Noun
accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine
Source: WordNetA normal BUN:Cr is equal to 15. citation Prerenal azotemia Prerenal azotemia is caused by a decrease in blood flow ( hypoperfusion ) to the kidneys. Source: Internet
Postrenal azotemia and hydronephrosis can be observed following the obstruction of urine flow through one or both ureters. Source: Internet
In congestive heart failure (a cause of pre-renal azotemia) or any other condition that causes poor perfusion of kidneys, the sluggish flow of glomerular filtrate results in excessive absorption of BUN and elevation of its value in blood. Source: Internet
Like in prerenal azotemia, there is no inherent renal disease. Source: Internet
Postrenal azotemia Blockage of urine flow in an area below the kidneys results in postrenal azotemia. Source: Internet
The BUN:Cr in renal azotemia is less than 15. In cases of renal disease, glomerular filtration rate decreases, so nothing gets filtered as well as it normally would. Source: Internet