Specialized short term crisis intervention for patients with personality disorder: Effects on coercion and length of stay.

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Acute crises in patients with personality disorders (PD) are often accompanied by suicidal and self-harming behavior. Their management is challenging, as both coercive measures and prolonged inpatient-treatment are known to be counterproductive. Only in crises that cannot be controlled by outpatient means, inpatient treatment is to be taken into account. This treatment should be time-limited and not involve coercion. The aim of this study was to assess if the introduction of a specialized crisis intervention track is associated with a reduction of coercive measures as well as a shorter in-hospital stay in PD patients. In this 8-year, hospital-wide, longitudinal, observational study, we investigated the frequency of coercive measures and the median length of in-hospital stay in 1,752 inpatient-cases with PD admitted to the Adult Psychiatry, UPK, Basel, Switzerland, between 01.01.2012 and 31.12.2019. By means of an interrupted-time-series analysis, we compared the period before and after the implementation of a specialized crisis intervention track for PD patients. Our data show a significant decrease in the median length of in-hospital stay and no significant reduction in the incidence rate of coercion among PD patients after the intervention. The latter is likely due to a floor effect, since there was a significant decrease in coercive measures over the entire observation period, already reaching very low rates before the intervention. Our study underlines the clinical importance of specialized short-term crisis management in PD, which comes along with shorter lengths of in-hospital stays and a stable low rate of coercive measure.