Ronen R Leker1, Pavel Gavriliuc2, Nour Eddine Yaghmour2, John M Gomori3, Jose E Cohen4. 1. Department of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel. Electronic address: leker@hadassah.org.il. 2. Department of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel. 3. Department of Radiology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel. 4. Department of Neurosurgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
Abstract
INTRODUCTION: Most studies evaluating endovascular therapy (EVT) for stroke only included patients without pre-existing disabilities. However, in real life many patients have pre-existing disabilities, and whether they can benefit from EVT remains unknown. METHODS: Patients with emergent large vessel occlusions undergoing EVT were prospectively enrolled. Patients with no or mild pre-existing disabilities (modified Rankin Scale [mRS], 0-2) were compared with patients presenting with pre-existing moderate disability (mRS ≥ 3). Baseline demographics and risk factors, stroke severity (studied with the National Institutes of Health Stroke Scale [NIHSS]), imaging data including pretreatment Alberta Stroke Program Early Computerized Tomography Score (ASPECTS) and ASPECTS collateral scores, as well as procedure-related variables were accrued. Unfavorable outcome was defined as mRS ≥ 4 at day 90. RESULTS: Of 131 enrolled patients, 108 had a baseline mRS of 2 or lower, and 23 had a prestroke mRS score of 3 or higher. Patients with pre-existing mRS scores of 3 or higher were significantly older (80.3 ± 10 versus 66.9 ± 13.7; P = .001) and more often had previous strokes (39% versus 16%; P = .02). Patients with mRS scores of 3 or higher were more likely to have poor outcomes or death (odds ratio [OR], 4.4; 95% confidence interval [CI], 1.3-15.0). Of the 23 patients with pre-existing moderate disability, 8 (35%) maintained their previous degree of disability. On multivariate analysis, age (OR, .92; 95% CI, .88-.97; P = .001), admission NIHSS (OR, .92; 95% CI, .85-.99; P = .042) and pretreatment ASPECTS (OR, 6.4; 95% CI, 1.4-29.5; P = .017) remained significant modifiers of favorable outcome. DISCUSSION AND CONCLUSIONS: Patients with pre-existing moderate disabilities have higher chances of sustaining unfavorable outcomes despite EVT. Nevertheless, some patients maintain the same level of moderate disabilities, and therefore, patients with pre-existing moderate disabilities should not be excluded from EVT.
INTRODUCTION: Most studies evaluating endovascular therapy (EVT) for stroke only included patients without pre-existing disabilities. However, in real life many patients have pre-existing disabilities, and whether they can benefit from EVT remains unknown. METHODS:Patients with emergent large vessel occlusions undergoing EVT were prospectively enrolled. Patients with no or mild pre-existing disabilities (modified Rankin Scale [mRS], 0-2) were compared with patients presenting with pre-existing moderate disability (mRS ≥ 3). Baseline demographics and risk factors, stroke severity (studied with the National Institutes of Health Stroke Scale [NIHSS]), imaging data including pretreatment Alberta Stroke Program Early Computerized Tomography Score (ASPECTS) and ASPECTS collateral scores, as well as procedure-related variables were accrued. Unfavorable outcome was defined as mRS ≥ 4 at day 90. RESULTS: Of 131 enrolled patients, 108 had a baseline mRS of 2 or lower, and 23 had a prestroke mRS score of 3 or higher. Patients with pre-existing mRS scores of 3 or higher were significantly older (80.3 ± 10 versus 66.9 ± 13.7; P = .001) and more often had previous strokes (39% versus 16%; P = .02). Patients with mRS scores of 3 or higher were more likely to have poor outcomes or death (odds ratio [OR], 4.4; 95% confidence interval [CI], 1.3-15.0). Of the 23 patients with pre-existing moderate disability, 8 (35%) maintained their previous degree of disability. On multivariate analysis, age (OR, .92; 95% CI, .88-.97; P = .001), admission NIHSS (OR, .92; 95% CI, .85-.99; P = .042) and pretreatment ASPECTS (OR, 6.4; 95% CI, 1.4-29.5; P = .017) remained significant modifiers of favorable outcome. DISCUSSION AND CONCLUSIONS:Patients with pre-existing moderate disabilities have higher chances of sustaining unfavorable outcomes despite EVT. Nevertheless, some patients maintain the same level of moderate disabilities, and therefore, patients with pre-existing moderate disabilities should not be excluded from EVT.
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