Urinary NGAL Acute Kidney Injury After Stored Red Blood Cells Transfusion in Critically Ill Patients.

The Association of NGAL With the Development of Acute Kidney Injury After Stored Red Blood Cells Transfusion in Critically Ill Patients.

The study aims to explore the association of the novel urinary bio marker NGAL with the age of PRBCs(packed red blood cells) transfusion in critically ill patients.

The investigators will measure the urinary NGAL in all patients who received blood transfusion in the intensive care unit during the study period. The age of PRBCs transfusion will be correlated with the incidence of AKI. The rise of NGAL and serum creatinine will be used to diagnose AKI (Acute Kidney Injury).

Inclusion Criteria:

• Any patients admitted to the intensive care unit.

Exclusion Criteria:

• patients who have established AKI at the time of recruitment