Association of long-acting injectable antipsychotics with inpatient seclusion and restraint events at a public psychiatric hospital

Objective: Seclusion and restraint (S/R) are emergency safety measures to manage aggressive behaviour and prevent physical harm to self and others during psychiatric hospitalisations. Antipsychotics have been reported to reduce theincidence of S/R events during psychiatric hospitalisation. This study explores factors associated with inpatient S/R events and investigates whether long-acting injectable (LAI) antipsychotic prescription is associated with a reduction of S/R events.Method: Data on the number of S/R events during hospital stay were collected from the medical records of 741 psychiatric inpatients admitted between 2012 and 2017, and categorised into groups of 0, 1–2 and recurrent (≥3) S/R. Multinomial logistic regression analysis was performed to find the association between S/R events and several demographic and clinical variables, including the time to initiation of LAI (TLAI).Results: TLAI was not significantly associated with S/R events. Antipsychotic medication prescription was associated with a decreased risk of recurrent S/R events (OR = 0.47; 95% Cl = 0.24–0.92), however, it was not significant for the group having 1–2 S/R events (OR = 0.74; 95% Cl = 0.37–1.49). Individuals withrecurrent S/R events were more likely to have forensic admission, transfer from jail or supervised facility, higher psychiatric comorbidity, and higher inpatient medications and prescription changes.Conclusion: Early initiation of LAI antipsychotics was not associated with S/R events; however, routine oral antipsychotic medication prescription was associated with decreased risk of S/R events. Specific predictors of S/R episodesmay be used in preventative efforts aimed at decreasing S/R events.