Abstract 1122‐000131: Acute Ischemic Stroke Patients Receiving Reperfusion Therapy Do Not Have Worse 90‐Day Outcomes After Delirium

Introduction : Post‐stroke delirium (PSD) is associated with increased mortality and worse long‐term functional outcomes. Patients who receive reperfusion therapies in the hospital are frequently kept from regular sleep‐wake cycles the first 24 hrs after treatment, and this disruption could lead to an increase in PSD. In this study, we evaluate the effect of PSD on immediate and long‐term outcomes in AIS patients receiving reperfusion therapies. Methods : Between September 2019 and June 2021, patients diagnosed with AIS within 48 hrs of stroke onset were prospectively evaluated for PSD using the Confusion Assessment Method (CAM)‐ICU daily for the first eight days of their hospital stay. Patients with severe stroke and expected mortality within the first month at the time of admission or with severe aphasia unable to follow commands were excluded. Reperfusion therapies were defined as any IV thrombolytic, IA thrombolytic, or mechanical thrombectomy (MT). The primary outcome was considered a 90‐day mRS score of 0–2. Results : Of 179 patients assessed with the CAM‐ICU, 89 (49.7%) had PSD. We identified 94 patients that had undergone one or both reperfusion therapies; 52 (55.3%) had delirium. Patients who received tPa had a higher risk for delirium (42 vs 29, p = 0.04), but no difference was observed with MT (Table 1). Patients with PSD had a longer hospital length of stay and a higher median admission NIHSS. Patients with delirium who received tPA were more likely to be discharged to inpatient rehabilitation facilities than home (p‐value 0.004, OR 10.1 95%CI 2.1,48). No significant difference was found in 90‐day mRs scores of 0–2 in those with or without PSD. Conclusions : AIS patients with PSD after reperfusion therapy had no significant difference in 90‐day good outcomes despite having longer hospital admissions and being less likely to be discharged home. Further evaluation into how reperfusion therapies convey protection to patients is necessary.