The study is designed to evaluate the association between nosocomial bloodstream infection and the occurrence of thrombocytopenia in surgical critical ill patients.

Inclusion Criteria:

• Sequential consenting adult patients of either sex were prospectively enrolled into the study.

Exclusion Criteria:

• Patients who passed away within 24 hours after hospitalization would be excluded.

Patients who developed into a bloodstream infection within 48 hours after hospital admission were also excluded.

Sequential consenting adult patients of either sex were prospectively enrolled into the study.