A Study on Prevalence and Antimicrobial Resistance Pattern of Urinary Klebsiella pneumoniae in a Tertiary Care Centre in South India

Vedachalam, Dillirani; Suresh, R.

doi:10.20546/ijcmas.2018.704.103

Cited by 1 publication

(1 citation statement)

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“…64 K. pneumoniae isolates were least susceptible to amoxicillin (3.3%) followed by nitrofurantoin (4.9%) whereas in a previous study they were more susceptible to nitrofurantoin (81.6%). 65 Like K. pneumoniae , E. coli were also least susceptible to amoxicillin; this finding resembles with a prior study by Randrianirina et al 66 It may be due to the fact that amoxicillin is a first-line drug which is easily hydrolyzed by the bacterial enzymes and offers less in the treatment of the infections caused by GNB. Documenting the plight of resistance to carbapenem was the theme of this study in which 4.4% isolates of the E. coli and K. pneumoniae were resistant against this drug.…”

Section: Discussionsupporting

confidence: 80%

Detection of NDM Variants (blaNDM-1, blaNDM-2, blaNDM-3) from Carbapenem-Resistant Escherichia coli and Klebsiella pneumoniae: First Report from Nepal

Thapa¹,

Upreti²,

Bimali³

et al. 2022

IDR

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Background Increasing burden of carbapenem resistance among Enterobacterales is attributable to their ability to produce carbapenemase enzymes like metallo-beta-lactamase (MBL), Klebsiella pneumoniae carbapenemase (KPC), and OXA-type. This study aimed to determine the prevalence of carbapenemases and MBL genes (( bla NDM-1, bla NDM-1 and bla NDM-3 ) among E. coli and K. pneumoniae isolates. Methods A total of 2474 urine samples collected during the study period (July–December 2017) were processed at the microbiology laboratory of Kathmandu Model Hospital, Kathmandu. Isolates of E. coli and K. pneumoniae were processed for antimicrobial susceptibility testing (AST) by disc diffusion method. Carbapenem-resistant isolates were subjected to Modified Hodge Test (MHT) for phenotypic confirmation, and inhibitor-based combined disc tests for the differentiation of carbapenemase (MBL and KPC). MBL-producing isolates were screened for NDM genes by polymerase chain reaction (PCR). Results Of the total urine samples processed, 19.5% (483/2474) showed the bacterial growth. E. coli (72.6%; 351/483) was the predominant isolate followed by K. pneumoniae (12.6%; 61/483). In AST, 4.4% (18/412) isolates of E. coli (15/351) and K. pneumonia (3/61) showed resistance towards carbapenems, while 1.7% (7/412) of the isolates was confirmed as carbapenem-resistant in MHT. In this study, all (3/3) the isolates of K. pneumoniae were KPC-producers, whereas 66.7% (10/15), 20% (3/15) and 13.3% (2/15) of the E. coli isolates were MBL, KPC and MBL/KPC (both)-producers, respectively. In PCR assay, 80% (8/10), 90% (9/10) and 100% (10/10) of the isolates were positive for bla NDM-1 , bla NDM-2 and bla NDM-3, respectively. Conclusion Presence of NDM genes among carbapenemase-producing isolates is indicative of potential spread of drug-resistant variants. This study recommends the implementation of molecular diagnostic facilities in clinical settings for proper infection control, which can optimize the treatment therapies, and curb the emergence and spread of drug-resistant pathogens.

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Section: Discussionsupporting

confidence: 80%