Pirfenidone Effect on the Recovery of Renal Function in Patients With Septic Acute Kidney Injury

Septic acute kidney injury (AKI) is the most common cause of AKI in the world, there is no specific treatment for this pathology; the pathophysiology is related to inflammatory pathway and strategies that modulate this are potentially useful. The Pirfenidone (PDF) is an anti-fibrotic and anti-inflammatory treatment, in animal models has shown a beneficial effect on the recovery of renal function immediately after administrated. The investigators propose a triple blind clinical trial,in which septic AKI patients will be randomized in three arms, all receive conventional treatment KDIGO guides, groupPDF 1,200 will receive PDF 600mg every 12 hrs per mouth, group PDF 600 will receive 600mg in the morning and placebo equivalent at night and Group Placebo will receive placebo every 12 hrs, all for 7 days. The Investigators analyze the recovery of renal function as a primary objective, as a secondary objectives clinical variables associated with renal recovery, biochemical variables, inflammatory, molecular variables and measurement of PDF in blood will be analyzed. Patients will be follow-up for 7 days and 28 days after randomization.