Antibiotic Susceptibility of Clinical Isolates of Pseudomonas Aeruginosa

Ongoing surveillance of Pseudomonas aeruginosa resistance against antimicrobial agents is fundamental to monitor trends in its susceptibility patterns and to appropriately guide clinicians in choosing empirical or directed therapy. The current in vitro activity level of eight antimicrobial drugs...

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Main Author: Siva Gowri Pathmanathan
Format: Research Report
Language:English
Published: Universiti Sains Islam Malaysia 2011
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Online Access:http://ddms.usim.edu.my/handle/123456789/4100
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spelling my.usim-41002012-12-14T07:26:52Z Antibiotic Susceptibility of Clinical Isolates of Pseudomonas Aeruginosa Siva Gowri Pathmanathan Drug Resistance, Microbial Ongoing surveillance of Pseudomonas aeruginosa resistance against antimicrobial agents is fundamental to monitor trends in its susceptibility patterns and to appropriately guide clinicians in choosing empirical or directed therapy. The current in vitro activity level of eight antimicrobial drugs was assessed against 97 clinical isolates of P. aeruginosa collected consecutively for three months in 2007 from a Malaysian hospital. Antimicrobial susceptibility was determined using the Etest method subsequent to the hospital's routine diagnostic testing by the disk diffusion method. Respiratory isolates, followed by wound swab isolates were the most frequently encountered. The Etest and disk diffusion methods showed high agreement in determining the in vitro activity of the antimicrobial agents on the P. aeruginosa isolates. Etest results showed piperacillin-tazobactam was the most active antimicrobial agent with 91.8% susceptibility, followed by the aminoglycosides (amikacin, 86.6% and gentamicin, 84.5%), the quinolone (ciprofloxacin, 83.5%) and the beta-lactams (cefepime, 80.4%, ceftazidime, 80.4%, imipenem, 79.4% and meropenem, 77.3%). Incidence of multidrug-resistance was 19.6% (19 out of 97 isolates). The higher resistance rate in general as compared to previous studies call for prudent use of antibiotics in order to limit further increase in resistance. Periodical surveillance of antibiotic resistance is fundamental to monitor changes in susceptibility patterns in a hospital setting. A standard definition of Pseudomonas aeruginosa multidrug resistance is crucially needed to allow better comparisons between studies. 2011-03-15T07:02:27Z 2011-03-15T07:02:27Z 2009 Research Report http://ddms.usim.edu.my/handle/123456789/4100 en Universiti Sains Islam Malaysia
institution Universiti Sains Islam Malaysia
building USIM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universit Sains Islam i Malaysia
content_source USIM Institutional Repository
url_provider http://ddms.usim.edu.my/
language English
topic Drug Resistance, Microbial
spellingShingle Drug Resistance, Microbial
Siva Gowri Pathmanathan
Antibiotic Susceptibility of Clinical Isolates of Pseudomonas Aeruginosa
description Ongoing surveillance of Pseudomonas aeruginosa resistance against antimicrobial agents is fundamental to monitor trends in its susceptibility patterns and to appropriately guide clinicians in choosing empirical or directed therapy. The current in vitro activity level of eight antimicrobial drugs was assessed against 97 clinical isolates of P. aeruginosa collected consecutively for three months in 2007 from a Malaysian hospital. Antimicrobial susceptibility was determined using the Etest method subsequent to the hospital's routine diagnostic testing by the disk diffusion method. Respiratory isolates, followed by wound swab isolates were the most frequently encountered. The Etest and disk diffusion methods showed high agreement in determining the in vitro activity of the antimicrobial agents on the P. aeruginosa isolates. Etest results showed piperacillin-tazobactam was the most active antimicrobial agent with 91.8% susceptibility, followed by the aminoglycosides (amikacin, 86.6% and gentamicin, 84.5%), the quinolone (ciprofloxacin, 83.5%) and the beta-lactams (cefepime, 80.4%, ceftazidime, 80.4%, imipenem, 79.4% and meropenem, 77.3%). Incidence of multidrug-resistance was 19.6% (19 out of 97 isolates). The higher resistance rate in general as compared to previous studies call for prudent use of antibiotics in order to limit further increase in resistance. Periodical surveillance of antibiotic resistance is fundamental to monitor changes in susceptibility patterns in a hospital setting. A standard definition of Pseudomonas aeruginosa multidrug resistance is crucially needed to allow better comparisons between studies.
format Research Report
author Siva Gowri Pathmanathan
author_facet Siva Gowri Pathmanathan
author_sort Siva Gowri Pathmanathan
title Antibiotic Susceptibility of Clinical Isolates of Pseudomonas Aeruginosa
title_short Antibiotic Susceptibility of Clinical Isolates of Pseudomonas Aeruginosa
title_full Antibiotic Susceptibility of Clinical Isolates of Pseudomonas Aeruginosa
title_fullStr Antibiotic Susceptibility of Clinical Isolates of Pseudomonas Aeruginosa
title_full_unstemmed Antibiotic Susceptibility of Clinical Isolates of Pseudomonas Aeruginosa
title_sort antibiotic susceptibility of clinical isolates of pseudomonas aeruginosa
publisher Universiti Sains Islam Malaysia
publishDate 2011
url http://ddms.usim.edu.my/handle/123456789/4100
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score 13.211869