Preoperative renal dysfunction was characterized according to a creatinine clearance lower than 70 mL.min.
La disfunción renal preoperatoria se estandarizó teniendo en cuenta el clearance de creatinina inferior a 70 mL.min.
A disfunção renal pré-operatória foi caracterizada levandose em conta clearance de creatinina inferior a 70 mL.min.