Essentials of practice of medicine : arranged in the form of questions and answers, prepared especially for students of medicine . duced into orcomposing the body. How much urea is excreted under normal conditions daily ? 500 grains, or about 30 grammes, which, however, may vary ac-cording to the character of the ingested food. How may the urea be separated and demonstrated from theurine ? By acidulating the condensed urine either with nitric or oxalicacid, and allowing the nitrate or oxalate of urea to crystallize from this- NORMAL ORGANIC CONSTITUENTS OP URINE. 23 Under which pathological co
Essentials of practice of medicine : arranged in the form of questions and answers, prepared especially for students of medicine . duced into orcomposing the body. How much urea is excreted under normal conditions daily ? 500 grains, or about 30 grammes, which, however, may vary ac-cording to the character of the ingested food. How may the urea be separated and demonstrated from theurine ? By acidulating the condensed urine either with nitric or oxalicacid, and allowing the nitrate or oxalate of urea to crystallize from this- NORMAL ORGANIC CONSTITUENTS OP URINE. 23 Under which pathological conditions is the elimination ofurea increased ? In febrile conditions which do not suppress the renal action. Thus,it is increased in meningitis, typhoid fever, smallpox, erysipelas, in-termittent fevers, pneumonia, pleurisy, articular rheumatism withendocarditis, etc. What pathological conditions diminish the urea in urine ? A diminished nutrition, especially of albuminoids, processes ofsulfoxidation, such as emphysema, valvular disease of the heart anddisturbances of the circulation, in which the amount of urea pro- FlG. a, urea; 6, rhombic, and c, hexagonal plates of urea nitrate. duced is less; in other diseases, such as ascites and anasarca, the ureais not secreted, though produced, and is withheld in the circulation;also in cholera and diseases characterized by renal inaction, when withan amelioration the urea reappears. The wasting diseases, such asanrcinia, leucocythaemia, phthisis, acute yellow atrophy, etc., arealso accompanied by a diminished amount of urea in the urea ever exist as a sediment in urine ?On account of its ready solubility it can never exist as such. How can urea he recognized under the microscope ? By evaporating a drop of urine cautiously on a slide, when, witha low power, the rhombic prisms of urea may be readily recognized(Fig. 2). 24 EXAMINATION OF URINE. How may the oxalate or nitrate of urea be prepared? By acidulating condensed uri
Size: 1719px × 1454px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectclinicalmedic, booksubjecturinalysis
