Clinical evidences of urea at low concentration
نویسندگان
چکیده
منابع مشابه
Urea and the clinical value of measuring blood urea concentration
Urea is the principal nitrogenous waste product of metabolism and is generated from protein breakdown. It is eliminated from the body almost exclusively by the kidneys in urine, and measurement of its concentration, first in urine and later in blood, has had clinical application in the assessment of kidney (renal) function for well over 150 years. This is the first of two articles that together...
متن کاملUrea Concentration and Haemodialysis Dose
Background. Dialysis dose is commonly defined as a clearance scaled to some measure of body size, but the toxicity of uraemic solutes is probably associated more to their concentrations than to their clearance. Methods. 619 dialysis sessions of 35 patients were modified by computer simulations targeting a constant urea clearance or a constant urea concentration. Results. Urea generation rate G ...
متن کاملUrea Excretion at Low Urine Volumes. the Calculation of "minimal" Urea Clearances.
In a previous paper (1), it was shown that the calculation of standard urea clearances from urine volumes of less than about 0.35 ml. per minute gives results which are considerably too low. It was found that the lower the urine volume is, the greater the error becomes, as the calculated standard clearance falls lower and lower. This was demonstrated in 173 adults, including patients with toxem...
متن کاملUrea and creatinine concentration, the urea: creatinine ratio
This is the second of two articles that together aim to explore current understanding of the clinical value of measuring serum/plasma urea concentration. The main focus of the first article [1] was physiological topics, such as urea production and renal processing of urea. The causes of increased and reduced plasma/serum urea concentration were also discussed. The main focus of this second arti...
متن کاملAutotrophic ammonia oxidation at low pH through urea hydrolysis.
Ammonia oxidation in laboratory liquid batch cultures of autotrophic ammonia oxidizers rarely occurs at pH values less than 7, due to ionization of ammonia and the requirement for ammonium transport rather than diffusion of ammonia. Nevertheless, there is strong evidence for autotrophic nitrification in acid soils, which may be carried out by ammonia oxidizers capable of using urea as a source ...
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ژورنال
عنوان ژورنال: International Journal of Clinical Practice
سال: 2020
ISSN: 1368-5031,1742-1241
DOI: 10.1111/ijcp.13626