Low Serum Creatinine as a Predictor of Prolonged Mechanical Ventilation and Weaning Failure

The main objective of the study is to determine whether a subnormal serum creatinine value upon admission to the Post-ICU Care Unit predicts the need for prolonged ventilatory support. A parallel objective of the study is to determine whether exogenous in-take of the dietary supplement creatine in patients with subnormal serum creatinine value is associated with a shortened duration of ventilatory support and improved patients outcome.