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

Inclusion Criteria: * Patients \<18 years of age * Patients admitted to post-ICU care units at Chronicare Group a.s. in the Czech Republic within 12 months Exclusion Criteria: * Patients who are unlikely to be weaned from ventilatory support. * Patients in palliative care or with a survival probability of \<3 months * Patients with advanced malignancy * Patients with a history of chronic kidney disease * Patients with a history of chronic liver disease * Patients with supranormal serum creatinine on admission to the post-ICU care unit * Patients who refused to sign the Informed Consent with participation in the study.