Introduction
Nosocomial infections (NI) include all infections acquired between 48
hours after hospital admission and 2 days of hospital discharge. As
everyone knows, cardiac surgical intensive care unit (ICU) is a special
ward with higher incidence of NI and usage rate of antibiotics owing to
severity of illness, complexity of surgery and common use of invasive
devices (endotracheal tubes, central venous catheters, peripheral
arterial catheters and urinary catheters) [1]. NI are associated
with increased mobidity and mortality, as well as length of ICU stay and
healthcare costs [2,3]. Furthermore, the burden of antimicrobial
resistance in ICU is growing high, which has been attributed to the
increased difficulty of clinical treament and hospital control of NI. So
treatment should be converted into organism-specific treatment from
experiential use of antibiotics as soon as possible. The aims of our
study were to investigate the characteristics of distribution of
pathogenic bacteria and antibiotics resistance of NI.