Answer 31

31.  Choice A is the correct answer.  While urosepsis can lead to acute renal failure it is not considered to be an intrinsic cause of renal failure.  The renal failure associated with urosepsis comes from volume depletion and hypoperfusion of the kidney, and therefore a pre-renal cause.  Vasculitis, acute interstitial nephritis, and acute necrosis are considered intrinsic causes.