Detecção de metalo beta lactamase em Pseudomonas aeruginosa isoladas de pacientes hospitalizados
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Data
2009-02-18
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Universidade Federal de Goiás
Resumo
P. aeruginosa is frequently isolated in hospitals and the clinical importance has been
increased due to gravity of infections. The metallo-beta-lactamase (MBL) production is an
emergent mechanism of resistance in P. aeruginosa. The study aimed to determine the
antimicrobial susceptibility profile of P. aeruginosa isolated of patients admitted in a hospital
in Goiânia, to verify the MBL production by diffusion test and detect MBL genes by PCR
technique. A total of 75 samples were evaluated, isolated of various clinical samples, in the
period of January/2005 to January/2007. The biochemical identification was performed by
automation technique system (API 20E ®) and antimicrobial susceptibility profile by Kirby-
Bauer method. The 75 P. aeruginosa presented multi-drug resistance and, the resistance
profile was: 90.7% to ceftazidime: 30.7% to aztreonam, 97.3% to ciprofloxacin; 48.0% of
resistance to piperacilin/tazobactam, 88.0% to cefepime; amicacin, gentamicin and
tobramicina whit resistance profile of 78.7%, 84.0% and 77.4%, respectively. The MBL
production by difusion disc method was 46.7% (35/75). The gene blaSPM-1 was detected in 39
(52.0%) and gene blaIMP-1 in three (4.0%) isolates. The high frequency of P. aeruginosa
resistant and MBL production alert to necessity of control the dissemination of bacteria
multi-drug resistant in hospital, as well as the adoption of preventive actions and explanation
of the health workers about rational use of antibiotics.
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Citação
GONÇALVES, Diana Christina Pereira Santos. Detecção de metalo beta lactamase em Pseudomonas aeruginosa isoladas de pacientes hospitalizados. 2009. 168 f. Dissertação (Mestrado em Medicina) - Universidade Federal de Goiás, Goiânia, 2009.