American Journal of Nephrology
Origins of Nephrology – The Modern Era
Diagnosis of Renal Disease at the Beginning of the 20th CenturyCioffi M. · Esposito L. · De Santo D. · Giannattasio P. · Cappabianca F. · Mangiacapra S. · Materiale T. · Conte G.Chair of Nephrology, Second University of Naples, Italy
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Article / Publication Details
Published online: April 23, 1999
Issue release date: March – April
Number of Print Pages: 4
Number of Figures: 0
Number of Tables: 1
ISSN: 0250-8095 (Print)
eISSN: 1421-9670 (Online)
For additional information: https://www.karger.com/AJN
Abstract
At the beginning of this century, the diagnosis of various renal diseases was made with relative accuracy although neither plasma markers of glomerular filtration nor renal biopsy nor imaging were available. Renal edema was identified by high albuminuria, hyalin cylinders, high urine density and oliguria. Renal hematuria was detected by cylinders of erythrocytes. Hallmarks of chronic renal insufficiency, recognized at autopsy by atrophic kidneys, were hyposthenuria, polyuria and slight albuminuria without edema associated with arterial hypertension, anemia, retinopathy and left ventricular hypertrophy. The detection of increased plasma volume in experimental toxic nephritis by St. Moscati proposed the underlying mechanism of arterial hypertension. Experimental and clinical research in the preinsulin era indicated the central role of the kidney in the functional alterations induced by diabetes. Indeed, glucosuria was known to appear only when glycemia was relatively high. The kidney appeared enlarged and hyperemic, i.e. the so-called glomerular hyperfiltration. Glucosuria was directly correlated with diuresis but it markedly decreased in renal insufficiency. In diabetes complicated by nephropathy, tolerance to carbohydrates improved. Correction of glucosuria by dietary treatment was followed by a prompt rise in body weight, due to retention that counterbalanced the previous losses. Diabetic ketoacidosis, determined by the measurement of urinary ketonic body excretion, was treated with sodium bicarbonate (30–50 g/day in severe acidosis) up to achieving an alkaline urine pH. It was known that high doses of sodium bicarbonate might induce edema which gradually disappeared with a reduction in the alkaline administration. Clinical significance of sodium balance was, in fact, recognized: the external NaCl balance between alimentary ingestion and urinary excretion was neutral in normal conditions and became positive at high body temperature or negative during reabsorption of exudates.
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Article / Publication Details
Published online: April 23, 1999
Issue release date: March – April
Number of Print Pages: 4
Number of Figures: 0
Number of Tables: 1
ISSN: 0250-8095 (Print)
eISSN: 1421-9670 (Online)
For additional information: https://www.karger.com/AJN
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