The signs of internal disease, with a brief consideration of the principal symptoms thereof . Fig- 75—Hand Centrifuge. It is difficult to satisfactorily classify! the two groups, of sub-stances which make up the urinary sediment. Organized and unor-ganized are terms frequently used, but unorganized does not in thiscase mean non-organic and is misleading. Perhaps the division intochcmic and histologic sediments is as useful as any. The chcmic substances are acid, the urates, phosphates, cal-cium iixalate, cystin, leucin, tyrosin, melanin. The sediments of acid and alkaline urine difEer ma
The signs of internal disease, with a brief consideration of the principal symptoms thereof . Fig- 75—Hand Centrifuge. It is difficult to satisfactorily classify! the two groups, of sub-stances which make up the urinary sediment. Organized and unor-ganized are terms frequently used, but unorganized does not in thiscase mean non-organic and is misleading. Perhaps the division intochcmic and histologic sediments is as useful as any. The chcmic substances are acid, the urates, phosphates, cal-cium iixalate, cystin, leucin, tyrosin, melanin. The sediments of acid and alkaline urine difEer markedly. Acidiirine may deposit: (a) uric acid; (b) acid-urates of sodium, potas-sium, ammonium and calcium; (c) calcium oxalate; and occasionally,(d) hippuric acid; (e) calcium sulphate, cystine, leucin, PLATE CRYSTALS. fNatural color.) EXAMINATION OP THE UEINE 327 In such urine the uric acid and the calcium oxalate are crystalline, theurates amorphous or granular, except sodium urate which is sometimescrystalline. Alkaline urine may deposit: (a) amorphous phosphate and car-bonate of calcium; (b) crystalline urate of ammonium; (c) phosphateof calcium and magnesium; (d) triple phosphates. The most important constituent of the alkaline sediment is theamorphous earthy phosphates which are regularly precipitated inurine that is alkaline when voided, as well as in urine that has under-gone fermentation. The crystalline forms are^ the triple phosphates,ammonium urate, calcium phoophate and carbonate, and, under path-ologic conditions, leucin, tyrosin and cystin. TJric acid crystals occur as a deposit only- in acid urine. Theyare deep-red or yellow in color, prone to cling to the sides of the ves-sel and can be recognized by the trained eye. Cubes, plates andrhombic crystals,
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdiagnos, bookyear1906
