Antonio Muscari1,2, Luca Faccioli3, Maria Vittoria Lega4, Andrea Lorusso4, Marco Pastore Trossello3, Giovanni M Puddu5, Luca Spinardi3, Marco Zoli5,4. 1. Stroke Unit - Medical Department of Continuity of Care and Disability, S.Orsola-Malpighi Hospital, Bologna, Italy. antonio.muscari@unibo.it. 2. Department of Medical and Surgical Sciences, Stroke Unit, S.Orsola-Malpighi Hospital, University of Bologna, Via Albertoni, 15, 40138, Bologna, Italy. antonio.muscari@unibo.it. 3. Diagnostic and Interventional Neuroradiology Unit, S.Orsola-Malpighi Hospital, Bologna, Italy. 4. Department of Medical and Surgical Sciences, Stroke Unit, S.Orsola-Malpighi Hospital, University of Bologna, Via Albertoni, 15, 40138, Bologna, Italy. 5. Stroke Unit - Medical Department of Continuity of Care and Disability, S.Orsola-Malpighi Hospital, Bologna, Italy.
Abstract
OBJECTIVES: To produce a scoring system for predicting the development of edema in ischemic stroke patients without edema on admission. METHODS: This retrospective study included 572 ischemic stroke patients (73.3 ± 13.0 years, 300 male) without signs of cerebral edema on the first CT scan, which was performed on admission. Another scan was normally performed 3 days later, and subsequently whenever needed. Edema was defined as cerebral hypodensity with compression of lateral ventricles. The main clinical, laboratory, and instrumental variables obtained during the first 24 h were related to the appearance of edema on the CT scans performed after the first one. RESULTS: Cerebral edema occurred in 158 patients (27.6%) after a median time of 4 days. The variables independently associated with edema development were (odds ratio, 95% CI) the following: (1) total anterior circulation syndrome (4.20, 2.55-6.93; P < 0.0001), (2) hyperdense appearance of middle cerebral artery (4.12, 2.03-8.36; P = 0.0001), (3) closed eyes (2.53, 1.39-4.60; P = 0.002), (4) vomiting (3.53, 1.45-8.60; P = 0.006), (5) lacunar cerebral syndrome (0.36, 0.17-0.77; P = 0.008); and (6) white matter lesions (0.53, 0.33-0.86; P = 0.01). Counting one positive point for the first four variables and one negative point for the last two variables, a scoring system (E-score) was built. Cerebral edema could be predicted when the score was ≥ 1 (positive predictive value 61.6%, specificity 85.3%, sensitivity 62.0%). The area under the receiver operating characteristic curve was 0.78. CONCLUSIONS: In ischemic stroke patients, six variables obtained during the first 24 h of hospitalization were predictive of subsequent cerebral edema development.
OBJECTIVES: To produce a scoring system for predicting the development of edema in ischemic strokepatients without edema on admission. METHODS: This retrospective study included 572 ischemic strokepatients (73.3 ± 13.0 years, 300 male) without signs of cerebral edema on the first CT scan, which was performed on admission. Another scan was normally performed 3 days later, and subsequently whenever needed. Edema was defined as cerebral hypodensity with compression of lateral ventricles. The main clinical, laboratory, and instrumental variables obtained during the first 24 h were related to the appearance of edema on the CT scans performed after the first one. RESULTS:Cerebral edema occurred in 158 patients (27.6%) after a median time of 4 days. The variables independently associated with edema development were (odds ratio, 95% CI) the following: (1) total anterior circulation syndrome (4.20, 2.55-6.93; P < 0.0001), (2) hyperdense appearance of middle cerebral artery (4.12, 2.03-8.36; P = 0.0001), (3) closed eyes (2.53, 1.39-4.60; P = 0.002), (4) vomiting (3.53, 1.45-8.60; P = 0.006), (5) lacunar cerebral syndrome (0.36, 0.17-0.77; P = 0.008); and (6) white matter lesions (0.53, 0.33-0.86; P = 0.01). Counting one positive point for the first four variables and one negative point for the last two variables, a scoring system (E-score) was built. Cerebral edema could be predicted when the score was ≥ 1 (positive predictive value 61.6%, specificity 85.3%, sensitivity 62.0%). The area under the receiver operating characteristic curve was 0.78. CONCLUSIONS: In ischemic strokepatients, six variables obtained during the first 24 h of hospitalization were predictive of subsequent cerebral edema development.
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