Risk factors for continuous renal replacement therapy after surgical repair of type A aortic dissection

Previous studies have reported a high incidence of acute kidney injury (AKI) after cardiothoracic surgery (1-3). It is associated with increased short-term mortality, morbidity, and prolonged intensive care unit stay, especially in patients who required renal replacement therapy (4,5). The incidence of AKI after aortic surgery has been reported to approximate 50% (1,6). Although mild to moderate acute kidney injuries are common, 2–15% of patients with AKI require continuous renal replacement therapy (CRRT) after aortic surgery (6-10). Despite continued progress in intensive care and renal replacement techniques in recent years, the short-term mortality remains high, ranging from 50% to over 80% in patients undergoing CRRT (5,7,11)