Acute Kidney Injury, previously known as Acute Renal Failure, is a sudden decrease in a person’s kidney function which develops within 7 days. It is also a clinical syndrome which complicates and worsens the outcomes easily in a significant number of hospitalised patients. The disease, a sudden episode of kidney failure or kidney damage, which creates interruption in the functions of the kidneys where your kidneys become unable to filter waste products from your blood.