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Related to prerenal azotemia: postrenal azotemia
non·re·nal az·o·te·mi·a, prerenal azotemia
nitrogen retention resulting from something other than primary renal disease.
prerenal azotemiaRenal underperfusion Nephrology The most common form of acute renal failure, characterized by ↑ nitrogenous waste, due to ↓ blood flow to the kidney Lab ↑ nitrogenous wastes–eg, creatinine and urea, which act as poisons when they accumulate in the body, damaging tissues and compromising organ function Risk factors ↓ blood volume–eg, dehydration, prolonged vomiting, diarrhea, bleeding, burns, etc; pump failure–eg, CHF, shock, kidney trauma or surgery, renal artery embolism, and other types of renal artery occlusion. See Renal failure.
an excess of nitrogen-containing compounds in the blood. See also uremia.
is caused by reduced renal blood flow caused by increased pressure within the renal collecting system, e.g. hydronephrosis and urine retention from a variety of causes.
is due to extrarenal causes that reduce renal blood flow and glomerular filtration, e.g. dehydration, shock, reduced cardiac output, decreased plasma albumin osmotic pressure.
primary renal azotemia
results from loss of renal functional parenchyma.