Acute kidney injury following cardiac surgery.

Acute kidney injury (AKI), a recognized complication of cardiac surgery with cardiopulmonary bypass (CPB) is associated with increased morbidity and mortality (15-30%) with approximately 1% of all the affected patients requiring dialysis. Early detection of AKI would enable intervention before occurrence of irreversible injury and might minimize the morbidity and mortality. Recently developed biomarkers of AKI facilitate its earlier discovery and help assessment of its severity and prognosis. In this article, we review the causes of well-known yet inexplicable association between CPB and AKI, the advances in pathophysiologic basis, the diagnostics and the management options.