Renal Replacement Therapy and In-Hospital Mortality Incidence in Cardiac Surgery Associated Acute Kidney Injury

The goal of this study is to analyse the relation of severe acute kidney injury post cardiac surgery which characterised by the need of renal replacement therapy, with in-hospital postoperative mortality incidence. The main question it aims to answer: To compare between patients complicated with acute kidney injury and exposure of renal replacement therapy (AKI-RRT) and patients complicated with acute kidney injury which does not require renal replacement therapy, in associated with in-hospital postoperative mortality.