Goal: study of special aspects in system inflammatory reaction caused by nosocomial bacteremia in dependence of the pathogen Gram-origin. The study included 85 patients with nosocomial bacteremia in ICU from 2010 till 2012. The main inclusion criteria was bacteria identification in blood, which was taken more than 48 hours from arrival to ICU within the appearance of system inflammatory response signs. Key options for clinical rating of system inflammatory response was dynamic of patients condition according APACHE II, SOFA, SAPS-III/PIRO, Pitt scales and its correlation with durations of mechanical ventilation, length of staying in ICU, total hospital period and outcome.
Results: Gram-negative microorganisms are definitely leading in the modern ethiological structure of nosocomial bacteremia in ICU patients (64,4%). The main origin of Gram(+) agents is central venous catheter infections. The main reason of Gram(-) infections is ventilation-associated pneumonia. Appearance or persistence of system inflammatory response is associated with the rise of scale indexes (SOFA and Pitt from 5 scores and higher and SAPS-PIRO higher than 18 scores) and high risk of possible bacteremia.