Association of Duration of Methadone or Buprenorphine Use During Pregnancy With Risk of Nonfatal Drug Overdose Among Pregnant Persons With Opioid Use Disorder in the US

Pregnancy-associated homicide, suicide and unintentional opioid-involved overdose deaths, North Carolina 2018-2019

OBJECTIVE

Rates of death due to homicide, suicide and overdose during pregnancy and the first year postpartum have increased substantially in the USA in recent years. The aims of this study were to use 2018-2019 data on deaths identified for review by the North Carolina Maternal Mortality Review Committee (NC-MMRC), data from the North Carolina Violent Death Reporting System (NC-VDRS) and data from the Statewide Unintentional Drug Overdose Reporting System (NC-SUDORS) to examine homicide, suicide and unintentional opioid-involved overdose deaths during pregnancy and the first year postpartum.

METHODS

We linked data from the 2018-2019 NC-MMRC to suicide and homicide deaths among women ages 10-50 years from the 2018-2019 NC-VDRS and to unintentional opioid-involved overdose deaths among women ages 10-50 years from the 2018-2019 NC-SUDORS. We conducted descriptive analyses to examine the prevalence of demographic characteristics and the circumstances surrounding each cause of death.

RESULTS

From 2018 to 2019 in North Carolina, there were 23 homicides, nine suicides and 36 unintentional opioid-involved overdose deaths (9.7, 3.8 and 15.1 per 100 000 live births, respectively) during pregnancy and the first year postpartum. Most homicide deaths (87.0%) were by firearm, and more than half (52.5%) were related to intimate partner violence. More than two-thirds of women who died by suicide had a current mental health problem (77.8%). Less than one-fourth (22.2%) of those who died by unintentional opioid-involved overdose had a known history of substance use disorder treatment.

CONCLUSION

Our approach to quantifying and describing these causes of pregnancy-associated death can serve as a framework for other states to inform data-driven prevention.

Co-occurring conditions during pregnancy and hospitalizations in the first year postpartum among persons with opioid use disorder

INTRODUCTION

Pregnant persons with opioid use disorder (OUD) face a multitude of comorbid conditions that may increase the risk of adverse drug and health outcomes. This study characterizes typologies of comorbidities among pregnant persons with OUD and assesses the associations of these typologies with hospitalizations in the first year postpartum.

METHODS

A cohort of pregnant persons with OUD at delivery in 2018 were identified in a Pennsylvania statewide hospital dataset (n = 2055). Latent class analysis assessed 12 comorbid conditions including substance use disorders (SUDs), mental health conditions, and infections. Multivariable logistic regressions examined the association between comorbidity classes and hospitalizations (all-cause, OUD-specific, SUD-related, mental health-related) during early (0-42 days) and late (43-365 days) postpartum.

RESULTS

A three-class model best fit the data. Classes included low comorbidities (56.9% of sample; low prevalence of co-occurring conditions), moderate polysubstance/depression (18.4%; some SUDs, all with depression), and high polysubstance/bipolar disorder (24.7%; highest probabilities of SUDs and bipolar disorder). Overall, 14% had at least one postpartum hospitalization. From 0 to 42 days postpartum, the moderate polysubstance/depression and high polysubstance/bipolar disorder classes had higher odds of all-cause and mental health-related hospitalization, compared to the low comorbidities class. From 43 to 365 days postpartum, the high polysubstance/bipolar disorder class had higher odds of all-cause hospitalizations, while both the high polysubstance/depression and moderate polysubstance/bipolar disorder classes had higher odds of SUD-related and mental health-related hospitalizations compared to the low comorbidities class.

CONCLUSIONS

Findings highlight the need for long-term, multidisciplinary healthcare delivery interventions to address comorbidities and prevent adverse postpartum outcomes.

Strategies to improve delivery of equitable and evidence-informed care for pregnant and birthing people with a substance use disorder in acute care settings: A scoping review protocol

This protocol outlines a proposed scoping review to characterize evidence on implementation and quality improvement (QI) strategies that aim to improve equitable, evidence-informed care delivery for pregnant and birthing people with substance use disorder (SUD) in acute care. Untreated SUD during pregnancy is associated with an increased risk of overdose and severe maternal morbidity. Acute care settings are one important place to deliver equitable, evidence-informed clinical care. While clinical practice guidelines for substance use treatment and care of pregnant and birthing people with SUD exist, there are gaps in implementation. Our population of interest is pregnant and birthing people with SUD in an acute care setting. We will include US-based studies that describe or evaluate implementation or QI strategies, including experimental, observational, and descriptive studies published from 2016 to 2023. The proposed scoping review will be conducted in accordance with JBI methodology for scoping reviews and registered at OSF (registration number: BC4VZ). We will search MEDLINE (PubMed), CINAHL Complete (EBSCO), Scopus (Elsevier), and APA PsychInfo (Ovid) for published studies. Conference proceedings and Perinatal Quality Collaborative websites will be searched for grey literature. Two reviewers will independently screen then extract studies that meet inclusion criteria using a data extraction tool. The completion of this scoping review will help illuminate strengths and gaps in research and practice that aim to inform substance use treatment and care in acute care settings for pregnant and birthing people with SUD.

The Psychiatrist's Role in Treating Perinatal Opioid Use Disorder and Reducing Maternal Mortality

Drug overdose is a leading cause of maternal mortality. Psychiatrists can play a critical role in reducing these deaths by delivering effective evidence-based treatments for perinatal opioid use disorder (POUD), including the use of buprenorphine. Medications for POUD (i.e., buprenorphine, methadone) are life-saving treatments, but only half of those who are diagnosed as having POUD will receive this treatment, which can result in an increased risk for return to opioid use, overdose, and death. Psychiatrists are well positioned to prescribe buprenorphine given the Drug Enforcement Administration's (DEA) removal of the requirement to submit a Notice of Intent to prescribe buprenorphine for the treatment of opioid use disorders. Psychiatrists who have a current DEA registration that includes Schedule III authority may now prescribe buprenorphine for opioid use disorders; the training requirements to do so are outlined herein. This article reviews the standard of care for screening, diagnosis, and treatment of POUD, and prescribing buprenorphine for POUD, as well as shared decision-making for medication selection, induction, and maintenance of buprenorphine during pregnancy, labor and delivery, and the postpartum year.

Health Inequities Among People Who Use Drugs in a Post-Dobbs America: The Case for a Syndemic Analysis

Punitive policy responses to substance use and to abortion care constitute direct attacks on personal liberty and bodily autonomy. In this article, we leverage the concept of "syndemics" to anticipate how the already synergistic stigmas against people who use drugs and people who seek abortion services will be further compounded the Dobbs decision.

Perinatal morphine but not buprenorphine affects gestational and offspring neurobehavioral outcomes in mice

Within the national opioid epidemic, there has been an increase in the number of infants exposed to opioids in utero. Additionally, opioid agonist medications are the standard of care for women with opioid use disorder during pregnancy. Buprenorphine (BUP), a partial µ -opioid receptor agonist, has been successful in improving gestational and neonatal outcomes. However, in utero exposure has been linked to childhood cognitive and behavioral problems. Therefore, we sought to compare offspring cognitive and behavioral outcomes after prenatal exposure to a clinically relevant low dose of BUP compared to morphine (MO), a full µ -opioid receptor agonist and immediate metabolite of heroin. We used a mouse model to assess gestational and offspring outcomes. Mouse dams were injected once daily s.c. with saline (SAL, n = 12), MO (10 mg/kg, n = 15), or BUP (0.1 mg/kg, n = 16) throughout pre-gestation, gestation, and lactation until offspring were weaned on postnatal day (P)21. Offspring social interaction and exploratory behavior were assessed, along with executive function via the touchscreen 5 choice serial reaction time task (5CSRTT). We then quantified P1 brain gene expression in the frontal cortex and amygdala (AMG). Perinatal MO but not BUP exposure decreased gestational weight gain and was associated with dystocia. In adolescent offspring, perinatal MO but not BUP exposure increased social exploration in males and grooming behavior in females. In the 5CSRTT, male MO exposed offspring exhibited increased impulsive action errors compared to male BUP offspring. In the AMG of P1 MO exposed offspring, we observed an increase in gene expression of targets related to activity of microglia. Importantly, both MO and BUP caused acute hyperlocomotion in the dams to a similar degree, indicating that the selected doses are comparable, in accordance with previous dose comparisons on analgesic and reward efficacy. These data suggest that compared to MO, low dose BUP improves gestational outcomes and has less of an effect on the neonatal offspring brain and later adolescent and adult behavior.

Duration of medication for opioid use disorder during pregnancy and postpartum by race/ethnicity: Results from 6 state Medicaid programs

BACKGROUND

Medication for opioid use disorder (MOUD) is evidence-based treatment during pregnancy and postpartum. Prior studies show racial/ethnic differences in receipt of MOUD during pregnancy. Fewer studies have examined racial/ethnic differences in MOUD receipt and duration during the first year postpartum and in the type of MOUD received during pregnancy and postpartum.

METHODS

We used Medicaid administrative data from 6 states to compare the percentage of women with any MOUD and the average proportion of days covered (PDC) with MOUD, overall and by type of MOUD, during pregnancy and four postpartum periods (1-90 days, 91-180 days, 181-270 days, and 271-360 days postpartum) among White non-Hispanic, Black non-Hispanic, and Hispanic women diagnosed with OUD.

RESULTS

White non-Hispanic women were more likely to receive any MOUD during pregnancy and all postpartum periods compared to Hispanic and Black non-Hispanic women. For all MOUD types combined and for buprenorphine, White non-Hispanic women had the highest average PDC during pregnancy and each postpartum period, followed by Hispanic women and Black non-Hispanic women (e.g., for all MOUD types, 0.49 vs. 0.41 vs. 0.23 PDC, respectively, during days 1-90 postpartum). For methadone, White non-Hispanic and Hispanic women had similar average PDC during pregnancy and postpartum, and Black non-Hispanic women had substantially lower PDC.

CONCLUSIONS

There are stark racial/ethnic differences in MOUD during pregnancy and the first year postpartum. Reducing these inequities is critical to improving health outcomes among pregnant and postpartum women with OUD.

Trends in Methadone Dispensing for Opioid Use Disorder After Medicare Payment Policy Changes

Importance

A significant proportion of Medicare beneficiaries have a diagnosed opioid use disorder (OUD). Methadone and buprenorphine are both effective medications for the treatment of OUD (MOUDs); however, Medicare did not cover methadone until 2020.

Objective

To examine trends in methadone and buprenorphine dispensing among Medicare Advantage (MA) enrollees after 2 policy changes in 2020 related to methadone access.

Design, Setting, and Participants

This cross-sectional analysis of temporal trends in methadone and buprenorphine treatment dispensing assessed MA beneficiary claims from January 1, 2019, through March 31, 2022, captured by Optum's Clinformatics Data Mart. Of 9 870 791 MA enrollees included in the database, 39 252 had at least 1 claim for methadone, buprenorphine, or both during the study period. All available MA enrollees were included. Subanalyses by age and dual eligibility for Medicare and Medicaid status were conducted.

Exposures

Study exposures were (1) the Centers for Medicare & Medicaid Services (CMS) Medicare bundled payment reimbursement policy for OUD treatment and (2) the Substance Abuse and Mental Health Administration and CMS Medicare policies designed to facilitate access to treatment for OUD, specifically during the COVID-19 pandemic.

Main Outcomes and Measures

Study outcomes were trends in methadone and buprenorphine dispensing by beneficiary characteristics. National methadone and buprenorphine dispensing rates were calculated as claims-based dispensing rates per 1000 MA enrollees.

Results

Among the 39 252 MA enrollees with at least 1 MOUD dispensing claim (mean age, 58.6 [95% CI, 58.57-58.62] years; 45.9% female), 195 196 methadone claims and 540 564 buprenorphine pharmacy claims were identified, for a total of 735 760 dispensing claims. The methadone dispensing rate for MA enrollees was 0 in 2019 because the policy did not allow any payment until 2020. Claims rates per 1000 MA enrollees were low initially, increasing from 0.98 in the first quarter of 2020 to 4.71 in the first quarter of 2022. Increases were primarily associated with dually eligible beneficiaries and beneficiaries younger than 65 years. National buprenorphine dispensing rates were 4.64 per 1000 enrollees in quarter 1 of 2019, increasing to 7.45 per 1000 enrollees in quarter 1 of 2022.

Conclusions and Relevance

This cross-sectional study found that methadone dispensing increased among Medicare beneficiaries after the policy changes. Rates of buprenorphine dispensing did not provide evidence that beneficiaries substituted buprenorphine for methadone. The 2 new CMS policies represent an important first step in increasing access to MOUD treatment for Medicare beneficiaries.