Macroscopic hematuria

Macroscopic hematuria refers to an increase in the amount of blood in the urine in patients with acute glomerulonephritis (AGN). Hematuria is diagnosed by the presence of visible red blood cells in fresh or concentrated urine. In the latter case, “drying” the urine leads to an increase in the concentration of hemoglobin in the urine sediment (the appearance of hemosiderin in calcium oxalate) and an increase in the concentration of blood pigment mixed with urine. With ordinary macrohematuria (“Schweinlans”) and hematurinous pyelectasis, two other signs are revealed: macroglobulus and the presence of blood cells in the urine (erythrocytes, leukocyte infiltration, fibrin in the form of a thin stalk). V.S. Salov (1961) called such a urine test for all glomerular lesions hematuria of the hyperplastic type (as opposed to the atropic type, if there are no formed blood elements in the urine). These signs are characteristic of macroscopic hematuria - a condition when the amount of blood and the diameter of its flows are observed in such quantities and volumes that the patient notes a pronounced coloring of the urine after each urination or the isolated portion containing only a small amount of urine with blood becomes almost invisible in quantity " king" or several "balls". In this case, macroscopic hematuria is regarded as microscopic (fine-grained), and the presence of bloody urine is considered a separate, accompanying anomaly.