Abstract T P244: Risk Factors of Delirium During Acute Phase After a Stroke Screened by the Intensive Care Delirium Screening Checklist

Abstract

Background: Delirium, a well-known psychiatric syndrome occurring after a stroke, is an obstacle to rehabilitation, resulting in prolonged hospital stay. The Intensive Care Delirium Screening Checklist (ICDSC) is a simple method to help nursing staff detecting delirium. Risk factors for post-stroke delirium have been reported, but use of the ICDSC as a screening tool has rarely been reported. Purpose: This study investigated risk factors of delirium during acute phase after a stroke by using the ICDSC. Methods: We retrospectively examined 418 acute stroke patients treated in our Stroke Care Unit (SCU) between September 2011 and September 2012. Patients who died within 24 h after hospitalization and those with transient ischemic attacks, subarachnoid hemorrhage, and severe consciousness impairment were excluded. Patients were assessed usingthe ICDSC every 8 h while in the SCU. Delirium was defined as an ICDSC score > 4. Patients were divided into the delirium (those assessed as having delirium at least once) and non-delirium (those assessed as not having delirium) groups. Using univariate and multivariate logistic regression analyses, risk factors of age, sex, past medical history, consciousness level at admission, stroke onset (ischemia or hemorrhage), lesion, symptoms (hemiparesis, hemispatial neglect, or aphasia), and period of hospitalization were compared between the groups. Results: Of 310 patients ultimately included, 104 (33.5%) were included in the delirium group. Age (p=0.0456), consciousness level at admission (p<0.0001), history of stroke (p=0.0013), hemorrhagic onset (p=0.0017), suffering from aphasia (p=0.013) and period of hospitalization (p=0.0018) were independent risk factors for post-stroke delirium. Conclusions: The incidence and risk factors of delirium were similar to those previously reported. The ICDSC may be a useful and simple method for detecting delirium in the acute phase after a stroke.