Impact of an addiction medicine consult team intervention in a Canadian inner city hospital on acute care utilization: a pragmatic quasi-experimental study

Expert Panel Consensus on the Effectiveness and Implementation of Models to Support Posthospitalization Care Transitions for People With Substance Use Disorders

OBJECTIVES

Hospitals are increasingly offering treatment for substance use disorders (SUDs) during medical admissions. However, there is a lack of consensus on the best approach to facilitating a successful transition to long-term medical and SUD care after hospitalization. We aimed to establish a hierarchy of existing SUD care transition models in 2 categories-effectiveness and implementation-using an expert consensus approach.

METHODS

We conducted a modified online Delphi study that convened 25 interdisciplinary clinicians with experience facilitating posthospitalization care transitions for patients with SUD. Panelists rated 10 prespecified posthospitalization care transition models according to 6 criteria concerning each model's anticipated effectiveness (eg, linkage to care, treatment retention) and implementation (eg, feasibility, acceptability). Ratings were made on a 9-point bidirectional scale. Group consensus was determined using the interpercentile range adjusted for symmetry.

RESULTS

After 3 rounds of the Delphi process (96% retention across all 3 rounds), consensus was reached on all 60 rating criteria. Interdisciplinary addiction consult teams (ACTs) and in-reach from partnering outpatient clinics were rated highest for effectiveness. Interdisciplinary ACTs and bridge clinics were rated highest for implementation. Screening, brief intervention, and referral to treatment; protocol implementation; and postdischarge outreach received the lowest ratings overall. Feasibility of implementation was perceived as the largest challenge for all highly rated models.

CONCLUSIONS

An expert consensus approach including diverse clinician stakeholders found that interdisciplinary ACT, in-reach from partnering outpatient clinics, and bridge clinics had the greatest potential to enhance posthospitalization care transitions for patients with SUD when considering both perceived effectiveness and implementation.

Quantitative and qualitative outcomes associated with inpatient addiction consultation: a scoping review

Background: Rates of acute care use, including hospital admission and readmission, are high for people who misuse substances. Hospitalization provides a valuable opportunity for intervention, but addiction treatment is often not addressed in the inpatient setting. Addiction consult services are a novel intervention intended to change hospital practices.Objectives: Comprehensively summarize outcomes (quantitative and qualitative) associated with inpatient addiction consult services.Methods: English-language searches of: Medline, CINAHL, Embase, The Cochrane Database of Systematic Reviews, PubMed, PsychInfo and Google Scholar were conducted from 2000 to November 2022. Studies reporting outcomes associated with addiction specialist consultation in the hospital setting were included. Four independent reviewers screened abstracts, and three reviewers screened full-text articles.Results: A total of 1,113 results underwent title and abstract screening and 43 studies were included. Outcomes associated with addiction specialist consultation were heterogeneous. Quantitative clinical outcomes focused on pharmacotherapy, healthcare utilization, and outpatient follow-up. Consultation improved rates of pharmacotherapy use, but had inconsistent effects on health care use, and overall follow-up rates were low. Consultation was associated with reduced overdose rates and 90-day mortality. Additional outcomes related to medical learners' educational achievements and qualitative results described positive effects on trainees, healthcare providers, and patients seen by specialized consult services. Access to dedicated providers improved experiences in hospitals for both people who misuse substances and their healthcare providers.Conclusion: Addiction specialist consultations are related to several clinical metrics, but some outcomes (e.g. pharmacotherapy initiation) may be more amenable to intervention than others (healthcare utilization). Qualitative findings provide important context for quantitative clinical results.

Post-hospitalization Care Transition Strategies for Patients with Substance Use Disorders: A Narrative Review and Taxonomy

Hospitalizations represent important opportunities to engage individuals with substance use disorders (SUD) in treatment. For those who engage with SUD treatment in the hospital setting, tailored supports during post-discharge transitions to longitudinal care settings may improve care linkages, retention, and treatment outcomes. We updated a recent systematic review search on post-hospitalization SUD care transitions through a structured review of published literature from January 2020 through June 2023. We then added novel sources including a gray literature search and key informant interviews to develop a taxonomy of post-hospitalization care transition models for patients with SUD. Our updated literature search generated 956 abstracts not included in the original systematic review. We selected and reviewed 89 full-text articles, which yielded six new references added to 26 relevant articles from the original review. Our search of five gray literature sources yielded four additional references. Using a thematic analysis approach, we extracted themes from semi-structured interviews with 10 key informants. From these results, we constructed a taxonomy consisting of 10 unique SUD care transition models in three overarching domains (inpatient-focused, transitional, outpatient-focused). These models include (1) training and protocol implementation; (2) screening, brief intervention, and referral to treatment; (3) hospital-based interdisciplinary consult team; (4) continuity-enhanced interdisciplinary consult team; (5) peer navigation; (6) transitional care management; (7) outpatient in-reach; (8) post-discharge outreach; (9) incentivizing follow-up; and (10) bridge clinic. For each model, we describe design, scope, approach, and implementation strategies. Our taxonomy highlights emerging models of post-hospitalization care transitions for patients with SUD. An established taxonomy provides a framework for future research, implementation efforts, and policy in this understudied, but critically important, aspect of SUD care.

Transitions in care between hospital and community settings for individuals with a substance use disorder: A systematic review

BACKGROUND AND AIMS

Individuals with a substance use disorder (SUD) have high rates of hospital service utilization including emergency department (ED) presentations and hospital admissions. Acute care settings offer a critical opportunity to engage individuals in addiction care and improve health outcomes especially given that the period of transition from hospital to community is challenging. This review summarizes literature on interventions for optimizing transitions in care from hospital to community for individuals with a SUD.

METHODS

The literature search focused on key terms associated with transitions in care and SUD. The search was conducted on three databases: MEDLINE, CINAHL, and PsychInfo. Eligible studies evaluated interventions acting prior to or during transitions in care from hospital to community and reported post-discharge engagement in specialized addiction care and/or return to hospital and were published since 2010.

RESULTS

Title and abstract screening were conducted for 2337 records. Overall, 31 studies met inclusion criteria, including 7 randomized controlled trials and 24 quasi-experimental designs which focused on opioid use (n = 8), alcohol use (n = 5), or polysubstance use (n = 18). Interventions included pharmacotherapy initiation (n = 7), addiction consult services (n = 9), protocol implementation (n = 3), screening, brief intervention, and referral to treatment (n = 2), patient navigation (n = 4), case management (n = 1), and recovery coaching (n = 3).

CONCLUSIONS

Both pharmacologic and psychosocial interventions implemented around transitions from acute to community care settings can improve engagement in care and reduce hospital readmission and ED presentations. Future research should focus on long-term health and social outcomes to improve quality of care for individuals with a SUD.