Involuntary sedation of patients in the emergency department for mental health: A retrospective cohort study

Background: Involuntary sedation of agitated mental health patients in the Emergency Department (ED) is standard practice to obtain accurate medical assessments and maintain safety. However, the rate of this practice and what factors are associated with the use of involuntary sedation is unknown. The purpose of this study was to obtain baseline data on involuntary sedation in our EDs.Methods: Retrospective chart review of patients with ED visits for mental health care in 2020-2021. Patients >12 years old who received both a psychiatry consultation and involuntary sedation were included. Data variables included demographics, medical and mental health diagnoses, sedatives given, substance use, ED length of stay, and disposition. The primary outcome was repeated involuntary sedation.Results: Involuntary sedation was used in 18.8% of the mental health patients screened for study inclusion. 334 patients were included in the study cohort and 31.6% (n = 106) required repeated involuntary sedation. Their average age was 35.5 +/- 13.5 years with 58.4% men, 40.1% women, and 1.2% transgender persons. Most (90.0%, n = 299) had prior mental health diagnoses with the most common being substance use disorder (38.9%, n = 130), bipolar disorder (34.1%, n = 114), depressive disorder (29.0%, n = 97), and schizophrenia (24.3%, n = 81). Two-thirds (65.9%, n = 220) had current substance use and 41.9% (n = 142) reported current use with a chemical associated with aggression. Hospital security was called for 73.1% (n = 244). Current cocaine, methamphetamines, or alcohol use was associated with decreased odds of repeated sedation (0.52 OR, 95% CI 0.32-0.85). Prior mental health diagnosis and non-white race were associated with increased odds of repeated sedation. In the multivariable regression, the effect of race was more significant.Conclusions: Involuntary sedation was used in 18.8% of ED patients for mental health care and almost a third were repeatedly sedated, with race being a potential risk factor for repeated sedation. ED care could benefit from evidence-based interventions to reduce the need for involuntary sedation.