09764d93_enal_Failure___Better_Medicine__Acute_Renal_Failure
[Chronic Renal Failure] A prolonged urinary tract obstruction or blockage. [Acute Renal Failure] 
Decreased blood flow to the kidneys for a period of time. This may occur from blood loss, surgery, or shock.
Overview of Renal Failure - Better Medicine
Acute Renal Failure