Minimal Inhibitory Concentration of Ceftazidime and Co-trimoxazole for Stenotrophomonas Maltophilia using E-test.
J Glob Infect Dis
; 3(3): 254-8, 2011 Jul.
Article
en En
| MEDLINE
| ID: mdl-21887057
ABSTRACT
BACKGROUND:
Stenotrophomonas maltophilia, previously named as Pseudomonas or Xanthomonas maltophilia, is an important nosocomial pathogenAIM:
The purpose of the present study was to investigate the prevalence of S. maltophilia in Iranian hospitals and its susceptibility to available antimicrobial agents. SETTING ANDDESIGN:
A cross-sectional study in Imam Khomeini Hospital affiliated to Tehran University of Medical Sciences. MATERIALS ANDMETHODS:
All blood specimens were sent to the laboratory for blood culture and biochemical analysis. One hundred samples were positive for S. maltophilia. We used disk diffusion and E-test in order to determine minimal inhibitory concentration (MIC) of ceftazidime and co-trimoxazole as the first line antibiotics for S. maltophilia. The tests were performed and interpreted according to the guidelines of Clinical Laboratory Standards Institute (CLSI). STATISTICALANALYSIS:
Chi-square test and Kappa measurement of agreement were applied as appropriate.RESULTS:
S. maltophilia was the most frequent pathogen (895 specimens; 38.9%) isolated from the samples which were mostly from emergency ward (780 specimens; 33.9%). Ceftazidime MIC(50) and MIC(90) were 2 and 32 µg/ml, respectively (sensitive ≤8 µg/ml and resistant ≥32 µg/ml according to CLSI guideline). MIC(50) and MIC(90) for co-trimoxazole were 0.5 and 2 µg/ml, respectively (sensitive ≤2 µg/ml and resistant ≥4 µg/ml according to CLSI guideline).CONCLUSION:
S. maltophilia is the most frequent pathogen in our hospital with a high susceptibility to both ceftazidime and co-trimoxazole.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Guideline
/
Observational_studies
/
Risk_factors_studies
Idioma:
En
Revista:
J Glob Infect Dis
Año:
2011
Tipo del documento:
Article
País de afiliación:
Irán