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Opioid Overdose and Naloxone Dosing at Insite Supervised Injection Facility in British Columbia: A Retrospective Cohort Study

Objectives:

We aimed to understand trends in opioid overdoses, naloxone dosing, and overdose reversal from 2014 to 2017 at Insite, a community-supervised consumption site in Vancouver, British Columbia.

Methods:

We performed a retrospective cohort study of patients who overdosed on opioids at Insite. We evaluated yearly trends in total overdoses, naloxone doses administered, and proportions of patients reversed (based on our definitions of “probable” and “confirmed” reversal), with particular attention to trends before and after the emergence of illicit fentanyl in 2015.

Results:

There was an increase in total overdoses at Insite from 2014–2015 (n=586) to 2016–2017 (n=2033). Overdose reversal data were limited by a large proportion of patients for whom there was not enough information to adjudicate whether reversal occurred, and therefore were marked “unspecified” [n=1537/2619 (58.7%)]. Within these limitations, fewer patients were reversed after 2015 (44.1% in 2016, 29.7% in 2017) than before (47.8% in 2014, 55.1% in 2015) (χ2=73.1, P

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Posted in: Journal Article Abstracts on 03/30/2023 | Link to this post on IFP |
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