Emergency department-initiated standard versus high-dose buprenorphine induction (ENVISION): A randomised clinical trial protocol.
Introduction: The initiation of buprenorphine for patients with opioid use disorder (OUD) in the emergency department (ED) has been associated with improved outcomes including reduced ED visits and increased treatment engagement. Though both standard-dose (8 mg buprenorphine equivalent) and high-dose (24 mg buprenorphine equivalent) strategies to initiate buprenorphine have been used in the ED, no prospective trials comparing outcomes among patients receiving these treatments have been reported.
Methods and analysis: This multisite randomised clinical trial (CTN-0145) is a multisite double-blind, double-dummy, randomised clinical trial enrolling 360 emergency department patients with moderate-to-severe OUD. Enrolled patients will be randomised to one of two study arms: standard-dose induction or high-dose induction, both provided in the ED. This study will engage, train and provide resources to five EDs throughout the US to recruit patients with untreated OUD into a randomised clinical trial. The primary aim is to evaluate the effects of the standard-dose induction and high-dose induction on rates of OUD treatment participation within 10 days post-randomisation. The secondary aims are to evaluate differences between standard-dose induction and high-dose induction on the outcomes of opioid craving, opioid withdrawal symptoms and illicit drug use assessed during 10 days post randomisation and evaluate the effects between treatment arms on rates of OUD treatment participation within 30 days post randomisation.
Ethics and dissemination: This study is funded by the National Institute on Drug Abuse and has been approved by the WCG Instutitional Review Board. It has been registered at clinicaltrials.gov. This study will inform the strategy for treatment initiation with buprenorphine among diverse ED settings and will provide ongoing evidence to support the safety and efficacy of initiating treatment for OUD in the ED.
Related protocols: CTN-0145