Biomaterial Database

Nitrogen balance studies in clinical nutrition. 1992

F N Konstantinides

Nutrition support is recognized as an important cofactor in altering morbidity and mortality of hospitalized patients. Paramount in delivering proper nutrition support is the accurate determination of baseline metabolic and nutritional status, thus influencing necessary protein requirements. After nutritional intervention, routine laboratory monitoring is used to measure the efficacy and to reassess metabolic stress level. Accurate determination of nitrogen excretion (and nitrogen balance) remains the standard in prescribing and monitoring the protein and nutritional treatment regimen. This article examines nitrogen excretion determinations in the clinical setting, including proper collection techniques, laboratory measurements, and analyses and their effect upon nitrogen balance studies.

UI	MeSH Term	Description	Entries
D009584	Nitrogen	An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
D009751	Nutritional Requirements	The amounts of various substances in food needed by an organism to sustain healthy life.	Dietary Requirements,Nutrition Requirements,Dietary Requirement,Nutrition Requirement,Nutritional Requirement,Requirement, Dietary,Requirement, Nutrition,Requirement, Nutritional,Requirements, Dietary,Requirements, Nutrition,Requirements, Nutritional
D001806	Blood Urea Nitrogen	The urea concentration of the blood stated in terms of nitrogen content. Serum (plasma) urea nitrogen is approximately 12% higher than blood urea nitrogen concentration because of the greater protein content of red blood cells. Increases in blood or serum urea nitrogen are referred to as azotemia and may have prerenal, renal, or postrenal causes. (From Saunders Dictionary & Encyclopedia of Laboratory Medicine and Technology, 1984)	BUN,Nitrogen, Blood Urea,Urea Nitrogen, Blood
D001827	Body Height	The distance from the sole to the crown of the head with body standing on a flat surface and fully extended.	Body Heights,Height, Body,Heights, Body
D003404	Creatinine		Creatinine Sulfate Salt,Krebiozen,Salt, Creatinine Sulfate,Sulfate Salt, Creatinine
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013048	Specimen Handling	Procedures for collecting, preserving, and transporting of specimens sufficiently stable to provide accurate and precise results suitable for clinical interpretation.	Specimen Collection,Collection, Specimen,Collections, Specimen,Handling, Specimen,Handlings, Specimen,Specimen Collections,Specimen Handlings
D014508	Urea	A compound formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids.	Basodexan,Carbamide,Carmol
D015596	Nutrition Assessment	Evaluation and measurement of nutritional variables in order to assess the level of nutrition or the NUTRITIONAL STATUS of the individual. NUTRITION SURVEYS may be used in making the assessment.	Prognostic Nutritional Index (PNI),Assessment, Nutrition,Mini Nutrition Assessment,Mini Nutritional Assessment,Nutrition Assessments,Nutrition Index,Nutrition Indexes,Nutrition Indices,Nutritional Assessment,Nutritional Index,Prognostic Nutritional Index,Assessment, Mini Nutrition,Assessment, Mini Nutritional,Assessment, Nutritional,Assessments, Mini Nutrition,Assessments, Mini Nutritional,Assessments, Nutrition,Assessments, Nutritional,Index, Nutrition,Index, Nutritional,Index, Prognostic Nutritional,Index, Prognostic Nutritional (PNI),Indexes, Nutrition,Indices, Nutrition,Indices, Nutritional,Indices, Prognostic Nutritional,Indices, Prognostic Nutritional (PNI),Mini Nutrition Assessments,Mini Nutritional Assessments,Nutrition Assessment, Mini,Nutrition Assessments, Mini,Nutritional Assessment, Mini,Nutritional Assessments,Nutritional Assessments, Mini,Nutritional Index, Prognostic,Nutritional Index, Prognostic (PNI),Nutritional Indices,Nutritional Indices, Prognostic,Nutritional Indices, Prognostic (PNI),Prognostic Nutritional Indices,Prognostic Nutritional Indices (PNI)