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  • Title: [Present possibilities of improving the diagnosis of glomerular erythrocyturia].
    Author: Sasinka M, Hulíková M, Böör A, Podracká L, Filka J, Gayová E, Vargová V.
    Journal: Cesk Pediatr; 1993 Aug; 48(8):473-6. PubMed ID: 8403044.
    Abstract:
    Examination of glomerular erythrocyturia which proved useful in the differential diagnosis of haematuria faces in practice two serious problems--the necessity to examine fresh urine and differences as regards the interpretation of criteria of glomerular erythrocyturia (from 10 to 80%). The authors examined therefore the morphology of erythrocytes in urine of 65 children with different causes of haematuria, incl. 35 patients with different forms of glomerulonephritis. They found that adding 25 mg thimerasol to 10 ml urine preserves urinary elements, incl. morphologically altered red cells for a period of 72 hours or longer. This makes it possible to examine the red cells under a phase microscope after dealing with ambulatory patients. Among various morphological forms of red cells in urine of 31 patients with glomerulonephritis in urine acanthocytes were found in a concentration above 5%, and in the majority above 20%. Acanthocyturia above 5% was not present only in 4 patients with glomerulonephritis, whereby all four suffered from mild erythrocyturia. The authors consider therefore acanthocyturia above 5% as the most reliable evidence of glomerulonephritis, in case of erythrocyturia above 10 Ery in the visual field. The criteria of acanthocyturia in children are thus lower than in adults.
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