Methadone vs. Buprenorphine for In-Hospital Initiation: Which Is Better for Outpatient Care Retention in Patients with Opioid Use Disorder?

Pathways of care following opioid overdose among people with opioid use disorder: A multilevel cohort study

BACKGROUND

The care that people with opioid use disorder (OUD) receive during hospitalizations for opioid overdoses present opportunities for support, yet initiation of opioid agonist treatment (OAT) remains low. Therefore, we sought to determine factors associated with treatment initiation following hospitalization for an opioid overdose.

METHODS

We conducted a population-based cohort study of people with OUD discharged from hospital following an opioid overdose between January 1, 2014 and December 31, 2021 in Ontario, Canada. Our primary outcome was initiation of treatment (OAT and/or safer opioid supply) within 30 days of discharge. Proportional hazards frailty models were used to account for the clustering of hospital and geographic-level variables with cause-specific hazards ratios calculated for each factor.

RESULTS

Overall, 13,253 individuals experienced 22,848 opioid overdoses and were discharged from 175 hospitals across Ontario. Treatment was initiated in 10.3 % of opioid overdoses. Person-related variables associated with treatment initiation included hepatitis C diagnoses (HR=1.15, 95 % CI=1.01-1.30) and public drug benefit eligibility (HR=1.50, 95 % CI=1.36-1.66). Longer stays in hospital were also associated with a significant increase in treatment initiation over the first 10 days of follow-up only (HR=1.10 per 5 days in hospital; 95 % CI=1.06-1.15). People discharged from regions with the highest quantile of fatal opioid overdose rates had an increased hazard of treatment initiation (HR=1.26; 95 % CI=1.06-1.51), compared to regions in the lowest quantile.

CONCLUSION

The identification of factors associated with treatment initiation following overdose may be associated with promoting longer stays in hospital and enhancing accessibility in regions with less experience managing opioid overdoses.

Characteristics of women on opioid substitution therapy in primary healthcare in Tshwane (South Africa): a retrospective observational study

BACKGROUND

Women who use drugs face specific challenges compared with men such as higher rates of HIV infection, unsafe injecting practices, and intimate partner violence (IPV). However, this population's access to drug dependence treatment and gender-sensitive interventions remains limited, leading to unmet needs and increased vulnerability.

AIM

To investigate the characteristics of and associations with retention in care among women on opioid substitution therapy (OST) in a community-based primary care setting.

DESIGN & SETTING

A descriptive observational study within the Community Orientated Substance Use Programme in Tshwane, South Africa.

METHOD

Data from 199 women (aged >18 years) on OST was extracted from an electronic database and paper-based files. Data were analysed descriptively, and inferential analysis looked for association of variables with retention on OST for ≥6 months.

RESULTS

The majority of participants were unemployed, with 44.3% aged 20-29 years. During the initiation and course of OST, 39.2% of women had an intimate partner of which 37.2% reported IPV, and 19.2% were pregnant. Retention on OST was significantly associated with increasing age at initiation (P = 0.047), knowledge of HIV status (P = 0.029), an increase in the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) score (P = 0.023), and methadone dose (P<0.001). Factors such as race, employment status, health-system level, pregnancy, intimate partner using substances, IPV, route of administering opioids, and having tuberculosis and/or hepatitis C exposure did not show a significant relationship with retention on OST (P>0.05).

CONCLUSION

This study reveals specific vulnerabilities in women receiving OST, emphasising the need for the integration of interventions to address reproductive health, violence mitigation, infectious disease, and polydrug use into care.

Toward a Consensus on Strategies to Support Opioid Use Disorder Care Transitions Following Hospitalization: A Modified Delphi Process

BACKGROUND

Despite proliferation of acute-care interventions to initiate medications for opioid use disorder (MOUD), significant challenges remain to supporting care continuity following discharge. Research is needed to inform effective hospital strategies to support patient transitions to ongoing MOUD in the community.

OBJECTIVE

To inform a taxonomy of care transition strategies to support MOUD continuity from hospital to community-based settings and assess their perceived impact and feasibility among experts in the field.

DESIGN

A modified Delphi consensus process through three rounds of electronic surveys.

PARTICIPANTS

Experts in hospital-based opioid use disorder (OUD) treatment, care transitions, and hospital-based addiction treatment.

MAIN MEASURES

Delphi participants rated the impact and feasibility of 14 OUD care transition strategies derived from a review of the scientific literature on a scale from 1 to 9 over three survey rounds. Panelists were invited to suggest additional care transition strategies. Agreement level was calculated based on proportion of ratings within three points of the median.

KEY RESULTS

Forty-five of 71 invited panelists participated in the survey. Agreement on impact was strong for 12 items and moderate for 10. Agreement on feasibility was strong for 11 items, moderate for 7, and poor for 4. Strategies with highest ratings on impact and feasibility included initiation of MOUD in-hospital and provision of buprenorphine prescriptions or medications before discharge. All original 14 strategies and 8 additional strategies proposed by panelists were considered medium- or high-impact and were incorporated into a final taxonomy of 22 OUD care transition strategies.

CONCLUSIONS

Our study established expert consensus on impactful and feasible hospital strategies to support OUD care transitions from the hospital to community-based MOUD treatment, an area with little empirical research thus far. It is the hope that this taxonomy serves as a stepping-stone for future evaluations and clinical practice implementation toward improved MOUD continuity and health outcomes.

Medication for Opioid Use Disorder for Hospitalized Patients at Six New York City Public Hospitals with an Addiction Consult Service

OBJECTIVES

We explored medications for opioid use disorder treatment (MOUD) utilization in six New York City public hospitals that implemented the "Consultation for Addiction Care and Treatment in Hospitals (CATCH)" program.

METHODS

CATCH rolled out between October 2018 and February 2020. Data from the electronic health record were analyzed for the first year post-implementation. Eligible cases included adults with an opioid-related diagnosis admitted to inpatient departments served by CATCH, with a stay of ≥1 night. Patients were classified as receiving an MOUD order if there was at least 1 order of buprenorphine, methadone, or naltrexone. Logistic regression modeled the impact of CATCH consults on MOUD orders, controlling for demographic and clinical characteristics with hospital as a random effect.

RESULT

Among 2117 eligible patients, 71.4% were male, with a mean age of 51.2 years, and 27.2% identified as Black, 21.2% as White, and 34.5% as Hispanic. MOUD was ordered in 60.9% of admissions, and 41.5% had a completed CATCH consult. Patients identified as Black had lower odds of receiving a MOUD order than those identified as White (OR: 0.52, 95% CI: 0.38-0.71; P < 0.001). Patients with a CATCH consult had higher odds of receiving a MOUD order (OR: 3.22, 95% CI: 2.54-4.07; P < 0.001).

CONCLUSION

Majority of patients in our sample received a MOUD order, with higher odds among those with a CATCH consult. Further research is needed on the drivers of racial disparities in MOUD, and other contextual, organizational, and population-specific barriers and facilitators contributing to receipt of hospital-based addiction consult services and MOUD.

Leveraging Trauma Informed Care for Digital Health Intervention Development in Opioid Use Disorder

Digital health refers to the use of information and communication technologies in medicine (including smartphone apps, wearables, other non-invasive sensors, informatics and telehealth platforms) to prevent illness, deliver treatment, and promote wellness. This rapidly proliferating group of technologies has the potential to reduce harm for people with opioid use disorder (OUD) and facilitate the recovery process; however, development in this space for OUD has been slower compared to that for other medical conditions. Unique issues with OUD management surrounding patient provider relationships, interaction with the healthcare system, autonomy and trust sometimes hinder care approaches, including those in digital health. The trauma informed care framework (TIC), developed for use by organizations to support individuals who have experienced trauma, has particular applicability for digital health interventions in OUD care. This manuscript will serve as a review of TIC principles and how they can be applied to digital health interventions to increase access, equity, and empowerment for people with OUD. We will highlight representative current and pipeline digital technologies for OUD, challenges with these technologies, TIC models for OUD, and the integration of TIC principles into digital technology development to better serve people with OUD. Finally, we will posit strategies to incorporate the aforementioned principles into future research efforts. We ultimately aim to use TIC as a lens through which to develop digital technologies to help individuals with OUD while minimizing harm.

Evolution of the substance use landscape: Implications for contingency management

Contingency management (CM), which involves the delivery of incentives upon meeting behavioral goals, has the potential to improve substance use treatment outcomes. The intervention allows for flexibility through numerous modifiable components including changes to incentive magnitude and schedule, target behavior, and intervention structure. Unfortunately, numerous changes in the substance use landscape have occurred in the past 10 to 15 years: Substances are more potent, overdose risk has increased, new substances and methods of use have been introduced, and substance classes are increasingly being intentionally and unintentionally mixed. These developments potentially undermine CM outcomes. We explored recent substance use changes due to legislative, regulatory, social, and economic factors for four substance classes: stimulants, opioids, tobacco, and cannabis. We discuss potential adjustments to the modifiable components of CM for future research in response to these changes. By continually adapting to the shifting substance use landscape, CM can maintain optimal efficacy.

Inpatient initiation of long-acting injectable buprenorphine at a community hospital: A retrospective case series

OBJECTIVES

Determine if long-acting injectable buprenorphine (LAIB) can be successfully and safely administered in the hospital with minimal sublingual buprenorphine lead-in and potentially improve follow-up engagement in care.

METHODS

We performed a retrospective case series of 46 patients who received LAIB while hospitalized at a safety-net community hospital. We abstracted demographic information, details about substance use disorder treatment history, in-hospital buprenorphine initiation methods and follow-up data from inpatient and outpatient electronic medical records.

RESULTS

In total, 46 hospitalized patients received LAIB during the study period. The majority of our patients were older Black adults with Medicaid who self-reported intranasal heroin use. A low-dose buprenorphine initiation protocol was used most commonly, either in sublingual or intravenous form, with only two cases of precipitated withdrawal occurring during the buprenorphine initiation process and no cases of precipitated withdrawal after the administration of LAIB. 87% (40) of the patients received LAIB after receiving either sublingual or IV buprenorphine for fewer than the recommended seven days. Of the 46 hospitalized patients who received LAIB, 23 (50%) attended a follow-up addiction medicine appointment within 30 days of discharge.

CONCLUSIONS

Hospital administration of LAIB could play an important role in retention in care after hospital discharge.

The addiction consultation service for hospitalized patients with substance use disorder: An integrative review of the evidence

INTRODUCTION

The Addiction Consultation Service has emerged as a model of care for hospitalized patients with substance use disorder. The aim of this integrative review is to characterize the Addiction Consultation Service in general hospital settings, assess its impact on clinical outcomes, identify knowledge gaps, and offer guidance for implementation.

METHODS

We conducted an integrative review of studies from January 2002 to August 2023, applying specific inclusion criteria to collect study design, service characteristics, staffing models, utilization, and health outcomes. Additionally, a comprehensive quality appraisal was conducted for all studies considered for inclusion.

RESULTS

Findings from 41 studies meeting inclusion criteria were synthesized and tabulated. Study designs included six reports from three randomized controlled trials, five descriptive studies, and 30 observational studies. The most common study setting was the urban academic medical center. Studies evaluated the structure, process, and outcomes of the Addiction Consultation Service. A majority of studies, particularly those utilizing more rigorous designs, reported positive outcomes involving medication initiation, linkage to post-discharge care, and utilization outcomes.

CONCLUSIONS

The Addiction Consultation Service care model improves quality of care for hospitalized patients with substance use disorder. Additional research is needed to assess its effectiveness across diverse medical settings, determine the effectiveness of varying staffing models, demonstrate impactful outcomes, and establish funding mechanisms to support sustainability.

Opioid use disorder in pediatric populations: considerations for perioperative pain management and precision opioid analgesia

INTRODUCTION

Opioids are commonly used for perioperative analgesia, yet children still suffer high rates of severe post-surgical pain and opioid-related adverse effects. Persistent and severe acute surgical pain greatly increases the child's chances of chronic surgical pain, long-term opioid use, and opioid use disorder.

AREAS COVERED

Enhanced recovery after surgery (ERAS) protocols are often inadequate in treating a child's severe surgical pain. Research suggests that 'older' and longer-acting opioids such as methadone are providing better methods to treat acute post-surgical pain. Studies indicate that lower repetitive methadone doses can decrease the incidence of chronic persistent surgical pain (CPSP). Ongoing research explores genetic components influencing severe surgical pain, inadequate opioid analgesia, and opioid use disorder. This new genetic research coupled with better utilization of opioids in the perioperative setting provides hope in personalizing surgical pain management, reducing pain, opioid use, adverse effects, and helping the fight against the opioid pandemic.

EXPERT OPINION

The opioid and analgesic pharmacogenomics approach can proactively 'tailor' a perioperative analgesic plan to each patient based on underlying polygenic risks. This transition from population-based knowledge of pain medicine to individual patient knowledge can transform acute pain medicine and greatly reduce the opioid epidemic's socioeconomic, personal, and psychological strains globally.

Low-dose buprenorphine initiation and treatment continuation among hospitalized patients with opioid dependence: A retrospective cohort study

BACKGROUND

Buprenorphine is an effective treatment for both opioid use disorder (OUD) and chronic pain, but buprenorphine's pharmacology complicates treatment initiation for some patients. Low-dose buprenorphine initiation is a novel strategy that may reduce precipitated withdrawal. Few studies describe what patient populations benefit most from low-dose initiations and the clinical parameters that impact treatment continuation. This study aimed to 1) describe experiences with low-dose buprenorphine initiation, including both successes and failures among hospitalized patients in an urban underserved community; 2) identify patient- and treatment-related characteristics associated with unsuccessful initiation and treatment discontinuation; and 3) assess buprenorphine treatment continuation after discharge.

METHODS

This is a retrospective cohort study with opioid-dependent (meaning OUD or receiving long-term opioid therapy for chronic pain) patients who underwent low-dose buprenorphine initiation during hospital admission from October 2021 through April 2022. The primary outcome was successful completion of low-dose initiation. Bivariate analysis identified patient- and treatment-related factors associated with unsuccessful initiation. Secondary outcomes were buprenorphine treatment discontinuation at post-discharge follow-up, 30- and 90-days.

RESULTS

Of 28 patients who underwent low-dose buprenorphine initiation, 68 % successfully completed initiation. Unsuccessful initiation was associated with receipt of methadone during admission and higher morphine milligram equivalents (MME) of supplemental opioids. Of 22 patients with OUD, the percent receiving a buprenorphine prescription at a follow-up visit, 30 days, and 90 days, respectively, was 46 %, 36 %, and 36 %. Of 6 patients with chronic pain, the percent receiving a buprenorphine prescription at a follow-up visit, 30 days, and 90 days, respectively, was 100 %, 100 %, and 83 %.

CONCLUSION

Low-dose buprenorphine initiation can be successful in opioid-dependent hospitalized patients. Patients taking methadone or requiring higher MME of supplemental opioids may have more difficulty with the low-dose buprenorphine initiation approach, but these findings should be replicated in larger studies. This study suggests patient- and treatment-related factors that clinicians could consider when determining the optimal treatment strategy for patients wishing to transition to buprenorphine.

Impact of Potential Case Misclassification by Administrative Diagnostic Codes on Outcome Assessment of Observational Study for People Who Inject Drugs

Introduction

Initiation of medications for opioid use disorder (MOUD) within the hospital setting may improve outcomes for people who inject drugs (PWID) hospitalized because of an infection. Many studies used International Classification of Diseases (ICD) codes to identify PWID, although these may be misclassified and thus, inaccurate. We hypothesized that bias from misclassification of PWID using ICD codes may impact analyses of MOUD outcomes.

Methods

We analyzed a cohort of 36 868 cases of patients diagnosed with Staphylococcus aureus bacteremia at 124 US Veterans Health Administration hospitals between 2003 and 2014. To identify PWID, we implemented an ICD code-based algorithm and a natural language processing (NLP) algorithm for classification of admission notes. We analyzed outcomes of prescribing MOUD as an inpatient using both approaches. Our primary outcome was 365-day all-cause mortality. We fit mixed-effects Cox regression models with receipt or not of MOUD during the index hospitalization as the primary predictor and 365-day mortality as the outcome.

Results

NLP identified 2389 cases as PWID, whereas ICD codes identified 6804 cases as PWID. In the cohort identified by NLP, receipt of inpatient MOUD was associated with a protective effect on 365-day survival (adjusted hazard ratio, 0.48; 95% confidence interval, .29-.81; P < .01) compared with those not receiving MOUD. There was no significant effect of MOUD receipt in the cohort identified by ICD codes (adjusted hazard ratio, 1.00; 95% confidence interval, .77-1.30; P = .99).

Conclusions

MOUD was protective of all-cause mortality when NLP was used to identify PWID, but not significant when ICD codes were used to identify the analytic subjects.

Extended-release Buprenorphine Administered at Discharge in Hospitalized Persons With Opioid Use Disorder: A Case Series

INTRODUCTION

Monthly subcutaneous injectable buprenorphine (XR-Bup) is an option for treatment of opioid use disorder (OUD) that addresses some sublingual buprenorphine adherence barriers and is infrequently offered to hospitalized patients with OUD.

METHODS

A retrospective case series was performed for patients receiving XR-Bup upon discharge from 1 academic medical center. Demographic information, diagnoses, follow-up, and documented factors informing the selection of XR-Bup were extracted from the electronic health record.

RESULTS

In 1 year, 37 hospitalized patients with OUD received XR-Bup at discharge. The average age was 37.6 years, and patients were primarily Medicaid insured with an injection-related infection. The most common documented factors informing the selection of XR-Bup were as follows: previous sublingual buprenorphine adherence barriers, concurrent stimulant use disorder, and patient preference. Sixty-four percent of patients scheduled for follow-up attended appointments, and 55% received a second dose of XR-Bup.

CONCLUSIONS

Subcutaneous injectable buprenorphine is an option for OUD treatment among hospitalized patients providing 30 or more days of buprenorphine coverage in the postdischarge period.

Caring for Our Patients With Opioid Use Disorder in the Perioperative Period: A Guide for the Anesthesiologist

Opioid use disorder (OUD) is a rising public health crisis, impacting millions of individuals and families worldwide. Anesthesiologists can play a key role in improving morbidity and mortality around the time of surgery by informing perioperative teams and guiding evidence-based care and access to life-saving treatment for patients with active OUD or in recovery. This article serves as an educational resource for the anesthesiologist caring for patients with OUD and is the second in a series of articles published in Anesthesia & Analgesia on the anesthetic and analgesic management of patients with substance use disorders. The article is divided into 4 sections: (1) background to OUD, treatment principles, and the anesthesiologist; (2) perioperative considerations for patients prescribed medications for OUD (MOUD); (3) perioperative considerations for patients with active, untreated OUD; and (4) nonopioid and nonpharmacologic principles of multimodal perioperative pain management for patients with untreated, active OUD, or in recovery. The article concludes with a stepwise approach for the anesthesiologist to support OUD treatment and recovery. The anesthesiologist is an important leader of the perioperative team to promote these suggested best practices and help save lives.

Evaluation of a Primary Care-Based Multidisciplinary Transition Clinic for Patients Newly Initiated on Buprenorphine in the Emergency Department

BACKGROUND

Care transitions represent vulnerable events for patients newly initiating medications for opioid use disorder (MOUD). Multidisciplinary primary care-based transition clinics may improve care linkage and retention in MOUD treatment. Additionally, these interventions may help primary care clinicians (PCPs) overcome barriers to adopting MOUD into practice. In this evaluation, we assessed the impact of a primary care-based transition clinic for patients newly initiating buprenorphine for opioid use disorder (OUD) in the emergency department.

METHODS

We conducted a retrospective program evaluation within a single academic health system involving adults who newly initiated buprenorphine for OUD through an emergency department-based program and were referred to follow up in either a dedicated multidisciplinary primary care-based transition clinic (SPARC) vs referral to usual primary care (UPC). We performed descriptive analyses comparing patient demographics, referral volume, linkage to care, treatment retention, and markers of high-quality care between the 2 groups. A log-rank test was used to determine the difference in probabilities of retention between SPARC and UPC over 6 months.

RESULTS

Over 12 months, the number of referrals to SPARC was greater than to UPC (N = 64 vs N = 26). About 58% of patients referred to SPARC attended an initial visit vs 38% referred to UPC. Treatment retention was consistently greater in SPARC than UPC (1 m: 90% vs 60%; 3 m: 76% vs 40%; 6 m: 60% vs 30%). Markers of care quality including naloxone provision (100% vs 80%) and infectious screening (81% vs 40%) were greater in SPARC clinic. SPARC was associated with a statistically significant increased probability of retention in treatment as compared to UPC (P < .01).

CONCLUSIONS

In this observational evaluation, a primary care-based multidisciplinary transition clinic for patients initiating buprenorphine MOUD was associated with expanded access to longitudinal OUD treatment and superior linkage to care, retention in care, and quality of care compared to referral to usual primary care. Further research using a more rigorous research design is required to further evaluate these findings.

Current and emerging pharmacotherapies for opioid dependence treatments in adults: a comprehensive update

INTRODUCTION

Opioid use disorder (OUD) is characterized by compulsive opioid seeking and taking, intense drug craving, and intake of opioids despite negative consequences. The prevalence of OUDs has now reached an all-time high, in parallel with peak rates of fatal opioid-related overdoses, where 15 million individuals worldwide meet the criteria for OUD. Further, in 2020, 120,000 opioid-related deaths were reported worldwide with over 75,000 of those deaths occurring within the United States.

AREAS COVERED

In this review, we highlight pharmacotherapies utilized in patients with OUDs, including opioid replacement therapies, and opioid antagonists utilized for opioid overdoses and deterrent of opioid use. We also highlight newer treatments, such as those targeting the neuroimmune system, which are potential new directions for research given the recently established role of opioids in activating neuroinflammatory pathways, as well as over the counter remedies, including kratom, that may mitigate withdrawal.

EXPERT OPINION

To effectively treat OUDs, a deeper understanding of the current therapeutics being utilized, their additive effects, and the added involvement of the neuroimmune system are essential. Additionally, a complete understanding of opioid-induced neuronal alterations and therapeutics that target these abnormalities - including the neuroimmune system - is required to develop effective treatments for OUDs.