Opioid Overdose After Medication for Opioid Use Disorder Initiation Following Hospitalization or ED Visit

Area of Science:

• Public Health
• Addiction Medicine
• Health Services Research

Background:

• Hospitalizations for opioid use disorder (OUD) offer a critical window for initiating medication for opioid use disorder (MOUD).
• Understanding the impact of timely MOUD initiation on overdose risk is crucial for patient outcomes.

Purpose of the Study:

• To determine if starting MOUD post-hospitalization or emergency department (ED) visit is linked to the odds of fatal and nonfatal opioid overdose.
• To evaluate these associations at 6 and 12 months following the index healthcare encounter.

Main Methods:

• Population-based cohort study utilizing linked administrative health data from the Oregon Comprehensive Opioid Risk Registry (2017-2019).
• Included individuals aged 18+ with OUD diagnosis codes during an ED visit or hospitalization.
• Logistic regression analyzed the association between MOUD receipt within 7 days of discharge and overdose events at 6 and 12 months.

Main Results:

• The study analyzed 22,235 patients with OUD-related hospital visits; 5.3% received MOUD within 7 days.
• MOUD initiation within 7 days was associated with lower adjusted odds of overdose at 6 months (AOR, 0.63).
• Buprenorphine initiation showed a significant reduction in overdose risk at 6 months (AOR, 0.50), unlike methadone.

Conclusions:

• Initiating medication for opioid use disorder (MOUD) following a hospital visit is associated with a reduced risk of opioid overdose at 6 months.
• Healthcare systems should implement protocols to facilitate MOUD initiation for patients with OUD during hospital stays.
• Further research may explore long-term effects and specific medication impacts beyond 6 months.