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 RESEARCH ARTICLE
Year : 2008  |  Volume : 40  |  Issue : 5  |  Page : 230-234

Antibiotic susceptibility patterns of Pseudomonas aeruginosa at a tertiary care hospital in Gujarat, India


1 Shri Swaminarayan Sanskar Pharmacy College, Zundal, Ahmadabad, India
2 Department of Pharmacology, Institute of Pharmacy, Nirma University of Science and Technology, Ahmedabad, India
3 Department of Pharmacology, Rajasthan Hospitals, Ahmadabad, India

Correspondence Address:
Jagruti A Patel
Department of Pharmacology, Institute of Pharmacy, Nirma University of Science and Technology, Ahmedabad
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0253-7613.44156

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Objectives: The present study was undertaken to assess the antibiotic susceptibility patterns of Pseudomonas aeruginosa at a tertiary care hospital in Gujarat, India. Due to significant changes in microbial genetic ecology, as a result of indiscriminate use of anti-microbials, the spread of anti-microbial resistance is now a global problem. Materials and Methods: Out of 276 culture positive samples, 56 samples of Pseudomonas aeruginosa were examined and 10 different types of specimen were collected. Microbial sensitivity testing was done using disk diffusion test with Pseudomonas species NCTC 10662, as per CLSI guidelines. Results: The highest number of Pseudomonas infections was found in urine, followed by pus and sputum. Pseudomonas species demonstrated marked resistance against monotherapy of penicillins, cephalosporins, fluoroquinolones, tetracyclines and macrolides. Only combination drugs like Ticarcillin + Clavulanic acid, Piperacillin + Tazobactum, Cefoperazone + Sulbactum, Cefotaxime + Sulbactum, Ceftriaxome + Sulbactum and monotherapy of amikacin showed higher sensitivity to Pseudomonas infections; however, the maximum sensitivity was shown by the Carbapenems. Conclusion: From the present study, we conclude that urinary tract infection was the most common hospital acquired infection. Also, co-administration of β -lactamase inhibitors markedly expanded the anti-microbial sensitivity of semi-synthetic penicillins and cephalosporins. The aminoglycoside group of antibiotics - amikacin - demonstrated maximum sensitivity against pseudomonas species. Therefore, use of amikacin should be restricted to severe nosocomial infections, in order to avoid rapid emergence of resistant strains. Periodic susceptibility testing should be carried out over a period of two to three years, to detect the resistance trends. Also, a rational strategy on the limited and prudent use of anti-Pseudomonal agents is urgently required.






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