RESULTS	We noted nonsignificant differences in postoperative interventions and complications , the need for RRT ( 0.7 % vs 2.1 % ; P = .37 ) , total ( 6.1 % vs 9.6 % ; P = .26 ) and serious adverse events , hospital mortality ( 3.4 % vs 2.7 % ; P > .99 ) , and ICU and hospital length of stay between the N-acetylcysteine and placebo groups .\