ABSTRACT
DEFINITION ■ Acute renal failure (ARF) is an increase in the serum level
of creatinine of 0.5 mg/dL daily or BUN of 10 mg/dL daily over several days, with a decrease in glomerular filtration rate.
■ Pseudoacute renal failure can occur when there is an increase in creatinine or BUN without a decrease in the glomerular filtration rate. ▲ Increased creatinine-increase in protein intake, part of
rhabdomyolysis, trimethoprim, cefoxitin, flucytosine. ▲ Increased BUN-gastrointestinal tract bleeding, tissue
trauma, glucocorticoids, tetracycline.
