Prognostic outcome of intravenous thrombolysis in elderly patients aged ≥ 60 years with acute ischemic stroke by ASTRAL and THRIVE scales.

This study aimed to validate the predictive performance of ASTRAL and THRIVE scales when used for patients aged 60 years and older with acute ischemic stroke (AIS) after intravenous thrombolysis (IVT). All enrolled patients received IVT therapy. The enrolled patients were divided into two groups in accordance with the modified Rankin scale(mRS) score at the time of discharge: good-outcome (mRS ≤ 2) and poor-outcome (mRS ≥ 3) groups. The receiver operating characteristic (ROC) curve was plotted using MedCalc software, the area under the ROC curve (AUC) was calculated. The Delong test was used to compare the predictive performance of ASTRAL and THRIVE scales, with P < 0.05 being considered a statistically significant difference. The AUCs of ASTRAL and THRIVE in predicting poor outcomes after thrombolysis in elderly patients with AIS were 0.771 and 0.701, respectively. The difference in AUC between ASTRAL and THRIVE was 0.070, and a statistically significant difference (P < 0.05) was found. ASTRAL's predictive performance was better than that of THRIVE. ASTRAL is a reliable predictive tool for assessing the poor outcome of IVT therapy for elderly patients aged ≥ 60 years with AIS.