[Functional furosemide loading test. Practical use in children with kidney diseases].

Diuretic and aciduretic reactions were compared in healthy children and children with various renal diseases using furosemide loading test. Diuresis, urinary pH, urinary excretion of titered acids and ammonium, and ammonium coefficient were evaluated in healthy controls, patients with chronic and acute renal insufficiency, convalescents after acute renal insufficiency and acute postinfection glomerulonephritis, patients with chronic pyelonephritis, interstitial nephritis, lipoid nephrosis, hematuric chronic glomerulonephritis, and patients with a solitary kidney. Diuresis, urinary pH, ammonium excretion, and ammonium coefficient are proposed as the main test parameters. Patients with the distal tubular acidosis syndrome formed a special group by the results of urinary pH measurements during the third hour of furosemide action. The test helps evaluate the severity of disease and predict its course.