Levels of engagement among office-based opioid treatment (OBOT) patients with concurrent methamphetamine use.

BACKGROUND AND OBJECTIVES: Recent increases in methamphetamine use among people seeking treatment for opioid use disorder (OUD) has created significant demand for effective approaches to support this clinical population. This study assessed the extent to which office-based opioid treatment (OBOT) patients, who were diagnosed with methamphetamine use disorder (MUD), engaged with providers. METHODS: A retrospective analysis was conducted of adult patients (n = 470) seeking treatment for OUD who attended at least one visit between March 2020 and March 2023 at a rural regional OBOT provider. Approximately one quarter (28.7%) of patients were diagnosed with MUD in addition to receiving an OUD diagnosis. Bivariate methods and multivariate negative binomial regression models were estimated to examine the associations between clinical measures and the numbers of office visits, peer visits, and telehealth visits. RESULTS: Regression results indicated patients who met criteria for MUD in addition to OUD attended a higher rate of peer visits (incidence rate ratio [IRR] = 2.63, p = .036) when compared to patients who did not meet criteria for MUD. In contrast, patients with MUD and OUD diagnoses displayed significantly lower (IRR = 0.68, p < .001) engagement rates through fewer office visits relative to those who did not meet MUD criteria. DISCUSSION AND CONCLUSIONS: Patients seeking treatment for OUD who meet criteria for MUD are more likely to engage through peer support specialists rather than office visits. SCIENTIFIC SIGNIFICANCE: This study demonstrates the ways patients who meet criteria for OUD and MUD engage with providers to receive treatment.

Acute Psychosis Following 1,1-Difluoroethane Inhalation.

Inhalants are often abused due to their ability to acutely induce feelings of euphoria. Difluoroethane is a toxic lipophilic hydrocarbon that crosses the blood-brain barrier and inhibits the central nervous system. Studies have shown the cardiac, renal, and respiratory effects it has when abused; however, our literature review yielded no previous report of acute psychosis after difluoroethane inhalation. In order to prevent poor outcomes by missed diagnosis, we present a case of difluoroethane-induced acute psychosis.