Frequency of Persistent Opioid Use 6 Months After Exposure to IV Opioids in the Emergency Department: A Prospective Cohort Study.

Background: As rates of opioid use disorder in the general population have increased, some have questioned whether IV opioids should be used routinely for treatment of acute severe pain in the emergency department (ED).

Objectives: We determined the incidence of persistent opioid use among opioid-naïve patients exposed to IV opioids in the ED.

Methods: This was a prospective observational cohort study conducted in two EDs in the Bronx, NY. Opioid-naïve adults with severe pain who received IV opioids in the ED were followed-up 6 months later by telephone interview and review of the state opioid prescription database. We defined persistent opioid use as filling 6 or more prescriptions for opioids in the 6 months following the ED visit or an average of one prescription per month.

Results: We screened 1555 patients. Of these, 506 patients met entry criteria and provided analyzable data. Morphine was the IV opioid most frequently administered in the ED (478, 94%), followed by hydromorphone (20, 4%). Of the 506, 8 (2%) received both IV morphine and hydromorphone and 63 (12%) participants were prescribed an opioid for use after the ED visit. One patient/506 (0%) met our apriori criteria for persistent opioid use within 6 months.

Conclusion: Among 506 opioid naïve ED patients administered IV opioids for acute severe pain, only one used opioids persistently during the subsequent 6 months.