Pilot randomized controlled trial of a hospital-based substance use treatment and recovery team (START) to improve initiation of medication for alcohol or opioid use disorder and linkage to follow-up care

Hospital Addiction Consultation Service and Opioid Use Disorder Treatment: The START Randomized Clinical Trial

Importance

Medications for opioid use disorder (MOUD) are effective, but hospitalized people with opioid use disorder (OUD) seldom receive MOUD while in the hospital or link with treatment after.

Objective

To test whether an addiction-focused consultation service, the Substance Use Treatment and Recovery Team (START), increases MOUD initiation during hospitalization and linkage to follow-up care after discharge.

Design, Setting, and Participants

This 1:1 randomized clinical trial grouped participants into the START intervention or usual care. The study was conducted between November 2021 and September 2023 at 3 hospitals in the following cities: Los Angeles, California; Albuquerque, New Mexico; and Springfield, Massachusetts. The last follow-up was in December 2023. Eligible individuals were 18 years and older and met criteria for OUD.

Intervention

START consists of an addiction medicine specialist and a care manager delivering a motivational and addiction-focused discharge planning intervention and follow-up calls.

Main Outcomes and Measures

Primary outcomes were the proportions of patients (1) initiating MOUD (naltrexone, buprenorphine, or methadone) during hospitalization (per electronic medical record data) and (2) successfully linking to OUD treatment within 30 days after discharge (per patient self-report).

Results

A total of 325 were consented and randomized to START (n = 164) or usual care (n = 161). Median (IQR) age was 41.0 (32.0-50.0) years. A total of 213 participants (65.5%) were male at birth, 28 (8.6%) were American Indian or Alaska Native, 21 (6.5%) were Black, 156 (48.0%) were Hispanic, and 125 (38.5%) were White. More than half, 175 (53.8%), were unhoused in the past year, and 163 (50.2%) were unemployed. START participants were more likely than usual care participants to initiate MOUD during hospitalization (94/164 [57.3%] vs 43/161 [26.7%], respectively; adjusted risk ratio [aRR], 2.10 [97.5% CI, 1.51-2.91]) and to link to OUD care after discharge (90/125 [72.0%] vs 50/104 [48.1%], respectively; aRR, 1.49 [97.5% CI, 1.15-1.93]).

Conclusions and Relevance

By addressing gaps in inpatient care, the hospital-based addiction-focused consultation service presented in this randomized clinical trial improved receipt of evidence-based treatment for people with OUD in the hospital and linkage to treatment after discharge.

Trial registration

ClinicalTrials.gov Identifier: NCT05086796.

Using inpatient addiction consult service via telehealth to improve pharmacotherapy initiation: An observational study

IntroductionThe COVID-19 pandemic exacerbated existing challenges in treating substance use disorders. This study explores the impact of telehealth on addiction consult services (ACS) medication initiation in hospitalized patients with alcohol and opioid use disorders (AUD and OUD).MethodsWe retrospectively analyzed data from adult patients who received their first ACS consultation in-person (pre-pandemic) and telehealth ACS consultation (during the pandemic). We compared medication initiation rates for AUD and OUD before and after ACS consultation.ResultsThe ACS completed 398 in-person consults and 473 telehealth consults. In-person ACS consultation increased the medication initiation rates from 3.41% for AUD in hospitalized patients without an ACS consult, to 45.45% for AUD after an ACS consult. For OUD pharmacotherapy initiation, an ACS consultation increased medication rates from 6.94% to 41.67% for OUD. Telehealth ACS consultation increased medication initiation rates from 5.16% to 66.20% for AUD and from 7.53% to 67.74% for OUD. Buprenorphine and naltrexone were the most commonly initiated medications for OUD and AUD, respectively.DiscussionThe adoption of telehealth by the hospital ACS during the pandemic effectively increased medication initiation rates for AUD and OUD, consistent with pre-pandemic, demonstrating its potential to expand access to addiction services. This approach could address the current shortage of addiction providers and serve underserved populations.

Addiction Consultation Services for Opioid Use Disorder Treatment Initiation and Engagement: A Randomized Clinical Trial

Importance

Medications for opioid use disorder (MOUD) are highly effective, but only 22% of individuals in the US with opioid use disorder receive them. Hospitalization potentially provides an opportunity to initiate MOUD and link patients to ongoing treatment.

Objective

To study the effectiveness of interprofessional hospital addiction consultation services in increasing MOUD treatment initiation and engagement.

Design, Setting, and Participants

This pragmatic stepped-wedge cluster randomized implementation and effectiveness (hybrid type 1) trial was conducted in 6 public hospitals in New York, New York, and included 2315 adults with hospitalizations identified in Medicaid claims data between October 2017 and January 2021. Data analysis was conducted in December 2023. Hospitals were randomized to an intervention start date, and outcomes were compared during treatment as usual (TAU) and intervention conditions. Bayesian analysis accounted for the clustering of patients within hospitals and open cohort nature of the study. The addiction consultation service intervention was compared with TAU using posterior probabilities of model parameters from hierarchical logistic regression models that were adjusted for age, sex, and study period. Eligible participants had an admission or discharge diagnosis of opioid use disorder or opioid poisoning/adverse effects, were hospitalized at least 1 night in a medical/surgical inpatient unit, and were not receiving MOUD before hospitalization.

Interventions

Hospitals implemented an addiction consultation service that provided inpatient specialty care for substance use disorders. Consultation teams comprised a medical clinician, social worker or addiction counselor, and peer counselor.

Main Outcomes and Measures

The dual primary outcomes were (1) MOUD treatment initiation during the first 14 days after hospital discharge and (2) MOUD engagement for the 30 days following initiation.

Results

Of 2315 adults, 628 (27.1%) were female, and the mean (SD) age was 47.0 (12.4) years. Initiation of MOUD was 11.0% in the Consult for Addiction Treatment and Care in Hospitals (CATCH) program vs 6.7% in TAU, engagement was 7.4% vs 5.3%, respectively, and continuation for 6 months was 3.2% vs 2.4%. Patients hospitalized during CATCH had 7.96 times higher odds of initiating MOUD (log-odds ratio, 2.07; 95% credible interval, 0.51-4.00) and 6.90 times higher odds of MOUD engagement (log-odds ratio, 1.93; 95% credible interval, 0.09-4.18).

Conclusions

This randomized clinical trial found that interprofessional addiction consultation services significantly increased postdischarge MOUD initiation and engagement among patients with opioid use disorder. However, the observed rates of MOUD initiation and engagement were still low; further efforts are still needed to improve hospital-based and community-based services for MOUD treatment.

Trial Registration

ClinicalTrials.gov Identifier: NCT03611335.

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.

Hospitalists' Attitudes and Experiences With Posthospitalization Care Transitions for Patients With Substance Use Disorders: A Cross-sectional Analysis

BACKGROUND

Medical hospitalizations are relatively common among individuals who have substance use disorders (SUDs) and represent opportunities for patient engagement and treatment. Posthospitalization transitions of care are an important element of providing full-spectrum inpatient SUD care; however, little is known about clinicians' experiences with postdischarge care transitions.

METHODS

We conducted a cross-sectional study surveying hospital-based medical clinicians (ie, "hospitalists") across 2 large health systems in the state of Utah to assess current practices, barriers, facilitators, and perceptions toward posthospitalization care transitions for patients with SUDs. We used Wilcoxon signed-rank tests to identify the most impactful barriers and facilitators among all respondents. We used logistic regression models to explore the influence of hospitalists' attitudes toward providing SUD care on perceived barriers and facilitators.

RESULTS

The survey was distributed to 429 individuals across 15 hospitals. Eighty-two hospitalists responded to the survey (response rate, 21.4%). Most respondents frequently cared for hospitalized patients with SUDs (n = 63, 77%) and prescribed medications for SUDs (n = 44, 56%). Four respondents (5%) felt that patients received adequate support during care transitions. Lack of social support ( P < 0.001) and social factors such as lack of transportation ( P < 0.001) were perceived as the largest barriers to successful care transitions. Conversely, a partnering outpatient clinic/clinician ( P < 0.001) and outpatient-based care coordination ( P < 0.001) were perceived as the strongest facilitators. Respondents' attitudes toward people with SUDs had a modest effect on perceived barriers and facilitators.

CONCLUSIONS

Hospitalists perceived increased outpatient SUD treatment infrastructure and transitional care supports as most important in facilitating posthospitalization care transitions for patients with SUDs.

Contextual barriers and enablers to establishing an addiction-focused consultation team for hospitalized adults with opioid use disorder

BACKGROUND

Hospitalization presents an opportunity to begin people with opioid use disorder (OUD) on medications for opioid use disorder (MOUD) and link them to care after discharge; regrettably, people admitted to the hospital with an underlying OUD typically do not receive MOUD and are not connected with subsequent treatment for their condition. To address this gap, we launched a multi-site randomized controlled trial to test the effectiveness of a hospital-based addiction consultation team (the Substance Use Treatment and Recovery Team (START)) consisting of an addiction medicine specialist and care manager team that provide collaborative care and a specified intervention to people with OUD during the inpatient stay. Successful implementation of new practices can be impacted by organizational context, though no previous studies have examined context prior to implementation of addiction consultation services (ACS). This study assessed pre-implementation context for implementing a specialized ACS and tailoring it accordingly.

METHODS

We conducted semi-structured interviews with hospital administrators, physicians, physician assistants, nurses, and social workers at the three study sites between April and August 2021 before the launch of the pragmatic trial. Using an analytical framework based on the Consolidated Framework for Implementation Research, we completed a thematic analysis of interview data to understand potential barriers or enablers and perceptions about acceptability and feasibility.

RESULTS

We interviewed 28 participants across three sites. The following themes emerged across sites: (1) START is an urgently needed model for people with OUD; (2) Intervention adaptations are recommended to meet local and cultural needs; (3) Linking people with OUD to community clinicians is a highly needed component of START; (4) It is important to engage stakeholders across departments and roles throughout implementation. Across sites, participants generally saw a need for change from usual care to support people with OUD, and thought the START was acceptable and feasible to implement. Differences among sites included tailoring the START to support the needs of varying patient populations and different perceptions of the prevalence of OUD.

CONCLUSIONS

Hospitals planning to implement an ACS in the inpatient setting may wish to engage in a systematic pre-implementation contextual assessment using a similar framework to understand and address potential barriers and contextual factors that may impact implementation. Pre-implementation work can help ensure the ACS and other new practices fit within each unique hospital context.