Predictors of Early versus Delayed Neurological Deterioration after Thrombolysis for Ischemic Stroke

Author:

Han Qiao,You Shoujiang,Maeda Toshiki,Wang Yanan,Ouyang Menglu,Li Qiang,Song Lili,Zhao Yang,Ren Xinwen,Chen Chen,Delcourt Candice,Zhou Zien,Cao Yongjun,Liu Chun-Feng,Zheng Danni,Arima Hisatomi,Robinson Thompson G.,Chen Xiaoying,Lindley Richard I.,Chalmers John,Anderson Craig S.,Wang Xia

Abstract

<b><i>Introduction:</i></b> We aimed to determine predictors of early (END) and delayed neurological deterioration (DND) and their association with the functional outcome in patients with acute ischemic stroke (AIS) who participated in the international Enhanced Control of Hypertension and Thrombolysis Stroke Study (ENCHANTED). <b><i>Methods:</i></b> END and DND (without END) were defined as scores of a ≥2-point increase on the National Institutes of Health Stroke Scale (NIHSS) or a ≥1-point decrease on the Glasgow coma scale or death, from baseline to 24 h and 24–72 h, respectively. Multivariable logistic regression models were used to determine independent predictors of END and DND and their association with 90-day outcomes (dichotomous scores on the modified Rankin scale [mRS] of 2–6 vs. 0–1 and 3–6 vs. 0–2 and death). <b><i>Results:</i></b> Of 4,496 patients, 871 (19.4%) and 302 (8.4%) patients experienced END and DND, respectively. Higher baseline NIHSS score, older age, large-artery occlusion due to significant atheroma, cardioembolic stroke subtype, hemorrhagic infarction and parenchymatous hematoma within 24 h were all independent predictors for both END (all <i>p</i> ≤ 0.01) and DND (all <i>p</i> ≤ 0.024). Moreover, higher baseline systolic blood pressure (BP) (odds ratio [OR] 1.07, 95% confidence interval [CI] 1.02–1.12), higher diastolic BP variability within 24 h (OR 1.07, 95% CI 1.04–1.09), patients from Asia (OR 1.25, 95% CI 1.03–1.52) were the only independent predictors for END. However, Asian ethnicity was negatively associated with DND (OR 0.64, 95% CI 0.47–0.86). Hemorrhagic infarction and parenchymatous hematoma within 24 h were the key predictors of END across all stroke subtypes. END and DND were all associated with a poor functional outcome at 90 days (all <i>p</i> &lt; 0.001). <b><i>Conclusion:</i></b> We identified overlapping and unique demographic and clinical predictors of END and DND after thrombolysis for AIS. Both END and DND predict unfavorable outcomes at 90 days.

Publisher

S. Karger AG

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