Goal Direct Therapy to Prevent Acute Kidney Injury

Goal Direct Therapy to Prevent Acute Kidney Injury After Cardiac Surgery

This is an randomised controlled trial to investigate an strategy based in a protocol in prevention of acute kidney injury after cardiac surgery.

This is a prospective, randomized controlled trial to assess the influence of use of angiotensin-converting enzyme inhibitors (ACEI) and angiotensin receptor blockers (ARB) in the development of the Acute Kidney Injury in the postoperative period of cardiac surgery. Patients undergoing cardiac surgery at the Heart Institute (InCor) - Brazil, will be randomized and in accordance with a list of random numbers, generated by a computer program, will be allocated in one of the groups (GDT or standard).

Inclusion Criteria:

• Cardiac surgery with Cardiopulmonary Bypass (CPB); Age greater than 18 years; Chronic kidney disease stages 3 and 4 (GFR less than 60 mL/min and greater than 15 mL/min); Sign the informed consent form.

Exclusion Criteria:

• Chronic renal insufficiency (GFR less than 15 mL/min); Heart surgery without CPB; Aortic procedures; Heart transplant or congenital heart disease; Prior use of Intra-Aortic Balloon Pump; Decompensated heart failure; Participation in other research protocol.