Acute Kidney Failure

By definition: rise in serum Cr of >0.3 mg/dl within 48 hrs or an increase of 50% serum Cr within 7 days or urine output <0.5 ml/kg/hr for > 6hrs CAUSES - Categorized intoPRERENAL - hypotension, volume depletion (vomiting, sweating, GI loses, hemorrhage, burns), renal artery stenosis, heart failure, ischemic tubular necrosisINTRARENAL - Contrast dye tubular necrosis, NSAIDs, Glumerulonephritis, Acute interstitial nephritis, vasculitis, multiple myeloma POST RENAL - BPH, pregnancy, carcinoma, calculus, clot, stricture, neurogenic ...