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Introduction An ED visit for opioid overdose may be a person's only contact with the medical and behavioral health care systems and is an important opportunity to reduce risk of subsequent overdose and death. While ED initiatives to engage people with opioid use disorder (OUD) are being increasingly implemented, there are significant gaps in the receipt of services at the time of the ED encounter. Methods This is a retrospective cohort study of an outreach pilot project providing real-time telehealth delivered buprenorphine initiation and referral to community harm reduction and addiction treatment services via a follow up telephone call to patients after an ED visit for an opioid overdose. Results From January 2020 to April 2021 there were 606 patients with an ED visit for an opioid overdose eligible for a callback. Of the 606 eligible patients, 254/645 (42%) patients could be contacted and accepted service and/or treatment referrals. Fifteen patients were connected same-day to a buprenorphine prescriber for a telehealth encounter and, of connected patients, nine received a buprenorphine prescription. Conclusion A post-ED follow up telephone call protocol is an opportunity to improve treatment engagement and access to buprenorphine for patients at high risk for opioid overdose and death.

The risk of severe precipitated opioid withdrawal (POW) is amplified when precipitated by a long-acting opioid antagonist. IM extended release naltrexone (XRNTX;Vivitrol®) is an FDA approved therapy to prevent relapse of opioid and alcohol abuse. Two cases of precipitated opioid withdrawal from XRNTX are presented that illustrate different patient reactions to POW. A 56-year-old woman developed a hypertensive emergency and required continuous intravenous vasodilator, clonidine, and intensive care monitoring after re-initiation of XRNTX following opioid relapse. A 25-year-old man developed agitation and altered mental status after receipt of XRNTX at the conclusion of a twelve-day detoxification program during which he continued surreptitious use of heroin. The patient received benzodiazepines and haloperidol without adequate affect, and required intubation with propofol, lorazepam, and dexmedetomidine infusions. Management of POW from XRNTX is a challenge to emergency providers and protocols to guide management do not exist. Recommended therapies include intravenous fluids, anti-emetics, clonidine, or benzodiazepines as well as therapy tailored to the organ system affected. To minimize risk of POW it is important for providers instituting XRNTX to adhere to the manufacturers warnings and clinic protocols including a naloxone challenge and ensure an adequate opioid free period prior to administration of XRNTX.