Acute kidney injury (AKI) is a serious medical condition that can happen within a few hours or a few days. It leads to a build-up of waste products in your blood. This happens because your kidneys are not able to keep the right balance of fluid in your body. This condition can affect other organs like the brain heart and lungs. This is a common condition seen in hospitalized patients especially those in intensive care units. It is also more common in older adults. Now a new study has looked into why intracerebral hemorrhage patients suffer from acute kidney injury.