hospital length, and lower healthcare costs.

Research and policy priorities for addressing prenatal exposure to opioids in Alaska

The current opioid crisis in Alaska and the USA will negatively affect the health and wellbeing of future generations. The increasing number of infants born with neonatal opioid withdrawal syndrome (NOWS) has had a profound impact on families, health care providers and the child welfare system. This manuscript summarises the main themes of a Symposium held in Anchorage, Alaska with health care providers, researchers, elders and public health officials that focused on identifying emerging challenges, trends and potential solutions to address the increasing number of infants and children affected by maternal opioid use. Five areas of importance for research and policy development that would direct improvement in the care of infants with NOWS in Alaska are outlined with the goal of supporting a research agenda on opioid misuse and child health across the circumpolar north. Abbreviations: NOWS - neonatal opioid withdrawal syndrome; NAS - neonatal abstinence syndrome; MAT - medication-assisted treatment; NICU - neonatal intensive care unit; OATs - opioid agonist treatments; OCS - office of children's services; ANTHC - Alaska Native Tribal Health Consortium; OUD - opioid use disorder; SBIRT - screening, brief intervention and referral to treatment; ISPCTN - IDeA States Pediatric Clinical Trials Network; NIH - National Institutes of Health; ANMC - Alaska Native Medical Center; DHSS - Department of Health and Social Services; AAPP - All Alaska Pediatric Partnership.

Effect of a Neonatal Abstinence Syndrome Training Program on Nurses' Confidence and Ability to Use the Finnegan Scoring Tool

OBJECTIVE

To study the impact of an educational training program about neonatal abstinence syndrome (NAS) on the accuracy and reliability of NAS scoring by neonatal nurses when using the Finnegan Scoring Tool (FST), as well as the impact of training on nurses' confidence when using the FST.

DESIGN

Pilot project based on the Plan-Do-Study-Act framework with a pretest-posttest design.

SETTING/LOCAL PROBLEM

Although nurses at this agency receive training on the FST as part of their unit orientation education, there is not currently a program for assessing their confidence and accuracy when using this tool over time.

PARTICIPANTS

A convenience sample of registered nurses from the mother-baby (n = 11), NICU (n = 5), and pediatrics (n = 1) units.

INTERVENTION/MEASUREMENTS

Nurses watched a video of a neonate, used the FST to score the neonate's withdrawal symptoms, and completed a rating of their self-confidence when using the tool before and after an educational training session and at a 2- to 4-week follow-up session.

RESULTS

Participants improved to at least 90% interobserver reliability from the pretraining (64.7%) to posttraining (94.1%) assessments. No participants maintained 90% at follow-up. There appears to be a correlation between years of neonatal experience with tool confidence at pretraining (r = 0.52, N = 17, p < .04), posttraining (r = 0.52, N = 17, p < .03), and follow-up (r = 0.56, N = 17, p < .02) assessments. Pretraining reliability had a positive correlation to follow-up reliability (r = 0.51, p < .04). There was a statistically significant increase in confidence from before the training (mean = 2.06, standard deviation = 0.56) to after (mean = 2.47, standard deviation = .51; t[16] = -3.3, p < .004 [two-tailed]). Although participants reported feeling confident when using the scoring tool, they did not always accurately score symptoms. Participants reported positive buy-in and the need for additional training.

CONCLUSION

Advanced training in NAS and the FST may help nurses improve NAS symptom detection and contribute to better neonatal health outcomes.

Long-term mortality in mothers of infants with neonatal abstinence syndrome: A population-based parallel-cohort study in England and Ontario, Canada

BACKGROUND

Opioid addiction is a major public health threat to healthy life expectancy; however, little is known of long-term mortality for mothers with opioid use in pregnancy. Pregnancy and delivery care are opportunities to improve access to addiction and supportive services. Treating neonatal abstinence syndrome (NAS) as a marker of opioid use during pregnancy, this study reports long-term maternal mortality among mothers with a birth affected by NAS in relation to that of mothers without a NAS-affected birth in 2 high-prevalence jurisdictions, England and Ontario, Canada.

METHODS AND FINDINGS

We conducted a population-based study using linked administrative health data to develop parallel cohorts of mother-infant dyads in England and Ontario between 2002 and 2012. The study population comprised 13,577 and 4,966 mothers of infants with NAS and 4,205,675 and 929,985 control mothers in England and Ontario, respectively. Death records captured all-cause maternal mortality after delivery through March 31, 2016, and cause-specific maternal mortality to December 31, 2014. The primary exposure was a live birth of an infant with NAS, and the main outcome was all deaths among mothers following their date of delivery. We modelled the association between NAS and all-cause maternal mortality using Cox regression, and the cumulative incidence of cause-specific mortality within a competing risks framework. All-cause mortality rates, 10-year cumulative incidence risk of death, and crude and age-adjusted hazard ratios were calculated. Estimated crude 10-year mortality based on Kaplan-Meier curves in mothers of infants with NAS was 5.1% (95% CI 4.7%-5.6%) in England and 4.6% (95% CI 3.8%-5.5%) in Ontario versus 0.4% (95% CI 0.41%-0.42%) in England and 0.4% (95% CI 0.38%-0.41%) in Ontario for controls (p < 0.001 for all comparisons). Survival curves showed no clear inflection point or period of heightened risk. The crude hazard ratio for all-cause mortality was 12.1 (95% 11.1-13.2; p < 0.001) in England and 11.4 (9.7-13.4; p < 0.001) in Ontario; age adjustment did not reduce the hazard ratios. The cumulative incidence of death was higher among NAS mothers than controls for almost all causes of death. The majority of deaths were by avoidable causes, defined as those that are preventable, amenable to care, or both. Limitations included lack of direct measures of maternal opioid use, other substance misuse, and treatments or supports received.

CONCLUSIONS

In this study, we found that approximately 1 in 20 mothers of infants with NAS died within 10 years of delivery in both England and Canada-a mortality risk 11-12 times higher than for control mothers. Risk of death was not limited to the early postpartum period targeted by most public health programs. Policy responses to the current opioid epidemic require effective strategies for long-term support to improve the health and welfare of opioid-using mothers and their children.

Methadone, Buprenorphine, or Detoxification for Management of Perinatal Opioid Use Disorder: A Cost-Effectiveness Analysis

OBJECTIVE

To estimate whether methadone, buprenorphine, or detoxification treatment is the most cost-effective approach to the management of opioid use disorder (OUD) during pregnancy.

METHODS

We created a decision analytic model that compared the cost effectiveness (eg, the marginal cost of the strategy in U.S. dollars divided by the marginal effectiveness of the strategy, measured in quality-adjusted life-years [QALYs]) of initiation of methadone, buprenorphine, or detoxification in treatment of OUD during pregnancy. Probabilities, costs, and utilities were estimated from the existing literature. Incremental cost-effective ratios for each strategy were calculated, and a ratio of $100,000 per QALY was used to define cost effectiveness. One-way sensitivity analyses and a Monte Carlo probabilistic sensitivity analysis were performed.

RESULTS

Under base assumptions, initiation of buprenorphine was more effective at a lower cost than either methadone or detoxification and thus was the dominant strategy. Buprenorphine was no longer cost effective if the cost of methadone was 8% less than the base-case estimate ($1,646/month) or if the overall costs of detoxification were 121% less than the base-case estimate for the detoxification cost multiplier, which was used to increase the values of both inpatient and outpatient management of detoxification by a factor of 2. Monte Carlo analyses revealed that buprenorphine was the cost-effective strategy in 70.5% of the simulations. Direct comparison of buprenorphine with methadone demonstrated that buprenorphine was below the incremental cost-effective ratio in 95.1% of simulations; direct comparison between buprenorphine and detoxification demonstrated that buprenorphine was below the incremental cost-effective ratio in 45% of simulations.

CONCLUSION

Under most circumstances, we estimate that buprenorphine is the cost-effective strategy when compared with either methadone or detoxification as treatment for OUD during pregnancy. Nonetheless, the fact that buprenorphine was not the cost-effective strategy in almost one out of three of simulations suggests that the robustness of our model may be limited and that further evaluation of the cost-effective approach to the management of OUD during pregnancy is needed.

Trying to Do What Is Best: A Qualitative Study of Maternal-Infant Bonding and Neonatal Abstinence Syndrome

BACKGROUND

The maternal experience of caring for and bonding with infants affected by neonatal abstinence syndrome (NAS) has not been adequately characterized.

PURPOSE

This study was designed to describe mothers' experiences of, supports for, and barriers to bonding with infants with NAS.

METHODS

Semistructured interviews were coded using computer-assisted thematic content analysis. A code co-occurrence model was used to visualize the relationships between themes.

RESULTS

Thirteen mothers of infants with NAS participated. Trying to Do What Is Best emerged as the overarching theme with which several subthemes co-occurred. Subthemes that captured mothers loving their infants and bonding, feeling supported by the infants' fathers, feeling supported in the community, and receiving information from hospital staff were associated with mothers' trying to do what is best. Barriers to trying to do what is best included feeling unsupported in the community, guilt about taking medications or substances during pregnancy, feeling judged, and infant withdrawal.

IMPLICATIONS FOR PRACTICE

Specific implications for practice may be derived from the mothers' criticisms of NAS assessment tools. Mothers highlighted the value of reassurance and education from providers and the uniquely nonjudgmental support received from peers and male coparents.

IMPLICATIONS FOR RESEARCH

There is a lack of information about maternal-infant bonding in dyads affected by NAS and factors that contribute to parental loss of custody. Qualitative, quantitative, and mixed-methods studies in diverse populations might help researchers better understand the long-term outcomes of NAS and develop interventions that decrease family separation.

Treating infants with neonatal abstinence syndrome: an examination of three protocols

OBJECTIVE

Describe the characteristics of infants with NAS and determine if treatment outcomes varied between three protocols.

STUDY DESIGN

Based on medical record data, infant treatment for NAS-related withdrawal reflected one of three protocols: (1) No rescue dose (n = 836, 52.7%): Prescriber ordered initiation and escalation doses and determined when infants were eligible for weaning, (2) Rescue dose (n = 233, 14.7%): No rescue dose with the addition of a prescriber-ordered rescue dose, (3) Rescue dose by order set (n = 516, 32.6%): Rescue dose with addition of nurse-assisted order of morphine during escalation.

RESULTS

The no rescue dose group had longer length of stay, days to wean, and inpatient days, and greater initial morphine dose than the two rescue dose groups (p < 0.001). Treatment outcomes between the two rescue dose protocols did not differ.

CONCLUSIONS

The benefits related to rescue dosing further inform the development of a standardized NAS treatment protocol.

Racial association and pharmacotherapy in neonatal opioid withdrawal syndrome

OBJECTIVE

To determine if racial differences are associated with Neonatal Opioid Withdrawal Syndrome (NOWS) severity.

STUDY DESIGN

A 10-year (2008-2017) retrospective cohort of infants ≥35 weeks gestation with prenatal exposure to opioids was included. The primary measure was the need for pharmacotherapy. Multivariable logistic regression and propensity score analysis were performed.

RESULTS

Among 345 infants with NOWS, 111 (32%) were black infants with 70% of them requiring pharmacotherapy as compared with 84% of white infants. Upon adjusting for significant covariates (methadone, benzodiazepine use, and gestational age), black infants were 57% less likely than whites to require pharmacotherapy (Odds ratio: 0.43, 95%CI: 0.22-0.80, p = 0.009). Similar results were observed with propensity score analysis.

CONCLUSIONS

Significant racial disparity observed may be secondary to genetic variations in opioid pharmacogenomics and/or extrinsic factors. Large-scale studies are warranted to include race in predictive models for early pharmacological intervention.

Implications of Tennessee's Opioid Legislation for Neonatal Abstinence Syndrome

Opioid use during pregnancy is on the rise in the United States. Neonatal abstinence syndrome (NAS), also known as newborn drug withdrawal, is a public health epidemic. Between 2004 and 2014, Tennessee experienced a fivefold increase in NAS hospitalizations, from 1.5 to 8.0 per 1,000 live births. Soaring increases in the number of newborns with NAS nationwide have caught the attention of many federal and state lawmakers, especially given the unknown burdens associated with medical and social services needed by those affected over time. Tennessee opioid-related regulations and laws enacted between 2000 and 2018 were systematically reviewed and analyzed to identify each law's purpose; effects on families and individuals; pros and cons in terms of social, practical, and legal factors; and implications for nursing practice. Our findings were that Tennessee's laws are intended to decrease the number of opioids prescribed, ensure access to continued prenatal care and substance abuse management for mothers with substance use disorders, and reduce the ease of obtaining opioids. We also found that Tennessee lawmakers have enacted laws and regulations aimed at decreasing the abuse of opioids, but not reducing the incidence of NAS. As new laws are considered, it is critical that health care providers and lawmakers work together to ensure that the developed and enacted laws strike a balance between safely managing the care of both pregnant women and their newborns without producing negative outcomes.

Neonatal Abstinence Syndrome and Associated Neonatal and Maternal Mortality and Morbidity

OBJECTIVES

We examined demographic characteristics and birth outcomes of infants with neonatal abstinence syndrome (NAS) and their mothers in Canada.

METHODS

This retrospective, population-based, descriptive cross-sectional study of mother-infant dyads included all singleton live births in Canada (excluding Quebec), from 2005-2006 to 2015-2016 (N = 2 881 789). Demographic characteristics, NAS, and neonatal and maternal morbidities were identified from delivery hospitalization data (including diagnostic codes). The main composite outcomes were maternal and neonatal mortality and/or severe morbidity, including death and potentially life-threatening conditions in the mother and the infant, respectively. Logistic regression yielded adjusted odds ratios (aORs) and 95% confidence intervals (CIs).

RESULTS

The study included 10 027 mother-infant dyads with NAS. The incidence of NAS increased from 0.20% to 0.51%. Maternal mortality was 1.99 vs 0.31 per 10 000 women in the NAS group versus the comparison group (aOR = 6.53; 95% CI: 1.59 to 26.74), and maternal mortality and/or severe morbidity rates were 3.10% vs 1.35% (aOR = 2.21; 95% CI: 1.97 to 2.49). Neonatal mortality was 0.12% vs 0.19% (aOR = 0.28; 95% CI: 0.15 to 0.53), and neonatal mortality and/or severe morbidity rates were 6.36% vs 1.73% (aOR = 2.27; 95% CI: 2.06 to 2.50) among infants with NAS versus without NAS.

CONCLUSIONS

NAS incidence increased notably in Canada between 2005-2006 and 2015-2016. Infants with NAS had elevated severe morbidity, and their mothers had elevated mortality and severe morbidity. These results highlight the importance of implementing integrated care services to support the mother-infant dyad during childbirth and in the postpartum period.

Postpartum Nurses' Experience Caring for Infants With Neonatal Abstinence Syndrome

OBJECTIVES

In previous years, otherwise healthy infants with neonatal abstinence syndrome (NAS) in our hospital were transferred to the NICU and frequently treated with medication. Currently, infants with NAS room-in with their mothers and rarely require medication. We sought to understand the lived experience of nurses on maternity and well-newborn units caring for infants with NAS.

METHODS

We conducted focus groups of registered nurses on postpartum units at 2 hospitals using qualitative methodology. Themes were identified through consensus, and the focus groups were stopped when no new themes were identified.

RESULTS

Seventeen postpartum nurses participated in 5 focus groups. The following major themes emerged: (1) managing the expectations of parents of newborns with NAS, (2) current NAS protocol (positive aspects of rooming-in and challenges with withdrawal scoring tool), (3) inconsistencies in care and communication, (4) perceived increase in nursing workload on the postpartum unit, and (5) nurses' emotional response to the care of infants with NAS.

CONCLUSIONS

We highlight the perspectives of nursing staff on the well-newborn unit who were previously unaccustomed to caring for infants with NAS. With increasing numbers of infants with NAS and longer stays on the well-newborn unit, hospitals must prepare to better support staff and implement protocols that offer consistency in practice.

Increased Severity of Neonatal Abstinence Syndrome Associated With Concomitant Antenatal Opioid and Benzodiazepine Exposure

BACKGROUND

Polysubstance use is common among opioid-using women, yet its association with pharmacotherapy for neonatal abstinence syndrome (NAS) remains unclear. We hypothesized that benzodiazepine exposure would increase risk of an infant developing pharmacologically treated NAS.

METHODS

We conducted a retrospective cohort study of maternal-infant dyads enrolled in Tennessee Medicaid, using individual-level data linkage of vital records and administrative (ie, outpatient, inpatient, and prescription) data from 2009 to 2011. These data underwent chart review from 2013 to 2016 to obtain clinically relevant exposure data (eg, toxicology testing). The association of antenatal exposures with pharmacologically treated NAS was evaluated by using multivariable logistic regression, controlling for maternal and infant factors and clustered by hospital.

RESULTS

Among 112 029 maternal-infant dyads, we confirmed 822 cases of NAS, of which 598 (72.7%) were cases of pharmacologically treated NAS. Infants who developed pharmacologically treated NAS were more likely to have been exposed to antenatal benzodiazepines compared with infants with confirmed NAS not treated pharmacologically (40.9% vs 30.8%; P = .008). In adjusted analyses, benzodiazepine exposure was associated with greater risk of developing pharmacologically treated NAS (odds ratio: 1.51; 95% confidence interval: 1.04-2.21). Alternatively, exposure to tobacco, marijuana, cocaine, gabapentin, and selective serotonin reuptake inhibitors were not associated with increased risk of developing pharmacologically treated NAS.

CONCLUSIONS

Among a population of infants with intrauterine polysubstance exposure, benzodiazepine exposure was an independent predictor of an infant developing pharmacologically treated NAS. Obtaining history of antenatal benzodiazepine exposure among opioid-exposed infants may allow for risk stratification and development of personalized care plans.

A Dissemination and Implementation Science Approach to the Epidemic of Opioid Use Disorder in the United States

PURPOSE OF REVIEW

This review aims to (1) conceptualize the complexity of the opioid use disorder epidemic using a conceptual model grounded in the disease continuum and corresponding levels of prevention and (2) summarize a select set of interventions for the prevention and treatment of opioid use disorder.

RECENT FINDINGS

Epidemiologic data indicate non-medical prescription and illicit opioid use have reached unprecedented levels, fueling an opioid use disorder epidemic in the USA. A problem of this magnitude is rooted in multiple supply- and demand-side drivers, the combined effect of which outweighs current prevention and treatment efforts. Multiple primary, secondary, and tertiary prevention interventions, both evidence-informed and evidence-based, are available to address each point along the disease continuum-non-use, initiation, dependence, addiction, and death. If interventions grounded in the best available evidence are disseminated and implemented across the disease continuum in a coordinated and collaborative manner, public health systems could be increasingly effective in responding to the epidemic.