Presence of pelvic and liver injury on arrival in ED, gastrointestinal tract perforation and massive transfusion within the first 24 hours after trauma appear a significant risk factor for bacteremia. Scoring with the ISS, intra-abdominal and pelvic injury and presence of transfusion and shock at admission to ED appears a useful tool for identifying trauma patients at increased risk of bacteremia.

Purpose: Bacteremia is a major nosocomial infection problem in view of its high mortality. Bacteremia occurs in trauma patients frequently and increases a morbidity and mortality. The aim of this study was to identify risk factors and to describe epidemiological patterns for early onset (EOB) and late onset (LOB) bacteremia after trauma.

Methods: All trauma patients admitted to surgical intensive care unit (SICU) and general ward (GW) from January 2011 to December 2015 were retrospectively enrolled. The following information was collected for each patient and recorded in a computer database: demography, severity of trauma according to the Injury Severity Score (ISS) and each abbreviated injury score (AIS), severity of coma according to the Glasgow Coma Scale (GCS), presence of shock and transfusion. Early onset bacteremia was defined as EOB when onset occurred within 7 days after trauma, and late onset bacteremia was defined as LOB when appearing after 7 days from trauma.

Inclusion Criteria:

• The patients who admitted to intensive care unit (ICU) or general ward (GW) through the emergency department after trauma were studied

Exclusion Criteria:

• Patients who arrived on dead-on arrival

Patients admitted to Asan Medical Center with trauma from January 2011 to December 2015