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JOURNAL ARTICLE

Reduction in Estimated Glomerular Filtration Rate (eGFR) Results in an Increased Risk of Spontaneous Hemorrhagic Transformation in Patients with Large-artery Atherosclerosis Stroke

Bian Liu, Deren Wang, Zilong Hao, Dan Li, Junhuai Zhang, Junfeng Liu, Ming Liu
Current Neurovascular Research 2016, 13 (1): 75-81
26503023
The association between chronic kidney disease and spontaneous hemorrhagic transformation (HT) in patients with acute ischemic stroke is seldom reported. We performed this study to identify whether reduced estimated glomerular filtration rate (eGFR) is associated with spontaneous HT in acute ischemic stroke patients, and examine whether the association depends on stroke etiology. Patients diagnosed with acute ischemic stroke whose serum creatinine levels at admission were available were consecutively and prospectively enrolled in the Chengdu Stroke Registry Database. All were analyzed on admission by cranial computed tomography (CT) scanning, followed by regular magnetic resonance imaging (MRI) 2-3 days later and afterwards CT scan if neurological symptoms deteriorated. HT was defined based on the MRI or later CT, and eGFR was calculated using the Modification of Diet in Renal Disease equation. Univariate analysis and multivariable logistic regression were performed to determine whether reduced eGFR, defined as < 60 ml/min/1.73m2, was associated with spontaneous HT. The association was also assessed in subgroups of patients classified according to the criteria of the Trial of Org 10172 in Acute Stroke Treatment (TOAST). Of the 1,645 patients enrolled, 123 (7.5%) developed spontaneous HT and 215 (13.1%) had reduced eGFR. Reduced eGFR was significantly associated with increased risk of spontaneous HT in all ischemic stroke patients (OR 1.821, 95% CI 1.081 to 3.06, P=0.024), and in the subgroup of large artery atherosclerosis, not in the cardio-embolism stroke group (OR 1.588, 95% CI 0.642 to 3.782, P=0.327). Reduced eGFR did not increase the risk of symptomatic hemorrhagic transformation (OR 0.937, 95%CI 0.247 to 3.577, P=0.924). In conclusion, reduced eGFR was significantly associated with increased risk of spontaneous HT in all ischemic stroke patients, and in large artery atherosclerosis, not in cardio-embolism stroke. Reduced eGFR did not increase the risk of symptomatic HT.

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