Resistance patterns in Pseudomona aeruginosa
Abstract number: r1970
Orellana M.A., Aramendi M., Galera G., Sanchez M.T., Fernandez T., Aparicio V., Amérigo M.A.
To study the sensibility and the resistance patterns of P. aeruginosa isolated in different clinic samples in outpatients.
180 P. aeruginosa strains were studied between January 2004 and September 2005. The identification and sensibility were performed by the MicroScan Walkaway System (DADE-Behring) according to NCCLS criteria. The antibiotics studied were: Amikacin (Ak), Aztreonam (AZT), Cefepime (Cpe), Cefotaxime (Cft),Ceftazidime (Caz), Ciprofloxacin (Cp), Gentamicin (Gm), Imipenem (Im), Meropenem (Me), Ofloxacin (Ofl), Piperacillin/Tazobactam (P/T), Piperacillin (Pi), Ticarcillin (Ti) and Tobramicin (To).
P. aeruginosa were isolated in: urine 37 (20.56%), wounds 61 (33.89%), otics exudates (ex.) 45 (25.0%), sputum 10 (5.56%), conjunctival ex. 8 (4.44%), nasopharingeal ex. 6 (3.33%), vaginal ex. 3 (1.67%), urhetral ex.2 (1.11%), nasal ex. 1 (0.56%) and other 7 (3.89%).
-The sensibility to antibiotics studied were: Ak 93.9%, Azt 86.1%, Cpe 95.6%, Cft 19.4%, Caz 97.8%, Cp 87.8%, Gm 85.6%, Im 93.9%, Me 99.5%, Ofl 74.6%, P/T 99.6%, Pi 97.8%, Ti 95.0% and To 95.6%.
-The resistance patterns more frequent were: Sensitive to all antibiotics studied 17 (9.44%); resistance to Cft: 95 (52.78%); resistance to Cp + Ofl + Cft: 12 (6.67%); Cft + Gm: 4 (2.22%); Cp + Ofl + Cft + Azt: 7 (3.89%); Cp + Ofl: 4 (2.22%); Cft + Azt: 6 (3.33%); Cft + Im: 3 (1.67%); Gm: 3 (1.67%); Cp + Ofl + Im: 3 (1.67%); Gm + To + Ak + Cp + Ofl + Cft + Caz + Cpe + Azt: 3(1.67%) and other 23 (12.78%).
Wounds were the samples where P. aeruginosa was isolated most frequent.
-The antibiotics studied have a good activity against P. aeruginosa, excep Cefotaxime (only 19.4%).
-There is a low percentage of P. aeruginosa sensitive to all antibiotics studied.
-The resistance patterns most frequent were: resistance to Cefotaxime and Cefotaxime with quinolones (Cp + Ofl).
|Session name:||XXIst ISTH Congress|
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