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Year : 2015  |  Volume : 4  |  Issue : 3  |  Page : 153-159

Antimicrobial susceptibility pattern of extended-spectrum beta- lactamase producing Klebsiella pneumoniae clinical isolates in an Indian tertiary hospital

1 Department of Microbiology, Mayo Institute of Medical Sciences, Barabanki, Uttar Pradesh, India
2 Department of Microbiology, Gold Field Institute of Medical Sciences and Research, Faridabad, Haryana, India

Correspondence Address:
Amit Kumar Singh
Department of Microbiology, Mayo Institute of Medical Sciences, Barabanki, Uttar Pradesh
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Source of Support: Nil., Conflict of Interest: There are no conflicts of interest.

DOI: 10.4103/2279-042X.162363

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Objective: There is an increased prevalence of extended-spectrum beta-lactamase producing Klebsiella pneumoniae (ESBL-KP) worldwide including India, which is a major concern for the clinicians, especially in intensive care units and pediatric patients. This study aims to determine the prevalence of ESBL-KP and antimicrobial sensitivity profile to plan a proper hospital infection control program to prevent the spread of resistant strains. Methods: KP isolates obtained from various clinical samples were evaluated to detect the production of ESBL by phenotypic methods. Antimicrobial susceptibility profile was also determined of all the isolates. Findings: Of 223 nonduplicate isolates of K. pneumoniae, 114 (51.1%) were ESBL producer and antimicrobial susceptibility profile showed the isolates were uniformly sensitive to imipenem and highly susceptible to beta-lactamase inhibitor combination drugs (67–81%) and aminoglycosides (62–76%), but less susceptible to third generation cephalosporins (14–24%) and non-β-lactam antibiotics such as nitrofurantoin (57%), fluoroquinolones (29–57%), piperacillin (19–23%), and aztreonam (15–24%). Conclusion: This study found that beta-lactamase inhibitor combinations are effective in treatment of such infections due to ESBL-KP thus these drugs should be a part of the empirical therapy and carbapenems should be used when the antimicrobial susceptibility tests report resistance against inhibitors combinations.

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