Feasibility and Preliminary Effects of Implementing Acceptance and Commitment Therapy for Inpatients With Psychotic-Spectrum Disorders in a Clinical Psychiatric Intensive Care Setting.

The aim of this study was to adapt Acceptance and Commitment Therapy for Inpatients (ACT-IN) for implementation in a typical hospital setting to prepare for a larger clinical trial. The sample consisted of 26 inpatients diagnosed with psychotic-spectrum disorders. Using an open trial design, patients received individual and group ACT-IN sessions during their stay. We assessed the feasibility/acceptability of ACT-IN and preliminary changes on patient outcomes at baseline, discharge, and 4-month follow-up. We successfully recruited and retained participants as planned. Patients reported satisfaction with treatment, and routine hospital staff showed adoption and fidelity to the intervention. Relative to baseline, patients demonstrated significant improvements in symptoms and functioning across the 4-month follow-up. The current study shows that ACT-IN may be feasible and acceptable for inpatients with psychotic disorders in a psychiatric intensive care setting and should be tested in a future effectiveness-implementation trial.