Acute Renal Failure

Postrenal Acute Renal Failure

Acute renal failure (acute kidney injury) occurs when your kidneys suddenly become unable to filter waste products from your blood. When your kidneys lose their filtering ability, dangerous levels of wastes may accumulate, and your blood's chemical makeup may get out of balance.

It is not as common as intrinsic acute kidney injury (AKI) or acute tubular necrosis (ATN).
  • Symptoms
  • High urine output

    or Decreased urine


    Face swelling

    or Enlarged arms or hands

    or Enlarged feet or ankle

    or Swelling or lump in eyelid

    • Upper eyelid, Lower eyelid

    • Painless

    or Swelling in lower leg

    • In both lower legs


    Throwing up

    or Feel like vomiting




    High blood pressure


    Poor appetite


    Overweight or obese


    Cough with mucus or without mucus

  • Risk factors
  • Pelvic mass

    or Prostate hypertrophy or cancer

    or History of endometrial cancer

  • Treatment
  • Postrenal acute kidney injury, which used to be called acute renal failure, occurs when an obstruction in the urinary tract below the kidneys causes waste to build up in the kidneys.
  • Recommended specialist
  • If you have Acute Renal Failure, then a visit to a general internist is highly recommended.

    Contact a

    General internist

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