A quantitative and qualitative evaluation of the British Columbia Take Home Naloxone program

Barriers to calling emergency services amongst people who use substances in the event of overdose: A scoping review

BACKGROUND

North America is grappling with an ongoing drug overdose crisis. While harm reduction measures like take-home naloxone kits, and supervised consumption sites, have helped reduce mortality, other strategies to address this public health emergency are required. Good Samaritan Laws (GSLs) offer legal protection for individuals who report overdoses, yet people who use substances (PWUS) may still hesitate to seek help due to concerns about existing legislation. This scoping review explores barriers preventing PWUS from calling emergency services for overdoses, along with potential solutions and facilitators to address this challenge.

METHODS

PRISMA-ScR was used as a guide to conduct this study. Health sciences librarians searched Medline, Embase, PsychINFO, CINAHL, and SCOPUS to identify relevant articles. Six reviewers contributed to screening and extracting the articles through Covidence. Two reviewers performed thematic analysis using NVivo software to identify key barriers and facilitators.

RESULTS

An initial search found 6275 articles for title and abstract screening, resulting in 48 studies meeting the inclusion criteria. The primary barrier to calling 911 pertained to concerns about police arrivng with other first responders, especially regarding their presence and involvement at the scene of overdose. This was followed by legal repercussions, including fear of arrest, incarceration, and fear of eviction, amongst others. Some studies noted the lack of knowledge or trust in GSLs as a deterrent to seeking medical assistance. Additional barriers included concerns about privacy and confidentiality, preference to manage an overdose alone/receive help from another peer, confidence in naloxone effectiveness, limited access to cell phones, peer pressure to not call for help, and identifying as Black, Indigenous, or a Person of Colour (BIPOC). Facilitators include increased GSL awareness among PWUS and law enforcement, expanded legal safeguards for 911 callers, reduced police intervention in overdose cases, and enhanced naloxone availability at key access points.

CONCLUSION

Despite the good intentions of GSLs, PWUS continue to experience significant barriers to calling emergency services in the event of an overdose. Understanding these barriers and key facilitators is necessary to inform future drug policy and advocacy efforts.

Evaluation of a large-scale health department naloxone distribution program: Per capita naloxone distribution and overdose morality

OBJECTIVES

To report per-capita distribution of take-home naloxone to lay bystanders and evaluate changes in opioid overdose mortality in the county over time.

METHODS

Hamilton County Public Health in southwestern Ohio led the program from Oct 2017-Dec 2019. Analyses included all cartons distributed within Hamilton County or in surrounding counties to people who reported a home address within Hamilton County. Per capita distribution was estimated using publicly available census data. Opioid overdose mortality was compared between the period before (Oct 2015-Sep 2017) and during (Oct 2017-Sep 2019) the program.

RESULTS

A total of 10,416 cartons were included for analyses, with a total per capita distribution of 1,275 cartons per 100,000 county residents (average annual rate of 588/100,000). Median monthly opioid overdose mortality in the two years before (28 persons, 95% CI 25-31) and during (26, 95% CI 23-28) the program did not differ significantly.

CONCLUSIONS

Massive and rapid naloxone distribution to lay bystanders is feasible. Even large-scale take-home naloxone distribution may not substantially reduce opioid overdose mortality rates.

Sweden's first Take-Home Naloxone program: participant characteristics, dose endpoints and predictors for overdose reversals

BACKGROUND

Opioid overdoses are a growing concern, particularly among people who inject drugs. Sweden, with a comparatively high proportion of drug-related mortality, introduced its first Take-Home Naloxone (THN) program in 2018, at the Stockholm needle and syringe program (NSP). In this study we compare THN participant characteristics regarding refills and overdose reversals as well as investigate predictors associated with number of reversals. We also investigate interventions performed in overdose situations and endpoints for naloxone doses.

METHODS

This was a prospective open inclusion cohort study conducted between January 24^th 2018 and March 31^st 2022 at the Stockholm NSP. Participants received THN, free of charge, after a training session and provided data regarding drug use and overdose experiences. During refill visits, participants reported if the naloxone was used for overdose reversal and, if so, responded to a ten-item questionnaire which included stating whether the naloxone recipient was the participant themselves or somebody else. Questionnaire data was combined with NSP database demographic data. Zero-inflated Poisson regression was applied to analyse predictors for number of reported overdose reversals.

RESULTS

Among study participants (n = 1,295), 66.5% stated opioids as their primary drug, and 61.4% and 81.0% had previous experience of a personal or witnessed overdose, respectively. Overall, 44.0% of participants reported a total of 1,625 overdose reversals and the victim was known to have survived in 95.6% of cases. Stimulant use (aIRR 1.26; 95% CI 1.01, 1.58), benzodiazepine use (aIRR 1.75; 95% CI 1.1, 2.78) and homelessness (aIRR 1.35; 95% CI 1.06, 1.73) were predictors associated with an increased number of reported overdose reversals. Mortality was higher among those who reported at least one overdose reversal (HR 3.4; 95% CI 2.2, 5.2).

CONCLUSIONS

An NSP's existent framework can be utilised to effectively implement a THN program, provide basic training and reach numerous high-risk individuals. During the four-year study, THN participants reversed a sizeable number of potentially fatal overdoses, of which many were reported by participants whose primary drug was not opioids. Naloxone refill rate was high, indicating that participants were motivated to maintain a supply of naloxone in case of future overdose events.

Expanding the accessibility of harm reduction services in the United States: Measuring the impact of an automated harm reduction dispensing machine

BACKGROUND

In 2021, approximately 107,622 Americans died from drug overdose in the United States. With overdose deaths rising rapidly, it is imperative that prevention efforts focus on expanding proven, evidence-based strategies to curb overdose death rates such as targeted naloxone distribution and syringe service programs (SSPs). The COVID-19 pandemic placed additional strain on SSPs, increasing the need for programs that minimize direct contact and potential COVID-19 exposure. The purpose of this study is to evaluate the impact of an automated harm reduction dispensing machine on the local accessibility of harm reduction services.

OBJECTIVES

The primary outcome of the study is the number of harm reduction supplies distributed to the community by the dispensing machine in its first year compared to the number of supplies distributed by the same organization in the previous year. Secondary outcomes include the countywide incidence of fatal drug overdose and human immunodeficiency virus (HIV) compared to previous years.

METHODS

The machine is located outside, in the same location as a once weekly, in-person SSP. Clients register with the program over the phone with a harm reduction coordinator. Each client is connected to products and services such as naloxone, sharps containers, safer injection/smoking kits, pregnancy tests, HIV tests, substance use disorder treatment, and more.

RESULTS

Since installation, 637 individuals registered with the program, 12% of whom had never reportedly used harm reduction services before. Within its first year of use, the machine dispensed 3360 naloxone doses and 10,155 fentanyl test strips, more than any other SSP in the county.

CONCLUSION

The implementation of an automated harm reduction dispensing machine led to an increased accessibility of harm reduction products and services and was associated with a lower countywide incidence of unintentional overdose death and HIV. The association with decreased overdose death and HIV incidence should be further investigated to assess causality.

Stigma by Association: To what Extent is the Attitude Toward Naloxone Affected by the Stigma of Opioid Use Disorder?

The United States opioid epidemic is fueled by illicit opioid abuse and prescription opioid misuse and abuse. Consequently, cases of opioid use disorder (OUD, opioid addiction), opioid overdose, and related deaths have increased since the year 2000. Naloxone is an opioid antagonist that rapidly reverses opioid intoxication to prevent death from overdose. It is one of the major risk mitigation strategies recommended in the 2016 Centers for Disease Control and Prevention Guideline for Prescribing Opioids for Chronic Pain. However, despite the exponential increase in dispensing and distribution of naloxone, opioid overdose and related deaths have continued to increase; suggesting that the increased naloxone supply still lags the need. This discordance is attributed at least in part to the negative attitude toward naloxone, which is based on the belief that naloxone is only meant for "addicts" and "abusers" (OUD patients). This negative attitude or so-called naloxone stigma is therefore considered a major barrier for naloxone distribution and consequently, overdose-death prevention efforts. This article presents evidence that challenges common assertions about OUD stigma being the sole and direct driving force behind naloxone stigma, and the purported magnitude of the barrier that naloxone stigma constitutes for naloxone distribution programs among the stakeholders (patients, pharmacists, and prescribers). The case was then made to operationalize and quantify the construct among the stakeholders to determine the extent to which OUD stigma drives naloxone stigma, and the relative impact of naloxone stigma as a barrier for naloxone distribution efforts.

Characteristics of and Experience Among People Who Use Take-Home Naloxone in Skåne County, Sweden

Background

Opioid overdose related injury or death can be prevented by bystander naloxone administration. For naloxone to be present when and where overdoses occur, opioid prevention education and naloxone distribution (OPEND) must be established on a broad level. This is the 30-month follow-up of the first multi-site naloxone project in Sweden, implemented at 31 sites in the County of Skåne 2018.

Aim

To address participant characteristics and factors associated with returning for naloxone refill and with having used naloxone for overdose reversal. An additional aim was to describe self-reported reasons for naloxone refill and overdose experiences.

Methods

Data were collected during June 2018-December 2020 through questionnaires at baseline and upon naloxone refill of the initial and subsequent naloxone kit. Descriptive statistics was used to address participant characteristics, those returning for naloxone refill and reporting overdose reversal. Chi-2 test was used for variable comparison between groups. Factors associated with overdose reversals were examined by logistic regression analysis. Reasons for naloxone refill, overdose situation and management were presented descriptively.

Results

Among 1,079 study participants, 22% (n = 235) returned for naloxone refill, of which 60% (n = 140) reported a total of 229 overdose reversals. Reversals were more likely to be reported by participants trained at needle exchange programs (NEPs) [adjusted odds ratio (AOR) = 5.18, 95% Confidence interval (CI) = 3.38-7.95)], with previous experience of own (AOR = 1.63, 95% CI = 1.03-2.58) or witnessed (AOR = 2.12, 95% CI = 1.05-4.29) overdose, or who had used sedatives during the last 30 days before initial training (AOR = 1.56, 95% CI = 1.04-2.33). A majority of overdoses reportedly occurred in private settings (62%), where the victim was a friend (35%) or acquaintance (31%) of the rescuer.

Conclusion

Participants with own risk factors associated with overdose (e.g., injection use, concomitant use of benzodiazepines and previous experience of own overdose) were more likely to report administering naloxone for overdose reversal. Overdose management knowledge was high. The findings indicate that implementation of multi-site OPEND reaches individuals at particularly high risk of own overdose in settings with limited previous harm reduction strategies and favors a further scaling up of naloxone programs in similar settings.

How do naloxone-based interventions work to reduce overdose deaths: a realist review

BACKGROUND

Naloxone-based interventions as part of health systems can reverse an opioid overdose. Previous systematic reviews have identified the effectiveness of naloxone; however, the role of context and mechanisms for its use has not been explored. This realist systematic review aims to identify a theory of how naloxone works based on the contexts and mechanisms that contribute to the success of the intervention for improved outcomes.

METHODS

Pre-registered at PROSPERO, this realist review followed RAMESES standards of reporting. Keywords included 'naloxone' and ' opioid overdose'. All study designs were included. Data extraction using 55 relevant outputs based on realist logic produced evidence of two middle-range theories: Naloxone Bystander Intervention Theory and Skills Transfer Theory.

RESULTS

Harm reduction and/or low threshold contexts provide a non-judgemental approach which support in-group norms of helping and empower the social identity of the trained and untrained bystander. This context also creates the conditions necessary for skills transfer and diffusion of the intervention into social networks. Stigma and negative attitudes held by first responders and stakeholders involved in the implementation process, such as police or GPs, can prohibit the bystander response by inducing fear in responding. This interferes with skills transfer, naloxone use and carriage of naloxone kits.

CONCLUSIONS

The findings provide theoretically informed guidance regarding the harm reduction contexts that are essential for the successful implementation of naloxone-based interventions. Peer-to-peer models of training are helpful as it reinforces social identity and successful skills transfer between bystanders. Health systems may want to assess the prevalence of, and take steps to reduce opioid-related stigma with key stakeholders in contexts using a low threshold training approach to build an environment  to support positive naloxone outcomes.

TRIAL REGISTRATION

PROSPERO 2019 CRD42019141003.

Perspectives of Stakeholders of Equitable Access to Community Naloxone Programs: A Literature Review

The purpose of this review is to examine the existing literature about facilitators and barriers influencing equitable access to naloxone programs by individuals who use opioids. A total of 49 published articles were examined, which generated four overarching themes:(1) Stigma as a barrier to access; (2) Lack of a wide range of stakeholder perspectives; (3) Need for a comprehensive understanding of factors affecting equitable access to naloxone programs; (4) Facilitators to increase the access of community naloxone programs. Our review highlighted the importance of advocacy in practice, education, administration, and policy to address the health inequities that exist in naloxone distribution programs. Advocacy activities involve the need for health care professionals to engage in social justice practice through evidence-based informed research about the facts of opioid use; challenging the stigma toward victim-blaming against naloxone users; as well as promoting program development and health policy to bring about equitable access to naloxone programs by marginalized and socially disadvantaged populations.

More than saving lives: Qualitative findings of the UNODC/WHO Stop Overdose Safely (S-O-S) project

BACKGROUND

The Stop Overdose Safely (S-O-S) initiative-developed in compliance with WHO guidelines-aims to prevent opioid overdose deaths. Under the umbrella of this initiative a multi-country project was implemented in Kazakhstan, Kyrgyzstan, Tajikistan, and Ukraine, that involved overdose recognition and response training, including the provision of take-home naloxone (THN). More than 14,000 potential overdose witnesses were trained and more than 16,000 THN kits were distributed across the participating countries. This paper reports on the qualitative component of an evaluation aiming to understand the views and experiences of S-O-S project participants.

METHODS

Data were drawn from focus group discussions with 257 project participants from across all four countries, including people who use and inject drugs, and others likely to witness an opioid overdose. Data were analysed thematically.

RESULTS

Findings revealed how past experiences of trauma and loss related to overdose death were common, as was appreciation and gratitude for the opportunity to participate in the S-O-S training. Participants described how they shared knowledge and skills with others. Empowerment and destigmatising narratives featured prominently, and highlighted how for people who use drugs, feeling valued and cared about-not only by families and friends, but by health care providers, and sometimes police-was a positive outcome of their participation. Nevertheless, findings also revealed how real experiences of fear regarding police intervention was a barrier to carrying naloxone and intervening when faced with an overdose situation.

CONCLUSION

Our analysis found that the S-O-S project produced positive outcomes that go well beyond saving lives. Despite identifying barriers to THN uptake, our findings support a growing body of evidence that broad access to THN as part of a continuum of care can enhance the health and wellbeing of people who use drugs and their communities, in low- to middle-income countries.

Benefits and barriers associated with take-home-naloxone in the view of Italian service providers

Purpose

Spanning almost 30 years, Italy’s experience with take-home-naloxone (THN) provides an interesting case study on the international scene because of its specific history, regulation and trends in overdose (OD) rates. Accordingly, this study aims to contribute to the evidence base for THN and its delivery in a different setting.

Design/methodology/approach

The study focuses on service providers’ perceptions of the benefits, risks and barriers associated with THN provision. Data was collected using a mixed-methods approach as follows: an online structured questionnaire (no. of respondents = 63) and two focus groups (no. of total participants = 18).

Findings

Findings show that service providers believe the benefits of THN far outweigh the risks and accrue to services, as well as users. The study also suggests that the barriers in Italy are mostly ideological and political, and illustrates how resistance to administering THN can re-emerge when ODs are no longer a social emergency. Furthermore, the study found that health and social workers have different attitudes which are also reflected at the level of public and private services, thereby shaping slightly different models of THN supply.

Originality/value

The study suggests that barriers associated to THN are more ideological and political rather than concrete, which explains why, even where it seems long established, can easily re-emerge once ODs are no longer a social emergency.

Multi-informant Implementation and Intervention Outcomes of Opioid Overdose Education and Naloxone Distribution in New York City

Overdose Education and Naloxone Distribution (OEND) is an effective public health intervention to reduce opioid overdose fatalities (McDonald and Strang, Addiction 111:1177-1187, 2016). However, we know little about OEND implementation outcomes (i.e., indicators of implementation success), specifically the fidelity of training delivery, and how these may relate to intervention outcomes (i.e., indicators of the success or effectiveness of an intervention), such as overdose knowledge and attitudes. This study evaluated 16 OEND trainings conducted at different Opioid Overdose Prevention Programs in New York City. Trainees (N = 75) completed the Opioid Overdose Knowledge and Attitude Scales before and after training (intervention outcomes). Implementation outcomes were fidelity (competence and adherence of the trainer, N = 10; modified Fidelity Checklist) and acceptability of OEND (Acceptability of Intervention Measure), assessed from multiple perspectives (trainees, trainers, and an independent observer). Trainees' overdose knowledge, t(71) = - 8.12, p < 0.001, 95% CI [- 6.54, - 3.96], and attitudes, t(65) = - 6.85, p < 0.001, 95% CI [- 0.59, - 0.33], improved significantly from pre- to post-training. Stepwise multiple regression models indicated that adherence of the trainer rated from the observer perspective added significantly to the prediction of changes in overdose knowledge, F(1, 67) = 9.81, p = 0.003, and explained 13% of the variance in outcome. However, fidelity measures from the perspective of trainees or trainers and acceptability of OEND were not associated with changes in trainees' overdose knowledge or attitudes. OEND implementation outcomes and their relationship with intervention outcomes differed depending on the role of the fidelity rater in relation to the intervention. Specifically, our findings indicate that fidelity should be measured from an independent perspective (i.e., an individual who is experienced with fidelity rating but not directly involved in the intervention).

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s43477-021-00021-4.

Emotional reactions of trained overdose responders who use opioids following intervention in an overdose event

Background: Our aim was to explore emotional reactions to intervening in an overdose event from the perspective of individuals who use opioids (peer responders). In addition, we were interested in the impact this experience may have on peer responders' feelings about helping in an overdose situation in the future. Methods: For this qualitative sub-study of a randomized controlled trial (RCT), data from 61 interviews were analyzed thematically using an inductive approach. Results: Peer responders had diverse emotional reactions to the overdose event. These ranged from a sense of pride and other positive feelings associated with their ability to help to ambivalence about being involved in situations perceived as challenging and burdensome. There were few reports of the overdose event as an exclusively negative experience. Many peer responders perceived it as their duty to use naloxone again if required. However, some had ambivalent feelings toward this responsibility, which may be related to negative experiences with previous intervention efforts. Conclusions: The capacity of people who use opioids to help reduce the harms associated with opioid overdose is experienced as empowering by some. Nonetheless, engaging peer responders in strategies to reduce opioid-related mortality should be coupled with appropriate resources to process their experiences and emotional responses.

The implementation and role of a staff naloxone program for non-profit community-based sites in British Columbia: A descriptive study

INTRODUCTION

The BC Centre for Disease Control implemented the Facility Overdose Response Box (FORB) program December 1st, 2016 to train and support non-healthcare service providers who may respond to an overdose in the workplace. The program aims to support staff at non-profit community-based organizations by ensuring policy development, training, practice overdose response exercises, and post-overdose debriefing opportunities are established and implemented.

MATERIALS AND METHODS

Three data sources were used in this descriptive cross-sectional study: FORB site registration data; naloxone administration forms; and a survey that was distributed to FORB sites in February 2019. FORB program site and naloxone administration data from December 1st, 2016 to December 31st, 2019 were analyzed using descriptive statistics. A Cochran-Armitage test was used to assess trends over time in naloxone administration event characteristics. Site coordinator survey results are reported to supplement findings from administrative data.

RESULTS

As of December 31st, 2019, FORB was implemented at 613 sites across BC and 1,758 naloxone administration events were reported. The majority (86.3%, n = 1,517) were indicated as overdose reversals. At registration, 43.6% of sites provided housing services, 26.3% offered harm reduction supplies, and 18.6% provided Take Home Naloxone. Refusal to be transported to hospital following overdose events when emergency services were called showed an increasing trend over time. Most respondents (81.3%) reported feeling confident in their ability to respond to the overdose and 59.6% were offered staff debrief. Based on the 89 site survey responses, supports most commonly made available following an overdose were debrief with a fellow staff member (91.0%), debrief with a supervisor (89.9%), and/or counselling services (84.3%).

CONCLUSIONS

The uptake of the FORB program has contributed to hundreds of overdose reversals in community settings in BC. Findings suggest that the FORB program supports developing staff preparedness and confidence in overdose response in community-based settings.

Addiction stigma and the production of impediments to take-home naloxone uptake

Opioid overdose deaths are a major health issue in Australia and around the world. Programmes to provide opioid consumers with 'take-home' naloxone to reverse overdose exist internationally, but uptake by mainstream health services and consumers remains inconsistent. Researchers have identified a range of important educational, training and logistical impediments to take-home naloxone uptake and distribution, yet they have focused less on the social dynamics that can enhance or limit access, such as stigma. In this article, we also explore impediments to uptake, drawing on qualitative interview data gathered for an Australian research project on take-home naloxone. Mobilising a performative approach to stigma, we argue that overdose and prevention are shaped by the social dynamics of stigma and, as such, responsibility for dealing with overdose, as with take-home naloxone, should also be considered social (i.e. shared among peers, the public, communities and governments). Our interview data illuminate the various ways in which addiction stigma limits the possibilities and capacities of take-home naloxone and overdose prevention. First, we focus on how stigma may impede professional information provision about take-home naloxone by limiting the extent to which it is presented as a matter of interest for all opioid consumers, not just those who consume opioids illicitly. Second, we explore how stigma may limit the scale-up and expansion of programmes and access points. From here, we focus on how stigma co-constitutes the politics of overdose and prevention, rendering take-home naloxone ill-suited to many social settings of overdose. In closing, we point out that stigma is not just a post hoc impediment to access to and use of take-home naloxone but is central to opioid overdose production itself, and to effective prevention. While take-home naloxone is an excellent life-saving initiative, uncritically valorising it may divert attention from broader goals, such as the de-stigmatisation of drug consumption through decriminalisation, and other ambitious attempts to reduce overdose.

Known fentanyl use among clients of harm reduction sites in British Columbia, Canada

BACKGROUND

North America is in the midst of an opioid overdose epidemic and it is commonly suggested that exposure to fentanyl is unknown. Using a provincial survey of harm reduction site clients, we aimed to characterize known and unknown fentanyl use and their correlates among people who use drugs in British Columbia, Canada.

METHODS

We recruited 486 clients who were >18 years old and 316 agreed to provide a urine sample for substance use testing. Reported known fentanyl use was defined as a three-level categorical variable assessing recent (i.e., in the previous three days) fentanyl exposure: (i) known exposure; (ii) unknown exposure; and (iii) no exposure. We also assessed any exposure to fentanyl (Yes vs. No) confirmed by urinalysis. Survey data were summarized using descriptive statistics. Multinomial logistic regression and modified Poisson regression models were built to examine different correlates of exposure to fentanyl.

RESULTS

Median age of the participants was 40 (IQR: 32-49). Out of the 303 eligible participants, 38.7% (117) reported known fentanyl use, 21.7% (66) had unknown fentanyl use, and 39.6% (120) had no recent fentanyl use. In the adjusted multinomial logistic regression model and in comparison with unknown fentanyl use, recent known fentanyl use was significantly associated with self-report of methadone use (aRRR = 3.18), heroin/morphine use (aRRR = 4.40), and crystal meth use (aRRR = 2.95). Moreover, any recent exposure to fentanyl (i.e., positive urine test for fentanyl) was significantly associated with living in urban settings (aPR = 1.49), and self-reporting recent cannabis use (aPR = 0.73), crystal meth (aPR = 1.45), and heroin/morphine use (aPR = 2.48).

CONCLUSION

The landscape of illicit opioid use is changing in BC and more people are using fentanyl knowingly. The increasing prevalence of known fentanyl use is concerning and calls for further investments in public awareness and public policy efforts regarding fentanyl exposure and risks.

Comparing the predictive capability of self-report and medically-verified non-fatal overdose in adults released from prison: A prospective data linkage study

BACKGROUND

Self-reported non-fatal overdose (NFOD) is a predictor of future overdose and is often used to target overdose prevention for people released from prison. However, the level of agreement between self-reported and medically-verified NFOD history remains unknown. This study aimed to determine the agreement between, and predictive value of, self-reported and medically-verified history of NFOD in people recently released from prison.

METHODS

Pre-release baseline survey data from 1307 adults in prison surveyed from 2008 to 2010 in Queensland, Australia were linked to ambulance, emergency department, and hospital records. We compared the agreement of self-reported NFOD history in the baseline survey and medically-verified NFOD ascertained through linked medical data. Unadjusted and adjusted regression models were used to determine the association between self-reported and medically verified NFOD history and medically-verified NFOD after release from prison.

RESULTS

224 (19 %) participants self-reported NFOD history only, 75 (5 %) had medically-verified NFOD history only, and 56 (4 %) both self-reported and had medically-verified NFOD history. Compared to those with no NFOD history, those who self-reported and had a medical history of NFOD (adjusted hazard ratio (AHR) 6.1, 95 %CI 3.1-11.9), those with a medical history only (AHR 3.4, 95 %CI 1.7-7.0), and those who self-reported only (AHR 1.8, 95 %CI 1.0-3.5) were at increased risk of medically-verified NFOD after release from prison.

CONCLUSIONS

Relying on self-report of NFOD is likely to miss people at increased risk of future NFOD, many of whom could be identified through medical records. Wherever possible, data related to NFOD should be triangulated from multiple sources.

Non-fatal drug overdose after release from prison: A prospective data linkage study

BACKGROUND

Adults released from prison are at increased risk of poor health outcomes and preventable mortality, including from overdose. Non-fatal overdose (NFOD) is a strong predictor of future overdose and associated with considerable morbidity. This study aims to the determine the incidence, predictors and clinical characteristics of NFOD following release from prison.

METHODS

We used pre-release interview data collected for a randomised controlled trial in 2008-2010, and linked person-level, state-wide ambulance, emergency department, and hospital records, from a representative sample of 1307 adults incarcerated in Queensland, Australia. The incidence of NFOD following release from prison was calculated. A multivariate Andersen-Gill model was used to identify demographic, health, social, and criminal justice predictors of NFOD.

RESULTS

The crude incidence rate (IR) of NFOD was 47.6 (95%CI 41.1-55.0) per 1000 person-years and was highest in the first 14 days after release from prison (IR = 296 per 1000 person-years, 95%CI 206-426). In multivariate analyses, NFOD after release from prison was positively associated with a recent history of substance use disorder (SUD), dual diagnosis of mental illness and SUD, lifetime history of injecting drug use, lifetime history of NFOD, being dispensed benzodiazepines after release, a shorter index incarceration, and low perceived social support. The risk of NFOD was lower for people with high-risk alcohol use and while incarcerated.

CONCLUSIONS

Adults released from prison are at high risk of non-fatal overdose, particularly in the first 14 days after release. Providing coordinated transitional care between prison and the community is likely critical to reduce the risk of overdose.

Lessons learned from ramping up a Canadian Take Home Naloxone programme during a public health emergency: a mixed-methods study

OBJECTIVES

This study describes the 2016 expansion of the British Columbia Take Home Naloxone (BCTHN) programme quantitatively and explores the challenges, facilitators and successes during the ramp up from the perspectives of programme stakeholders.

DESIGN

Mixed-methods study.

SETTING

The BCTHN programme was implemented in 2012 to reduce opioid overdose deaths by providing naloxone kits and overdose recognition and response training in BC, Canada. An increase in the number of overdose deaths in 2016 in BC led to the declaration of a public health emergency and a rapid ramp up of naloxone kit production and distribution. BCTHN distributes naloxone to the five regional health authorities of BC.

PARTICIPANTS

Focus groups and key informant interviews were conducted with 18 stakeholders, including BC Centre for Disease Control staff, urban and rural site coordinators, and harm reduction coordinators from the five regional health authorities across BC.

PRIMARY AND SECONDARY OUTCOME MEASURES

Take Home Naloxone (THN) programme activity, qualitative themes and lessons learnt were identified.

RESULTS

In 2016, BCTHN responded to a 20-fold increase in demand of naloxone kits and added over 300 distribution sites. Weekly numbers of overdose events and overdose deaths were correlated with increases in THN kits ordered the following week, during 2013-2017. Challenges elicited include forecasting demand, operational logistics, financial, manpower and policy constraints. Facilitators included outsourcing kit production, implementing standing orders and policy changes in naloxone scheduling, which allowed for easier hiring of staff, reduced paperwork and expanded client access.

CONCLUSION

For THN programmes preparing for potential increases in naloxone demand, we recommend creating an online database, implementing standing orders and developing online training resources for standardised knowledge translation to site staff and clients.

The uptake of the pharmacy-dispensed naloxone kit program in Ontario: A population-based study

BACKGROUND

Naloxone is a life-saving antidote for opioid overdoses. In June 2016, the Ontario government implemented the Ontario Naloxone Program for Pharmacies (ONPP) to enhance access to naloxone.

OBJECTIVE

We examined the initial uptake of naloxone through the ONPP and characteristics of the individuals receiving and pharmacies dispensing naloxone kits.

METHODS

We conducted a population-based study of all Ontario residents who received a naloxone kit between July 1, 2016 and March 31, 2018. This involved 1) a cross-sectional analysis of monthly rates of kits dispensed; and 2) a descriptive analysis of all individuals and pharmacies who accessed and dispensed naloxone, respectively. We stratified individuals according to their opioid exposure as: prescription opioid agonist therapy (OAT) recipients, prescription opioid recipients, those with past opioid exposure and those with no/unknown opioid exposure. We calculated a Lorenz curve comparing the cumulative percent of naloxone-dispensing pharmacies and cumulative percent of naloxone kits dispensed and the corresponding Gini coefficient.

RESULTS

Naloxone dispensing through the ONPP increased considerably from 1.9 to 54.3 kits per 100,000 residents over the study period. In this time, 2,729 community pharmacies dispensed 91,069 kits to 67,910 unique individuals. Uptake was highest among prescription OAT recipients (40.7% of OAT recipients dispensed at least one kit), compared with 1.6% of prescription opioid recipients, 1.0% of those with past opioid exposure and 0.3% with no/unknown opioid exposure. Naloxone dispensing was highly clustered among pharmacies (Gini = 0.78), with 55.6% of Ontario pharmacies dispensing naloxone, and one-third (33.7%) of kits dispensed by the top 1.0% of naloxone-dispensing pharmacies.

CONCLUSION

The ONPP launch led to a rapid increase in the number of naloxone kits dispensed in Ontario. Although the program successfully engaged people prescribed OAT, efforts to increase uptake among others at risk of opioid overdose appear warranted. Opportunities for expanding pharmacy participation should be identified and pursued.

Factors associated with willingness to wear an electronic overdose detection device

Background

North America is in the midst of an opioid overdose epidemic. Although take-home naloxone and other measures have been an effective strategy to reduce overdoses, many events are unwitnessed and mortality remains high amongst those using drugs alone. While wearable devices that can detect and alert others of an overdose are being developed, willingness of people who use drugs to wear such a device has not been described.

Methods

Drug using persons enrolled in a community-recruited cohort in Vancouver, Canada, were asked whether or not they would be willing to wear a device against their skin that would alert others in the event of an overdose. Logistic regression was used to identify factors independently associated with willingness to wear such a device.

Results

Among the 1061 participants surveyed between December 2017 and May 2018, 576 (54.3%) were willing to wear an overdose detection device. Factors independently associated with willingness included ever having overdosed (adjusted odds ratio [AOR] = 1.39, 95% confidence interval [CI] 1.06–1.83), current methadone treatment (AOR = 1.86, 95% CI 1.45–2.40), female gender AOR = 1.41, 95% CI 1.09–1.84) and a history of chronic pain (AOR = 1.53, 95% CI 1.19–1.96). Whereas homelessness (AOR = 0.67, 95% CI 0.50–0.91) was negatively associated with willingness.

Conclusions

A high level of willingness to wear an overdose detection device was observed in this setting and a range of factors associated with overdose were positively associated with willingness. Since some factors, such as homelessness may be a barrier, further research is needed to investigate explanations for unwillingness and to evaluate real world acceptability of a wearable overdose detection devices as this technology becomes available.

A Case of Opioid Overdose and Subsequent Death After Medically Supervised Withdrawal: The Problematic Role of Rapid Tapers for Opioid Use Disorder

BACKGROUND

Relapse to opioid use is common after rapid opioid withdrawal. As a result, short-term tapers of opioid agonist/partial agonist medications, such as methadone and buprenorphine/naloxone, are no longer recommended by recent clinical care guidelines for the management of opioid use disorder. Nonetheless, rapid tapers are still commonplace in medically supervised withdrawal settings.

CASE SUMMARY

We report a case of an individual with opioid use disorder who was prescribed a rapid buprenorphine/naloxone taper in a medically supervised withdrawal facility and who had a subsequent opioid overdose and death after discharge.

DISCUSSION

The fatal outcome in this case study underscores the potential severe harms associated with use of rapid tapers. Given the increased overdose risk, tapers should be avoided and continuing care strategies, such as maintenance pharmacotherapy, should be initiated in medically supervised withdrawal settings.

Addressing Intersecting Housing and Overdose Crises in Vancouver, Canada: Opportunities and Challenges from a Tenant-Led Overdose Response Intervention in Single Room Occupancy Hotels

We examined the acceptability, feasibility, and implementation of the Tenant Overdose Response Organizers program (TORO)-a tenant-led naloxone training and distribution intervention. This pilot project was implemented in privately owned single room occupancy (SRO) hotels that were disproportionately affected by overdose in Vancouver's Downtown Eastside (DTES) neighborhood. Semi-structured qualitative interviews were conducted with 20 tenants who had participated in a TORO training session and administered naloxone to someone in their SRO hotel or had overdosed in their SRO hotel and received naloxone from another tenant. Focus groups were conducted with 15 peer workers who led the TORO program in their SRO building. Interviews and focus groups were transcribed and analyzed thematically. Ethnographic observation at SRO hotels involved in the intervention was also co-led with peer research assistants. Ten SROs were included in the study. The level of acceptability of the TORO program was high, with participants describing the urgency for an intervention amid the frequency of overdoses in their buildings. Overdose response training enhanced participants' knowledge and skills, and provided them a sense of recognition. Additionally, the TORO program was feasible in some buildings more than others. While it provided important training and engaged isolated tenants, there were structural barriers to program feasibility. The implementation of the TORO program was met with some successes in terms of its reach and community development, but participants also discussed a lack of emotional support due to overdose frequency, leading to burnout and vulnerability. Our findings suggest that the TORO program was affected by social, structural, and physical environmental constraints that impacted program feasibility and implementation. Despite these constraints, peer-led in-reach overdose response interventions are effective tools in addressing overdose risk in SROs. Future housing interventions should consider the intersecting pathways of overdose risk, including how these interventions may exacerbate other harms for people who use drugs. Further research should explore the impacts of environmental factors on overdose response interventions in other housing contexts.

"I Gotta Go With Modern Technology, So I'm Gonna Give 'em the Narcan": The Diffusion of Innovations and an Opioid Overdose Prevention Program

Fatal opioid overdoses can be prevented by opioid overdose prevention programs (OOPPs). The present study qualitatively examined the diffusion process of an OOPP among 30 persons who inject drugs (PWIDs) in an opioid-saturated community. Purposive sampling was used to recruit participants into three groups based on familiarity with the OOPP. Findings revealed that participants often adopted the OOPP, which was offered by a local harm reduction organization, if first exposed by staff hosting and implementing it. Barriers to adoption included belief that OOPP training was lengthy or unnecessary, lack of perceived relative advantage, nonengagement with the host organization, and trepidation of administering withdrawal-causing medication to fellow PWIDs. Participants outside of networks diffusing the OOPP were isolated from other PWIDs. Staff from the host organization were influential in encouraging OOPP adoption, which underscores their importance in the effort to reduce fatal overdoses.

Correlates of seeking emergency medical help in the event of an overdose in British Columbia, Canada: Findings from the Take Home Naloxone program

BACKGROUND

British Columbia (BC), Canada, is experiencing an unprecedented number of opioid overdoses mainly due to the contamination of illicit drugs with fentanyl and its analogues. Reluctance to seek emergency medical help (i.e., by calling 9-1-1) has been identified as a barrier to optimal care for overdose victims. This study aimed to identify the correlates of seeking help during an overdose event when naloxone was administered via BC's Take Home Naloxone (THN) program.

METHODS

In this cross-sectional study, we reviewed administrative records (from July 2015 to December 2017) about overdose events submitted by THN participants when they received their replacement naloxone kits (n = 2350). The primary outcome of the study was reported calling 9-1-1 and modified Poisson regression models were built to investigate the factors associated with help-seeking during an overdose event.

RESULTS

Most overdose victims were men (69.0%) and >30 years old (61.5%). Overall, participants reported calling 9-1-1 in 1310 (55.7%) overdose events. In the multivariable model, the likelihood of calling 9-1-1 was significantly and positively associated with the overdose victim being male and receiving rescue breathing. The likelihood of calling 9-1-1 was significantly and negatively associated with the overdoses occurring in private residences and health regions other than Vancouver Coastal which delivers services to mostly urban residents.

CONCLUSION

Overall, medical help was sought for 55.7% of overdoses where naloxone was administered. Overdoses occurring among male victims as well as those receiving higher doses of naloxone and mouth-to-mouth rescue breathing were associated with a higher likelihood of help-seeking by responders. Future interventions need to encourage people who witness an overdose to seek emergency medical help.

Characterizing peer roles in an overdose crisis: Preferences for peer workers in overdose response programs in emergency shelters

OBJECTIVES

A growing body of research points to increasing peer involvement in programs for people who use drugs, although this work has focused primarily on naloxone education and distribution. This study extends this work by examining the roles of peers in leading a novel overdose response program within emergency shelters.

METHODS

Semi-structured qualitative interviews were conducted with 24 people who use drugs, recruited from two emergency shelters, as well as ethnographic observation in these settings. Interviews were transcribed and analyzed thematically with attention to peer roles.

RESULTS

Four themes emerged from the data. First, participants discussed the development of peer support through relationship building and trust. Second, participants described a level of safety using drugs in front of peer workers due to their shared lived experience. Third, peer workers were described as favorable compared to non-peer staff because of nominal power dynamics and past negative experiences with non-peer staff. Last, given the context of the overdose crisis, peer worker roles were often routinized informally across the social networks of residents, which fostered a collective obligation to respond to overdoses.

CONCLUSIONS

Findings indicate that participants regarded peer workers as providing a range of unique benefits. They emphasized the critical role of both social networks and informal roles in optimizing overdose responses. The scaling up of peer programming in distinct risk environments such as emergency shelters through both formal and informal roles has potential to help improve overdose prevention efforts, including in settings not well served by conventional public health programming.

Yes, not now, or never: an analysis of reasons for refusing or accepting emergency department-based take-home naloxone

OBJECTIVE

Take-home naloxone (THN) reduces deaths from opioid overdose. To increase THN distribution to at-risk emergency department (ED) patients, we explored reasons for patients' refusing or accepting THN.

METHODS

In an urban teaching hospital ED, we identified high opioid overdose risk patients according to pre-specified criteria. We offered eligible patients THN and participation in researcher-administered surveys, which inquired about reasons to refuse or accept THN and about THN dispensing location preferences. We analyzed refusal and acceptance reasons in open-ended responses, grouped reasons into categories (absolute versus conditional refusals,) then searched for associations between patient characteristics and reasons.

RESULTS

Of 247 patients offered THN, 193 (78.1%) provided reasons for their decision. Of those included, 69 (35.2%) were female, 91 (47.2%) were under age 40, 61 (31.6%) were homeless, 144 (74.6%) reported injection drug use (IDU), and 131 (67.9%) accepted THN. Of 62 patients refusing THN, 19 (30.7%) felt "not at risk" for overdose, while 28 (45.2%) gave conditional refusal reasons: "too sick," "in a rush," or preference to get THN elsewhere. Non-IDU was associated with stating "not at risk," while IDU, homelessness, and age under 40 were associated with conditional refusals. Among acceptances, 86 (65.7%) mentioned saving others as a reason. Most respondents preferred other dispensing locations beside the ED, whether or not they accepted ED THN.

CONCLUSION

ED patients refusing THN felt "not at risk" for overdose or felt their ED visit was not the right time or place for THN. Most accepting THN wanted to save others.

Distribution of take-home opioid antagonist kits during a synthetic opioid epidemic in British Columbia, Canada: a modelling study

BACKGROUND

Illicit use of high-potency synthetic opioids has become a global issue over the past decade. This misuse is particularly pronounced in British Columbia, Canada, where a rapid increase in availability of fentanyl and other synthetic opioids in the local illicit drug supply during 2016 led to a substantial increase in overdoses and deaths. In response, distribution of take-home naloxone (THN) overdose prevention kits was scaled up (6·4-fold increase) throughout the province. The aim of this study was to estimate the impact of the THN programme in terms of the number of deaths averted over the study period.

METHODS

We estimated the impact of THN kits on the ongoing epidemic among people who use illicit opioids in British Columbia and explored counterfactual scenarios for the provincial response. A Markov chain model was constructed explicitly including opioid-related deaths, fentanyl-related deaths, ambulance-attended overdoses, and uses of THN kits. The model was calibrated in a Bayesian framework incorporating population data between Jan 1, 2012, and Oct 31, 2016.

FINDINGS

22 499 ambulance-attended overdoses and 2121 illicit drug-related deaths (677 [32%] deaths related to fentanyl) were recorded in the study period, mostly since January, 2016. In the same period, 19 074 THN kits were distributed. We estimate that 298 deaths (95% credible interval [CrI] 91-474) were averted by the THN programme. Of these deaths, 226 (95% CrI 125-340) were averted in 2016, following a rapid scale-up in distribution of kits. We infer a rapid increase in fentanyl adulterant at the beginning of 2016, with an estimated 2·3 times (95% CrI 2·0-2·9) increase from 2015 to 2016. Counterfactual modelling indicated that an earlier scale-up of the programme would have averted an additional 118 deaths (95% CrI 64-207). Our model also indicated that the increase in deaths could parsimoniously be explained through a change in the fentanyl-related overdose rate alone.

INTERPRETATION

The THN programme substantially reduced the number of overdose deaths during a period of rapid increase in the number of illicit drug overdoses due to fentanyl in British Columbia. However, earlier adoption and distribution of the THN intervention might have had an even greater impact on overdose deaths. Our findings show the value of a fast and effective response at the start of a synthetic opioid epidemic. We also believe that multiple interventions are needed to achieve an optimal impact.

FUNDING

Canadian Institutes of Health Research Partnerships for Health Systems Improvement programme (grant 318068) and Natural Science and Engineering Research Council of Canada (grant 04611).

Overdose Education and Naloxone Distribution Programmes and the Ethics of Task Shifting

North America is in the grips of an epidemic of opioid-related poisonings. Overdose education and naloxone distribution (OEND) programmes emerged as an option for structurally vulnerable populations who could not or would not access mainstream emergency medical services in the event of an overdose. These task shifting programmes utilize lay persons to deliver opioid resuscitation in the context of longstanding stigmatization and marginalization from mainstream healthcare services. OEND programmes exist at the intersection of harm reduction and emergency services. One goal of OEND programmes is to help redress the health-related inequities common among people who use drugs, which include minimizing the gap between people who use drugs and the formal healthcare system. However, if this goal is not achieved these inequities may be entrenched. In this article, we consider the ethical promises and perils associated with OEND as task shifting. We argue that public health practitioners must consider the ethical aspects of task shifting programmes that may inadvertently harm already structurally vulnerable populations. We believe that even if OEND programmes reduce opioid-related deaths, we nevertheless question if, by virtue of its existence, OEND programmes might also unintentionally disenfranchise structurally vulnerable populations from comprehensive healthcare services, including mainstream emergency care.

Naloxone dosage for opioid reversal: current evidence and clinical implications

Opioid-related mortality is a growing problem in the United States, and in 2015 there were over 33,000 opioid-related deaths. To combat this mortality trend, naloxone is increasingly being utilized in a pre-hospital setting by emergency personnel and prescribed to laypersons for out-of-hospital administration. With increased utilization of naloxone there has been a subsequent reduction in mortality following an opioid overdose. Reversal of opioid toxicity may precipitate an opioid-withdrawal syndrome. At the same time, there is a risk of inadequate response or re-narcotization after the administration of a single dose of naloxone in patients who have taken large doses or long-acting opioid formulations, as the duration of effect of naloxone is shorter than that of many opioid agonists. As out-of-hospital use of this medication is growing, so too is concern about effective but safe dosing.

Alberta's provincial take-home naloxone program: A multi-sectoral and multi-jurisdictional response to overdose

SETTING

Alberta is a prairie province located in western Canada, with a population of approximately 4.3 million. In 2016, 363 Albertans died from apparent drug overdoses related to fentanyl, an opioid 50-100 times more toxic than morphine. This surpassed the number of deaths from motor vehicle collisions and homicides combined.

INTERVENTION

Naloxone is a safe, effective, opioid antagonist that may quickly reverse an opioid overdose. In July 2015, a committee of community-based harm reduction programs in Alberta implemented a geographically restricted take-home naloxone (THN) program. The successes and limitations of this program demonstrated the need for an expanded, multi-sectoral, multi-jurisdictional response. The provincial health authority, Alberta Health Services (AHS), used previously established incident command system processes to coordinate implementation of a provincial THN program.

OUTCOMES

Alberta's provincial THN program was implemented on December 23, 2015. This collaborative program resulted in a coordinated response across jurisdictional levels with wide geographical reach. Between December 2015 and December 2016, 953 locations, including many community pharmacies, registered to dispense THN kits, 9572 kits were distributed, and 472 reversals were reported. The provincial supply of THN kits more than tripled from 3000 to 10 000.

IMPLICATIONS

Alberta was uniquely poised to deliver a large, province-wide, multi-sectoral and multi-jurisdictional THN program as part of a comprehensive response to increasing opioid-related morbidity and mortality. The speed at which AHS was able to roll out the program was made possible by work done previously and the willingness of multiple jurisdictions to work together to build on and expand the program.

Availability of naloxone in Canadian pharmacies:a population-based survey

BACKGROUND

Naloxone is life-saving when administered after opioid overdose. In March 2016, the Canadian government made the antidote available without prescription, but anecdotal reports suggest members of the public have difficulty in procuring it. We examined the availability of naloxone in community pharmacies across Canada.

METHODS

We identified community pharmacies in Canada (n = 10 296) and randomly selected 506, stratified using proportionate allocation by population size. We excluded pharmacies in Alberta and Manitoba because these provinces released data indicating which pharmacies made naloxone available to the public during the data collection phase of the study. We contacted pharmacies by telephone during working hours and used a standardized survey to enquire about the availability of naloxone, the associated cost and the need for a prescription. When a pharmacy did not have naloxone available, we ascertained if it could be procured within 7 days.

RESULTS

We contacted 429 community pharmacies. Of these, 103 (24.0%) had naloxone available. Availability was highest in British Columbia (33 of 65; 50.8%), followed by the Maritimes (12 of 35; 34.3%), Ontario (52 of 193; 26.9%) and central and northern Canada (5 of 21; 23.8%). In Quebec, 1 of 115 (0.9%) pharmacies had naloxone available. Of pharmacies without naloxone, fewer than 1 in 5 anticipated being able to provide it within 1 week (63 of 326; 19.3%).

INTERPRETATION

Most community pharmacies in Canada did not have naloxone on hand and in those without naloxone available, fewer than 1 in 5 anticipated being able to provide it within 1 week. Our findings emphasize the need for increased availability of naloxone in pharmacies across Canada.

Intranasal naloxone and related strategies for opioid overdose intervention by nonmedical personnel: a review

Deaths due to prescription and illicit opioid overdose have been rising at an alarming rate, particularly in the USA. Although naloxone injection is a safe and effective treatment for opioid overdose, it is frequently unavailable in a timely manner due to legal and practical restrictions on its use by laypeople. As a result, an effort spanning decades has resulted in the development of strategies to make naloxone available for layperson or "take-home" use. This has included the development of naloxone formulations that are easier to administer for nonmedical users, such as intranasal and autoinjector intramuscular delivery systems, efforts to distribute naloxone to potentially high-impact categories of nonmedical users, as well as efforts to reduce regulatory barriers to more widespread distribution and use. Here we review the historical and current literature on the efficacy and safety of naloxone for use by nonmedical persons, provide an evidence-based discussion of the controversies regarding the safety and efficacy of different formulations of take-home naloxone, and assess the status of current efforts to increase its public distribution. Take-home naloxone is safe and effective for the treatment of opioid overdose when administered by laypeople in a community setting, shortening the time to reversal of opioid toxicity and reducing opioid-related deaths. Complementary strategies have together shown promise for increased dissemination of take-home naloxone, including 1) provision of education and training; 2) distribution to critical populations such as persons with opioid addiction, family members, and first responders; 3) reduction of prescribing barriers to access; and 4) reduction of legal recrimination fears as barriers to use. Although there has been considerable progress in decreasing the regulatory and legal barriers to effective implementation of community naloxone programs, significant barriers still exist, and much work remains to be done to integrate these programs into efforts to provide effective treatment of opioid use disorders.

Emergency physicians' attitudes and perceived barriers to the implementation of take-home naloxone programs in Canadian emergency departments

OBJECTIVES

Rates of opioid-related deaths have reached the level of national public health crisis in Canada. Community-based opioid overdose education and naloxone distribution (OEND) programs distribute naloxone to people at risk, and the emergency department (ED) may be an underutilized setting to deliver naloxone to these people. The goal of this study was to identify Canadian emergency physicians' attitudes and perceived barriers to the implementation of take-home naloxone programs.

METHODS

This was an anonymous Web-based survey of members of the Canadian Association of Emergency Physicians. Survey questions were developed by the research team and piloted for face validity and clarity. Two reminder emails were sent to non-responders at 2-week intervals. Respondent demographics were collected, and Likert scales were used to assess attitudes and barriers to the prescription of naloxone from the ED.

RESULTS

A total of 459 physicians responded. The majority of respondents were male (64%), worked in urban tertiary centres (58.3%), and lived in Ontario (50.6%). Overall, attitudes to OEND were strongly positive; 86% identified a willingness to prescribe naloxone from the ED. Perceived barriers included support for patient education (57%), access to follow-up (44%), and inadequate time (37%). In addition to people at risk of overdose, 77% of respondents identified that friends and family members may also benefit.

CONCLUSIONS

Canadian emergency physicians are willing to distribute take-home naloxone, but thoughtful systems are required to facilitate opioid OEND implementation. These data will inform the development of these programs, with emphasis on multidisciplinary training and education.

Naloxone for heroin, prescription opioid, and illicitly made fentanyl overdoses: Challenges and innovations responding to a dynamic epidemic

Community-based overdose prevention programs first emerged in the 1990's and are now the leading public health intervention for overdose. Key elements of these programs are overdose education and naloxone distribution to people who use opioids and their social networks. We review the evolution of naloxone programming through the heroin overdose era of the 1990's, the prescription opioid era of the 2000's, and the current overdose crisis stemming from the synthetic opioid era of illicitly manufactured fentanyl and its analogues in the 2010's. We present current challenges arising in this new era of synthetic opioids, including variable potency of illicit drugs due to erratic adulteration of the drug supply with synthetic opioids, potentially changing efficacy of standard naloxone formulations for overdose rescue, potentially shorter overdose response time, and reports of fentanyl exposure among people who use drugs but are opioid naïve. Future directions for adapting naloxone programming to the dynamic opioid epidemic are proposed, including scale-up to new venues and social networks, new standards for post-overdose care, expansion of supervised drug consumption services, and integration of novel technologies to detect overdose and deliver naloxone.

Awareness, Possession, and Use of Take-Home Naloxone Among Illicit Drug Users, Vancouver, British Columbia, 2014-2015

OBJECTIVES

Although take-home naloxone (THN) programs are integral in strategies to prevent overdose deaths among opioid users, the uptake of THN among people who use drugs (PWUD) (including non-opioid users) is unknown. The objectives of this study were to determine awareness, possession, and use of THN among PWUD in Vancouver, Canada, and identify barriers to adopting this strategy.

METHODS

From December 1, 2014, to May 29, 2015, participants in 2 prospective cohort studies of PWUD in Vancouver completed a standardized questionnaire, which asked about awareness, possession, and use of THN; sociodemographic characteristics; and drug use patterns. We conducted multivariable logistic regression analyses to determine factors independently associated with awareness and possession of THN.

RESULTS

Of 1137 PWUD, 727 (64%) reported at least 1 previous overdose ever, and 220 (19%) had witnessed an overdose in the previous 6 months. Although 769 (68%) participants overall reported awareness of THN, only 88 of 392 (22%) opioid users had a THN kit, 18 (20%) of whom had previously administered naloxone. Factors that were positively associated with awareness of THN included witnessing an overdose in the previous 6 months (adjusted odds ratio [aOR] = 2.23; 95% confidence interval [CI], 1.49-3.34; P < .001), possession of THN (aOR = 1.85; 95% CI, 1.11-3.06; P = .02), younger age (aOR = 1.02; 95% CI, 1.01-1.04; P = .003), white race (aOR = 1.67; 95% CI, 1.27-2.19; P < .001), hepatitis C infection (aOR = 1.63; 95% CI, 1.13-2.36; P = .01), residing in Vancouver's Downtown Eastside neighborhood (aOR = 1.93; 95% CI, 1.47-2.53; P < .001), and at least daily heroin injection (aOR = 1.69; 95% CI, 1.09-2.62; P < .02).

CONCLUSION

Efforts to improve knowledge of and participation in the THN program may contribute to reduced opioid overdose mortality in Vancouver.

Naloxone and the Inner City Youth Experience (NICYE): a community-based participatory research study examining young people's perceptions of the BC take home naloxone program

Background

Take home naloxone (THN) programs reduce mortality by training bystanders to respond to opioid overdoses. Clinical observation by the health care team at the Inner City Youth (ICY) program indicated that young adults appeared to enthusiastically participate in the THN program and developed improved relationships with staff after THN training. However, we found a dearth of literature exploring the experiences of young adults with THN programs. This study set out to address this gap and identify suggestions from the young adults for program improvement. The primary research question was “How do street-involved young people experience the THN Program in Vancouver, BC?”

Methods

The study was undertaken at the ICY Program. Two peer researchers with lived experience of THN were recruited from ICY and were involved in all phases of the study. The peer researchers and a graduate student facilitated two focus groups and five individual interviews with ICY program participants using a semi-structured interview guide. Audio recordings were transcribed verbatim. The cut-up-and-put-in-folders approach was used to identify emerging themes.

Results

The themes that emerged were perceptions of risk, altruism, strengthening relationship with staff, access to training, empowerment, and confidence in ability to respond, and suggestions for youth-friendly training. These themes were then situated within the framework of the health belief model to provide additional context. Participants viewed themselves as vulnerable to overdose and spoke of the importance of expanding access to THN training. Following training, participants reported an increase in internal locus of control, an improved sense of safety among the community of people who use drugs, improved self-esteem, and strengthened relationships with ICY staff. Overall, participants found THN training engaging, which appeared to enhance participation in other ICY programming.

Conclusions

Young people perceived THN training as a positive experience that improved relationships with staff. Participant recommendations for quality improvement were implemented within the provincial program.

Electronic supplementary material

The online version of this article (doi:10.1186/s12954-017-0160-3) contains supplementary material, which is available to authorized users.

Still "at risk": An examination of how street-involved young people understand, experience, and engage with "harm reduction" in Vancouver's inner city

BACKGROUND

Vancouver is an international leader in implementing interventions to reduce harms related to drug use. However, street-involved young people who use drugs continue to be vulnerable to overdose death, hepatitis C (HCV) infection, and high rates of syringe sharing. To better understand this in the context of the intensive public health response, we examined how young people, who are involved in the 'street drug scene', understood, experienced and engaged with harm reduction.

METHODS

Twelve semi-structured interviews were conducted in 2013 with 13 young people (ages 17-28) recruited from the At-Risk Youth Study, a prospective cohort of street-involved and drug-using young people. These interviews were embedded within a larger, eight-year program of ethnographic research and explored participants' understandings of harm reduction, their use of specific services, and their ideas about improving their day-to-day lives. Interviews were transcribed verbatim and a thematic analysis was performed.

RESULTS

Young peoples' ideas about harm reduction were diverse and expansive. They articulated the limitations of existing programs, indicating that while they are positioned to reduce the risk of HIV and HCV transmission, they offer little meaningful support to improve young peoples' broader life chances. Young people described strategies to mitigate risk and harm in their own lives, including transitioning to drugs deemed less harmful and attempting to gain access to drug treatment. Finally, young people indicated that spatial considerations (e.g., distance from Vancouver's Downtown Eastside) strongly determined access to services.

CONCLUSIONS

In Vancouver, a large, well established harm reduction infrastructure seeks to reduce HIV and HCV transmission among street-involved young people. However, young peoples' multiple understandings, experiences and engagements with harm reduction in this setting illustrate the limitations of the existing infrastructure in improving their broader life chances.