Acute Kidney Injury (AKI), also known as Acute Renal Failure (ARF) takes place when kidneys suddenly are unable to filter waste from the blood. It can develop quite rapidly from many causes. This can occur because of infection, medications, low blood pressure, and many other causes. The sudden injury to kidney function will result to build-up of waste products in your blood and makes it hard for your kidneys to keep the right balance of fluid in your body, which can occur in a matter of hours or even days. To effectively treat the kidney injury and prevent further damage, we must identify and remove the underlying cause.