Impact of surgical site infections on cost of illness and length of stay in a teaching hospital

Results: From January 2011 to March 2014, a total of 75 (2.5%) isolates of P. aeruginosa were obtained from 3059 samples. Thirty-one isolates were in zone A, 25 in zone B, 14 in zone C, and 5 in ICUs. PFGE analysis revealed 7 genotypes (GTs) including 64 isolates of GT-A, 4 of GT-B, 1 of GT-C, 3 of GT-D, 1 of GT-E, 1 of GT-F, and 1 of GT-G (Figure). None had the same GT with those obtained from clinical P. aeruginosa bacteremia by PFGE analysis. No common source of the major strain of P. aeruginosa was identified by risk factor analysis. Conclusions: Colonization of P. aeruginosa was identified. Complying with the guideline of disinfection of HD machine and regular sampling of HD are important.