Acute kidney injury (AKI), which is also referred to as acute renal failure (ARF), is when your kidneys suddenly stop working properly. It can range from a minor loss to a complete loss of kidney function. In acute kidney injury, the kidneys are not able to effectively remove waste products from your blood and have difficulty maintaining the right balance of salt, acidity and fluid in your body. This will affect the normal functioning of other organs, such as the brain, heart, and lungs.
Chronic kidney disease is different from acute kidney injury, in which there is a gradual loss of kidney function over a long period of time, and the causes might not be as noticeable.