Substance use Attitudes, Beliefs, Experience, and Knowledge Among Nursing and Nursing Assistant Students.

Stigma is a public health concern. Stigmatizing attitudes toward persons with substance use disorders (SUDs) can adversely impact clinical care and outcomes. Beliefs about SUD, prior experience and familiarity to persons with SUD, and educational curricula drive attitudes among health-care workers. In 2019, nursing and nursing assistant students were recruited through an online survey platform. Participants completed an SUD knowledge test and a survey assessing education, beliefs, personal experience, and confidence in recognizing the signs and symptoms of SUD. One hundred and ten health-care students (nursing students, n = 67 and nursing assistant students, n = 43) completed the survey. Among nursing assistant students, endorsing a disease model of addiction (F(2, 40) = 5.83, p < .001, R2 = .23), and personal familiarity with SUD (F(2, 40) = 4.46, p < .001, R2 = .18), were significantly positively predictive of positive regard toward working with persons with SUD. For nursing students, endorsing a disease model of addiction, educational curricula involving persons with SUD, and personal familiarity were significantly positively predictive of positive regard toward working with persons with SUDs (F(2, 61) = 11.52, p < .001, R2 = .36). Interventions to mitigate drug-related stigma among health-care students should center students with personal familiarity, promote the disease concept of addiction, and incorporate contact-based training.

A cluster-randomized trial of a brief multi-component intervention to improve tobacco outcomes in substance use treatment.

BACKGROUND: Smoking prevalence is high among people in substance use disorder (SUD) treatment, and program interventions to address smoking are often complex and lengthy. This cluster-randomized trial tested whether a brief multi-component intervention impacted tobacco outcomes among staff and clients. METHODS: Seven SUD treatment programs were randomly assigned to the multi-component intervention or to waitlist control. The 6-month intervention included a leadership motivation assessment, program incentives, 4 staff training sessions and a leadership learning community session. Survey data were collected from staff and clients at pre- and post-intervention. Outcomes were first compared across condition (intervention vs waitlist control), and then examined pre- to post-intervention with condition collapsed. RESULTS: Staff in the intervention (n = 48) and control conditions (n = 26) did not differ at post-intervention on smoking prevalence, self-efficacy to help clients quit, or practices used to help clients quit smoking. Intervention clients (n = 113) did not differ from controls (n = 61) in smoking prevalence or receipt of tobacco services. Pre-post comparisons collapsed across condition showed a decrease in client and staff smoking prevalence, which could not be attributed to the intervention, and a decrease in client receipt of cessation medication. CONCLUSION: The brief multi-component intervention did not support changes in smoking prevalence or in tobacco-related services received by clients. Other intervention features are needed to reduce smoking among SUD clients. TRIAL REGISTRATION: Randomization occurred at the program level and outcomes measured are program-level measures. Accordingly, the trial is not registered.

Lifetime use of non-nicotine drugs in electronic cigarette devices among a sample of individuals in substance use disorder treatment.

Background: Limited data are available on other substance use in e-cigarettes (OSUE). The aim of this research was to determine the prevalence and predictors of OSUE among a sample of individuals in substance use disorder (SUD) treatment. Methods: In 2019, we surveyed 553 individuals from 18 residential SUD treatment programs in California, USA. Individuals reporting any lifetime use of an e-cigarette containing nicotine (n = 279) were asked about ever use of drugs other than nicotine in their e-cigarette. Those who reported use of non-nicotine drugs in their e-cigarette also reported what psychoactive drugs were used. Results: Among all the participants, 25 % (n = 139) . reported ever engaging in OSUE. The most common drugs used in vaping devices were marijuana/THC/hash, (70.5 %, n = 98) and amphetamines/methamphetamine (51.1 %, n = 71). Among those who had engaged in OSUE, 44.6 % (n = 62) had vaped drugs for which they sought treatment. Older persons (OR = 0.93, CI 0.91, 0.95) and African Americans (OR = 0.48, CI 0.24, 0.94) were less likely to have ever engaged in OSUE, while persons in treatment for opioid use were more likely (OR = 1.71, CI 1.08, 2.71). Conclusion: Among a sample of clients in SUD treatment, about 25% had ever engaged in OSUE, with THC/marijuana and amphetamines most commonly reported. Further research is needed to evaluate the OSUE to understand the reasons for use and implications among persons enrolled in SUD treatment.

Pre-implementation Assessment of Tobacco Cessation Interventions in Substance Use Disorder Residential Programs in California.

BACKGROUND: Across the United States, substance use disorder (SUD) treatment programs vary in terms of tobacco-related policies and cessation services offered. Implementation of tobacco-related policies within this setting can face several barriers. Little is known about how program leadership anticipate such barriers at the pre-implementation phase. This study used the Consolidated Framework for Implementation Research (CFIR) during the pre-implementation stage to identify factors that may influence the implementation stage of tobacco-related cessation policies and services in residential SUD programs. METHODS: We conducted semi-structured qualitative interviews with sixteen residential treatment program directors in California. The analysis was guided by a deductive approach using CFIR domains and constructs to develop codes and identify themes. ATLAS.ti software was used to facilitate thematic analysis of interview transcripts. FINDINGS: Themes that arose as anticipated facilitators for implementation included the relative advantage of the intervention vs. current practice, external policies/incentives to support tobacco-related policy, program directors' strong commitment and high self-efficacy to incorporate cessation into SUD treatment, and recognizing the importance of planning and engaging opinion leaders. Potential barriers included the SUD recovery culture, low stakeholder engagement, organizational culture, lack of workforce expertise, and lack of reimbursement for smoking cessation services. CONCLUSION: To support successful implementation of tobacco-related organizational change interventions, staff and clients of residential SUD programs require extensive education about the effectiveness of evidence-based medications and behavioral therapies for treating tobacco dependence. Publicly funded SUD treatment programs should receive support to address tobacco dependence among their clients through expanded reimbursement for tobacco cessation services.

Formal Hepatitis C Education Increases Willingness to Receive Therapy in an On-site Shelter-Based HCV Model of Care in Persons Experiencing Homelessness.

Background: The objective of this study was to evaluate the effectiveness of formal hepatitis C virus (HCV) education on engagement in therapy in persons experiencing homelessness in an on-site shelter-based model of care. As policies to eliminate Medicaid access restrictions to HCV treatment are expanded, patient education is paramount to achieving HCV elimination targets in difficult-to-engage populations including persons experiencing homelessness. Methods: This prospective study was conducted at 4 shelters in San Francisco and Minneapolis from August 2018 to January 2021. Of the 162 HCV Ab-positive participants, 150 participated in a 30-minute HCV education session. Posteducation changes in knowledge, beliefs, barriers to care, and willingness to accept therapy scores were assessed. Results: Following education, knowledge scores (mean change, 4.4 ±â€…4.4; P < .001) and willingness to accept therapy (70% to 86%; P = .0002) increased. Perceived barriers to HCV care decreased (mean change, -0.8 ±â€…5.2; P = .001). Higher baseline knowledge was associated with lesser gain in knowledge following education (coef., -0.7; P < .001). Posteducation knowledge (odds ratio, 1.2; P = .008) was associated with willingness to accept therapy. Conclusions: An HCV educational intervention successfully increased willingness to engage in HCV therapy in persons experiencing homelessness in an on-site shelter-based HCV model of care.

Cost of Hepatitis C care facilitation for HIV/Hepatitis C Co-infected people who use drugs.

BACKGROUND: Using data from a randomized trial, we evaluated the cost of HCV care facilitation that supports moving along the continuum of care for HIV/HCV co-infected individuals with substance use disorder. METHODS: Participants were HIV patients residing in the community, initially recruited from eight US hospital sites. They received HCV care facilitation (n = 51) or treatment as usual (n = 62) for up to six months. We used micro-costing methods to evaluate costs from the healthcare sector and patient perspectives in 2017 USD. We conducted sensitivity analyses varying care facilitator caseloads and examined offsetting savings using participant self-reported healthcare utilization. RESULTS: The average site start-up cost was $6320 (site range: $4320-$7000), primarily consisting of training. The mean weekly cost per participant was $20 (site range: $4-$30) for care facilitation visits and contacts, $360 (site range: $130- $700) for supervision and client outreach, and $70 (site range: $20-$180) for overhead. In sensitivity analyses applying a weekly caseload of 10 participants per care facilitator (versus 1-6 observed in the trial), the total mean weekly care facilitation cost from the healthcare sector perspective decreased to $110. Weekly participant time and travel costs averaged $7. There were no significant differences in other healthcare service costs between participants in the intervention and control arms. CONCLUSION: Weekly HCV care facilitation costs were approximately $450 per participant, but approximately $110 at a real-world setting maximum caseload of 10 participants per week. No healthcare cost offsets were identified during the trial period, although future savings might result from successful HCV treatment.

Shelter-Based Integrated Model Is Effective in Scaling Up Hepatitis C Testing and Treatment in Persons Experiencing Homelessness.

Hepatitis C virus (HCV) prevalence is high among people experiencing homelessness, but barriers to scaling up HCV testing and treatment persist. We aimed to implement onsite HCV testing and education and evaluate the effectiveness of low-barrier linkage to HCV therapy among individuals accessing homeless shelters. HCV rapid testing was performed at four large shelters in San Francisco (SF) and Minneapolis (MN). Sociodemographic status, HCV risk, barriers to testing, and interest in therapy were captured. Participants received information about HCV. Those testing positive underwent formal HCV education and onsite therapy. Multivariable modeling assessed predictors of receipt of HCV therapy and sustained virologic response (SVR). A total of 766 clients were tested. Median age was 53.7 years, 68.2% were male participants, 46.3% were Black, 27.5% were White, 13.2% were Hispanic, and 57.7% had high school education or less; 162 (21.1%) were HCV antibody positive, 107 (66.0%) had detectable HCV RNA (82.1% with active drug use, 53.8% history of psychiatric illness), 66 (61.7%) received HCV therapy, and 81.8% achieved SVR. On multivariate analysis, shelter location (MN vs. SF, odds ratio [OR], 0.3; P = 0.01) and having a health care provider (OR, 4.1; P = 0.02) were associated with receipt of therapy. On intention to treat analysis, the only predictor of SVR when adjusted for age, sex, and race was HCV medication adherence (OR, 14.5; P = 0.01). Conclusion: Leveraging existing homeless shelter infrastructure was successful in enhancing HCV testing and treatment uptake. Despite high rates of active substance use, psychiatric illness, and suboptimal adherence, over 80% achieved HCV cure. This highlights the critical importance of integrated models in HCV elimination efforts in people experiencing homelessness that can be applied to other shelter settings.

COVID-19 vaccine trust among clients in a sample of California residential substance use treatment programs.

BACKGROUND: Individuals with a substance use disorder (SUD) are at a significantly higher risk for coronavirus disease-19 (COVID-19) and have higher rates of COVID-19 related hospitalization and death than those without SUD. This study assessed COVID-19 vaccine trust, transmission awareness, risk and protective behaviors, and effects of COVID-19 on mental health and smoking among a sample of clients in California residential SUD treatment programs and identified factors associated with vaccine trust. METHODS: A multi-site sample of SUD treatment clients (n = 265) completed a cross-sectional survey. Multivariable logistic regression was used to identify factors associated with COVID-19 vaccine trust. RESULTS: Participants were predominantly male (82.3 %) and racially/ethnically diverse (33.3 % Non-Hispanic White). Most participants were aware of COVID-19 modes of transmission, however, only 39.5 % trusted a COVID-19 vaccine would be safe and effective. Factors independently associated with trust in a COVID-19 vaccine included age (AOR = 1.03, 95 % CI = 1.02, 1.05, p = 0.0001) and wearing a mask all the time (AOR = 2.48, 95 % CI = 1.86, 3.31, p = 0.0001). African Americans were less likely than White participants to trust that a COVID-19 vaccine is safe and effective (AOR = 0.41, 95 % CI = 0.23, 0.70, p = 0.001). CONCLUSION: SUD treatment clients were aware of COVID-19 modes of transmission; however, fewer than half trusted that a COVID-19 vaccine would be safe and effective. Health communication about COVID-19 for people with SUD should use a multipronged approach to address COVID-19 vaccine mistrust and transmission risk behaviors.

Correlates of e-cigarette use for smoking cessation among clients in residential substance use disorder treatment.

Little is known about e-cigarette use among persons in substance use disorder (SUD) treatment, or their use of e-cigarettes for smoking cessation. Prevalence of e-cigarette use and correlates of e-cigarette use for smoking cessation were examined among clients in SUD treatment. Participants (n = 332) were current cigarette smokers recruited from 20 residential SUD programs in California. We used multivariable logistic regression to identify correlates of using e-cigarettes for quitting smoking. Almost half (45.2%) of the sample had ever used e-cigarettes for smoking cessation, and 34% had used e-cigarettes in the past 30 days. Smokers who had used e-cigarettes for smoking cessation, compared to those who had not, were younger (adjusted odds ratio [AOR] = 0.94, 95% confidence interval [CI] = 0.91, 0.96), had more than a high school education (AOR = 1.69, 95% CI = 1.07, 2.68), sought treatment for both SUD and mental health disorder (AOR = 2.62, 95% CI = 1.38, 5.00), wanted help quitting smoking (AOR = 1.90, 95% CI = 1.03, 3.50) and perceived e-cigarettes as equally harmful (AOR = 3.03, 95% CI = 1.10, 8.33) or less harmful than tobacco cigarettes (AOR = 2.82, 95% CI = 1.02, 7.77). Black/African American and Hispanic/Latino participants were less likely to use e-cigarettes for smoking cessation than participants who identify as White. E-cigarettes were favorably perceived by clients in residential SUD treatment as a quit smoking aid. Treatment programs should consider how to advise clients with respect to the use of e-cigarettes for smoking cessation.

Clients' perceptions of barriers and facilitators to implementing hepatitis C virus care in homeless shelters.

BACKGROUND: Hepatitis C virus (HCV) is highly prevalent among homeless persons, yet barriers continue to impede HCV testing and treatment in this population. We studied the experiences of homeless individuals related to accessing HCV care to inform the design of a shelter-based HCV prevention and treatment program. METHODS: Homeless shelter clients (10 women and 10 men) of a large shelter in San Francisco participated in gender segregated focus groups. Focus groups followed a semi-structured interview format, which assessed individual, program/system, and societal-level barriers and facilitators to universal HCV testing and linkage to HCV care. Focus group interviews were transcribed, coded, and analyzed using thematic analysis. RESULTS: We identified key barriers to HCV testing and treatment at the individual level (limited knowledge and misconceptions about HCV infection, mistrust of health care providers, co-morbid conditions of substance use, psychiatric and chronic medical conditions), system level (limited advocacy for HCV services by shelter staff), and social level (stigma of homelessness). Individual, system, and social facilitators to HCV care described by participants included internal motivation, financial incentives, prior experiences with rapid HCV testing, and availability of affordable direct acting antiviral (DAA) treatment, respectively. CONCLUSIONS: Interrelated individual- and social-level factors were the predominant barriers affecting homeless persons' decisions to engage in HCV prevention and treatment. Integrated models of care for homeless persons at risk for or living with HCV address many of these factors, and should include interventions to improve patient knowledge of HCV and the availability of effective treatments.

Recommendations for Implementing Hepatitis C Virus Care in Homeless Shelters: The Stakeholder Perspective.

Compared with the general population, homeless individuals are at higher risk of hepatitis C infection (HCV) and may face unique barriers in receipt of HCV care. This study sought the perspectives of key stakeholders toward establishing a universal HCV screening, testing, and treatment protocol for individuals accessing homeless shelters. Four focus groups were conducted with homeless shelter staff, practice providers, and social service outreach workers (n = 27) in San Francisco, California, and Minneapolis, Minnesota. Focus groups evaluated key societal, system, and individual-level facilitators and barriers to HCV testing and management. Interviews were transcribed and analyzed thematically. The societal-level barriers identified were lack of insurance, high-out-of-pocket expenses, restriction of access to HCV treatment due to active drug and/or alcohol use, and excessive paperwork required for HCV treatment authorization from payers. System-level barriers included workforce constraints and limited health care infrastructure, HCV stigma, low knowledge of HCV treatment, and existing shelter policies. At the individual level, client barriers included competing priorities, behavioral health concerns, and health attitudes. Facilitators at the system level for HCV care service integration in the shelter setting included high acceptability and buy in, and linkage with social service providers. Conclusion: Despite societal, system, and individual-level barriers identified with respect to the scale-up of HCV services in homeless shelters, there was broad support from key stakeholders for increasing capacity for the provision of HCV services in shelter settings. Recommendations for the scale-up of HCV services in homeless shelter settings are discussed.

Health-related internet use among opioid treatment patients.

The Internet and smartphones have become commonplace and can be effective in overcoming traditional barriers to accessing health information about substance use disorders (SUD), and their prevention or treatment. Little is known, however, about specific factors that may influence the use of these technologies among socioeconomically disadvantaged populations with SUDs. This study characterized the use of digital technologies and the Internet among individuals receiving treatment for opioid use disorder, focusing on identifying predictors of Internet use for health-related purposes. Participants came from an urban opioid replacement therapy program and completed a face-to-face survey on Internet and technology use. We examined the association between online health information seeking and technology acceptance variables, including perceived usefulness, effort expectancy, social influence, and facilitating conditions (e.g., availability of devices/services and technical support). Participants (N = 178, ages 18-64) endorsed high rates of current smartphone ownership (94%) and everyday Internet use (67%). 88% of participants reported searching online for information about health or medical topics in the past 3 months. Predictors of Internet use for health-related purposes were higher technology acceptance for mobile Internet use, younger age, current employment, and less bodily pain. Our results demonstrate high acceptance and use of mobile technology and the Internet among this sample of socioeconomically disadvantaged individuals with SUDs. However, these findings also highlight the importance of identifying barriers that disadvantaged groups face in using mobile technologies when designing technology-based interventions for this population.

Cost-effectiveness of hepatitis C screening and treatment linkage intervention in US methadone maintenance treatment programs.

BACKGROUND: We evaluated the cost-effectiveness of a hepatitis C (HCV) screening and active linkage to care intervention in US methadone maintenance treatment (MMT) patients using data from a randomized trial conducted in New York City and San Francisco. METHODS: We used a decision analytic model to compare 1) no intervention; 2) HCV screening and education (control); and 3) HCV screening, education, and care coordination (active linkage intervention). We also explored an alternative strategy wherein HCV/HIV co-infected participants linked elsewhere. Trial data include population characteristics (67% male, mean age 48, 58% HCV infected) and linkage rates. Data from published sources include treatment efficacy and HCV re-infection risk. We projected quality-adjusted life years (QALYs) and lifetime medical costs using an established model of HCV (HEP-CE). Incremental cost-effectiveness ratios (ICERs) are in 2015 US$/QALY discounted 3% annually. RESULTS: The control strategy resulted in a projected 35% linking to care within 6 months and 31% achieving sustained virologic response (SVR). The intervention resulted in 60% linking and 54% achieving SVR with an ICER of $24,600/QALY compared to no intervention from the healthcare sector perspective and was a more efficient use of resources than the control strategy. The intervention had an ICER of $76,500/QALY compared to the alternative strategy. From a societal perspective, the intervention had a net monetary benefit of $511,000-$975,600. CONCLUSIONS: HCV care coordination interventions that include screening, education and active linkage to care in MMT settings are likely cost-effective at a conventional $100,000/QALY threshold for both HCV mono-infected and HIV co-infected patients.

Structural factors affecting Asians and Pacific Islanders in community-based substance use treatment: Treatment provider perspectives.

Asians and Pacific Islanders (API) have large disparities in utilization of substance use treatment compared to other racial groups. In this study, we analyzed factors that shape API experiences accessing and engaging in community-based treatment from the perspective of treatment providers. We conducted semi-structured interviews with 40 treatment providers who work with API clients in treatment programs in San Francisco and Los Angeles. We analyzed the transcribed interview data in ATLAS.ti using a content analysis approach. There were three main findings. First, treatment providers found the API category itself is too broad and heterogeneous to meaningfully explain substance use patterns. Second, beyond race/ethnicity, structural factors such as poverty, neighborhood, housing, and age had an impact on API substance use. Third, factors such as family, immigration status, religion, language, stigma played complex roles in API treatment experiences, contingent on how client, programs, and providers attended to differences in these categories.

Perceived discrimination among racial and ethnic minority drug users and the association with health care utilization.

People who use drugs (PWUDs) are at increased risk for several medical conditions, yet they delay seeking medical care and utilize emergency departments (EDs) as their primary source of care. Limited research regarding perceived discrimination and PWUDs' use of health care services exists. This study explores the association between interpersonal and institutional racial/ethnic and drug use discrimination in health care settings and health care utilization among respondents (N = 192) recruited from methadone maintenance treatment programs (36%), HIV primary care clinics (35%), and syringe exchange programs (29%) in New York City (n = 88) and San Francisco (n = 104). The Kaiser Family Foundation Survey of Race, Ethnicity, and Medical Care questionnaire was utilized to assess perceived institutional racial/ethnic and drug use discrimination. Perceived institutional discrimination was examined across race/ethnicity and by regular use of ERs, having a regular doctor, and consistent health insurance. Perceived interpersonal discrimination was examined by race/ethnicity. Perceived interpersonal drug use discrimination was the most common type of discrimination experienced in health care settings. Perceptions of institutional discrimination related to race/ethnicity and drug use among non-Hispanic Whites did not significantly differ from those among non-Hispanic Blacks or Hispanics. A perception of less frequent institutional racial/ethnic and drug use discrimination in health care settings was associated with increased odds of having a regular doctor. Awareness of perceived interpersonal and institutional discrimination in certain populations and the effect on health care service utilization should inform future intervention development to help reduce discrimination and improve health care utilization among PWUDs.

Hepatitis C Screening Rate Among Underserved Adults With Serious Mental Illness Receiving Care in California Community Mental Health Centers.

Although HCV is more prevalent among people with severe mental illness (SMI; e.g., schizophrenia, bipolar disorder) than in the general population (17% vs 1%), no large previous studies have examined HCV screening in this population. In this cross-sectional study, we examined administrative data for 57 170 California Medicaid enrollees with SMI to identify prevalence and predictors of HCV screening from October 2010 through September 2011. Only 4.7% (2674 of 57 170) received HCV screening, with strongest predictors being nonpsychiatric health care utilization and comorbid substance abuse.

An international perspective on using opioid substitution treatment to improve hepatitis C prevention and care for people who inject drugs: Structural barriers and public health potential.

People who inject drugs (PWID) are central to the hepatitis C virus (HCV) epidemic. Opioid substitution treatment (OST) of opioid dependence has the potential to play a significant role in the public health response to HCV by serving as an HCV prevention intervention, by treating non-injection opioid dependent people who might otherwise transition to non-sterile drug injection, and by serving as a platform to engage HCV infected PWID in the HCV care continuum and link them to HCV treatment. This paper examines programmatic, structural and policy considerations for using OST as a platform to improve the HCV prevention and care continuum in 3 countries-the United States, Estonia and Viet Nam. In each country a range of interconnected factors affects the use OST as a component of HCV control. These factors include (1) that OST is not yet provided on the scale needed to adequately address illicit opioid dependence, (2) inconsistent use of OST as a platform for HCV services, (3) high costs of HCV treatment and health insurance policies that affect access to both OST and HCV treatment, and (4) the stigmatization of drug use. We see the following as important for controlling HCV transmission among PWID: (1) maintaining current HIV prevention efforts, (2) expanding efforts to reduce the stigmatization of drug use, (3) expanding use of OST as part of a coordinated public health approach to opioid dependence, HIV prevention, and HCV control efforts, (4) reductions in HCV treatment costs and expanded health system coverage to allow population level HCV treatment as prevention and OST as needed. The global expansion of OST and use of OST as a platform for HCV services should be feasible next steps in the public health response to the HCV epidemic, and is likely to be critical to efforts to eliminate or eradicate HCV.

Viral hepatitis among drug users in methadone maintenance: associated factors, vaccination outcomes, and interventions.

Drug users are at high risk of viral Hepatitis A, B, and C. The prevalence of Hepatitis A, Hepatitis B, and Hepatitis C, associated factors, and vaccine seroconversion among drug treatment program participants in a randomized controlled trial of hepatitis care coordination were examined. Of 489 participants, 44 and 47% required Hepatitis A/Hepatitis B vaccinations, respectively; 59% were Hepatitis C positive requiring linkage to care. Factors associated with serologic statuses, and vaccine seroconversion are reported; implications for strategies in drug treatment settings are discussed. Results suggest generalizable strategies for drug treatment programs to expand viral hepatitis screening, prevention, vaccination, and linkage to care.

Education and counseling in the methadone treatment setting improves knowledge of viral hepatitis.

The aim of this study was to evaluate the effectiveness of an educational method of providing viral hepatitis education for methadone maintenance patients. Four hundred forty participants were randomly assigned to either a control or a motivationally-enhanced viral hepatitis education and counseling intervention. Viral hepatitis A (HAV), B (HBV), and C (HCV) knowledge tests were administered at baseline, following each of two education sessions (post-education), and at a 3-month follow-up assessment. Results indicated a significant increase in knowledge of HAV, HBV, and HCV over time. No differences were found in knowledge between the intervention groups in knowledge acquisition regarding any of the hepatitis viruses suggesting that a motivational interviewing style may not augment hepatitis knowledge beyond standard counseling. A two-session viral hepatitis education intervention effectively promotes hepatitis knowledge and can be integrated in methadone treatment settings.

Effects of HCV seropositive status on buprenorphine pharmacokinetics in opioid-dependent individuals.

BACKGROUND AND OBJECTIVES: The purpose of this study was to examine the effect of hepatitis C virus (HCV) infection on buprenorphine pharmacokinetics in opioid-dependent, buprenorphine/naloxone-maintained adults. METHODS: A retrospective analysis of buprenorphine pharmacokinetics in HCV seropositive and seronegative buprenorphine/naloxone-maintained individuals (N = 49) was undertaken. RESULTS: Relative to HCV seronegative subjects, HCV seropositive subjects had higher buprenorphine exposure, as demonstrated by elevated buprenorphine AUC and Cmax values (p = .03 and .02, respectively) and corresponding elevations in the metabolites, buprenorphine-3-glucuronide AUC values (p = .03) and norbuprenorphine-3-glucuronide AUC and C24 values (p = .05 and .03, respectively). DISCUSSION AND CONCLUSIONS: HCV infection was associated with higher plasma concentrations of buprenorphine and buprenorphine metabolites. SCIENTIFIC SIGNIFICANCE AND FUTURE DIRECTIONS: Findings suggest the potential for opioid toxicity among HCV-infected patients treated with buprenorphine/naloxone, and possible hepatotoxic effects related to increased buprenorphine exposure. HCV-infected patients receiving buprenorphine may need lower doses to maintain therapeutic plasma concentrations.