Bacterial profile and antimicrobial susceptibility pattern

Abstract number: 903_r2083

Gazi H.


Aim of this study was to determine aetiology and the antimicrobial resistance rates of bacteria causing catheter-related infections in our hospital. After removal, semiquantitative culture of the external surface and the internal lumen quantitative catheter culture was performed.


Catheter colonisation was considered if >15 CFU in the roll procedure or >1000 CFU in the quantitative.


A total of 175 catheter samples were analysed, bacterial growth was positive in 56 (32%) and negative in 119 (68%) samples. The most common isolate was Pseudomonas aeruginosa (21.4%), followed by coagulase-negative staphylococcus (CNS) (19.6%), Acinetobacter spp. (17.9%), Staphylococcus aureus (10.7%), Stenotrophomonas maltophilia (10.7%), Klebsiella spp. (5.4%), Corynebacterium spp. (3.6%), Candida spp. (3.6%), Enterococcus spp. (1.8%), Escherichia coli (1.8%), Enterobacter spp. (1.8%) and Serratia marcescens (1.8%). The prevalence of methicillin resistance was common in CNS (81.8%), compared with S. aureus (16.7%) isolates. Enterococcus spp. was not observed glycopeptide resistance. Carbapenems and aminoglycosides were the most effective antibiotics in Gram-negative bacteria.


A knowledge of the resident microbial flora and their antimicrobial susceptibility pattern is necessary for formulating a rational antibiotic policy in patients with catheter infection.


Session Details

Date: 01/08/2007
Time: 00:00-00:00
Session name: XXIst ISTH Congress
Location: Oxford, UK
Presentation type:
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