CLINICAL VIEW ON SUBSTANCE-INDUCED PSYCHOTIC SYMPTOMS IN A MEDICALLY SUPERVISED INJECTING ROOM: A DECADE OF EXPERIENCE

Abstract

Introduction. Medically supervised injecting rooms (MSIRs) are extremely important facilities for people who inject drugs (PWID) as MSIRs provide a safe place for the consumption of street-sourced drugs, impacting overdose rates and viral transmitted infections.

Methods. The current paper describes more than 10 years of our MSIR experience regarding psychotic symptoms and their relationship with the substance used. The analysis was performed using data collected between 01/01/2009 and 08/31/2021.

Results. 3731 self-injections (68.7% heroin, 29.1% cocaine, 2.1% speedball, and 0.2% other substance) were recorded during the studied period. Psychotic symptoms were only observed in 7.1% of the total self-injections.

However, large differences were detected among substances: 23.2% of cocaine consumptions were related to psychotic symptoms, 20.8% of speedball injections presented psychotic symptoms, and only 0.3% of heroin consumptions had psychotic symptoms (X2 =604.99; p<0.001). Also, some other variables highlight that psychotic symptoms induced by substances may be associated with higher clinical severity.

Conclusions. subjects with cocaine or speedball use who attend MSIRs may present substance-induced psychotic symptoms, having higher clinical severity. Thus, MSIRs’ protocols should be analyzed and adapted in terms of the substance used and the induction of psychotic symptoms. Moreover, further research is necessary on this critical issue.