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Ann Med Res. 2003; 10(4): 173-175


The Resistance Rates of Different Antimicrobials in Staphylococci Isolated from Intensive Care Units

Latife Ižeri-Abut*, Mehmet Refik Tevfik*, Yunus Bulut*

.

Abstract

Ā 

Purpose: The aim of this study is to determine the resistance ratios of staphylococci to antimicrobial agents in

intensive care units that might be useful from therapeutic and epidemiological points of view.

Methods: Staphylococcus spp. were isolated from different specimens and identified according to conventional

methods. Antimicrobial susceptibility test was performed by disk diffusion method according to proposals of

NCCLS.

Results: The incidence of resistance is higher among coagulase-negative staphylococcus (CNS) than Staphylococcus

aureus. The antimicrobial resistance of 58 strains of CNS isolates was 29% teicoplanin, 51% ciprofloxacin, 58%

gentamicin, 63% for each of co-trimoxazole and clindamycin, 79% erythromycin, 86% oxacillin and 96% penicillin.

The multiple antimicrobial resistances were revealed by 96% of CNS isolates. The multiple antimicrobial resistance

was also observed in S. aureus isolates but less than CNS (78%). Of 32 S. aureus isolates, 12% co-trimoxazole, 25%

teicoplanin, 46% erythromycin, 50% clindamycin, 68% gentamicin, 71% ciprofloxacin, 81% oxacillin and 100%

penicillin were resistant. No resistance to vancomycin was observed.

Conclusion: The findings revealed an increase in incidence of resistance and multiple antimicrobial resistant strains

to commonly used antimicrobials in intensive care units. Therefore, prudent policy in prescribing and using of

antibiotics is indispensable.

Key Words: Staphylococcus aureus, CNS, Antibiotic Resistance, Intensive Care Units



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