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  • Title: [Mechanisms determining the occurrence of microalbuminuria in patients with acute ischemic stroke].
    Author: Turaj W, Słowik A, Szczudlik A.
    Journal: Przegl Lek; 2001; 58(10):889-93. PubMed ID: 11957814.
    Abstract:
    Microalbuminuria is more prevalent in patients with risk factors for cardiovascular diseases and reflects the widespread vascular damage predisposing to atherosclerosis. It is also found in acute clinical conditions, e.g. myocardial infarction, pancreatitis and stroke, and predicts poor outcome. The mechanism leading to increased albuminuria in these conditions is unknown, therefore we designed the study to investigate the relationship between increased urinary albumin excretion in acute stroke and biochemical markers of stress and inflammatory reaction as well as markers of endothelial damage. Sixty patients with first-time ischemic stroke, admitted within 24 hours to the stroke unit took part in the study. We excluded patients with diabetes, infection, nephropathy and abnormal urinalysis. Neurological deficit was assessed on admission and after 24 hours by Scandinavian Stroke Scale. Daily urinary albumin excretion on Day 2 was measured using the immunonephelometric method. The serum cortisol concentration was measured on Day 1 at 6.00 AM, 10.00 AM, 6.00 PM and 10.00 PM. Daily urinary excretion of epinephrine and norepinephrine was measured on Day 1 and on Day 3. We assessed also hematocrit, ESR, serum glucose and fibrinogen, leukocytosis, thrombocytosis and von Willebrand factor activity. Microalbuminuria was found in 46.7% of patients. There was no difference between patients with micro-albuminuria and those without it regarding sex, age and the prevalence of risk factors for stroke. Patients with micro-albuminuria had greater urinary excretion of epinephrine on Day 1. We did not find any differences regarding von Willebrand factor activity, serum cortisol concentration or other assessed variables. In logistic regression analysis the urinary excretion of epinephrine on Day 1 was the only independent variable predicting the occurrence of microalbuminuria in patients with acute ischemic stroke.
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