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ORIGINAL ARTICLE
Year : 2020  |  Volume : 9  |  Issue : 1  |  Page : 25-30

A study of microbiological profile and its antimicrobial susceptibility patterns related to central line-associated bloodstream infections in respiratory intensive care unit in a tertiary care hospital


1 Department of Microbiology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
2 Department of Anaesthesia, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India
3 Department of Emergency Medicine, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India

Correspondence Address:
Krishna Kanchan Sharma
Professor and Head, Department of Microbiology, Sri Venkateswara Institute of Medical Sciences, Alipiri Road, Tirupati 517 507, Andhra Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JCSR.JCSR_18_19

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Background: Complications associated with central venous catheter central line central line-associated bloodstream infections (CLABSIs). Methods: We prospective by studied the microbiological profile and antimicrobial susceptibility patterns of isolated bacteria from CLABSIs in respiratory intensive care unit at our a tertiary care teaching hospital in Tirupati, Andhra Pradesh. Results: Colonisers were isolated from 110 of the 288 samples without any growth in blood cultures from among 288 samples that were submitted with a clinical suspicion of sepsis from patients with eligible central line. Among these, Staphylococcus aureus was the predominant coloniser. Seventy-four were blood culture positive, of which 36 showed other sources of infection. In our study, CLABSI rate was 12.9/1000 catheterised days. Among these culture positives, predominant isolate was S. aureus, followed by Staphylococcus hominis, Acinetobacter, Klebsiella and Escherichia coli. All the S. aureus strains were sensitive to linezolid, tetracycline and vancomycin. Among Gram-negative organisms, Acinetobacter baumannii and E. coli strains were 100% sensitive to polymyxin B and tigecycline. In our study, we have observed carbapenem resistance in E. coli and A. baumannii, which is alarming. Methicillin-resistant S. aureus accounted for 71.4% of S. aureus CLABSIs. All A. baumannii (n = 6), Klebsiella (n = 4) and E. coli (n = 4) isolates were extended spectrum beta-lactamase producers. Conclusions: Strict implementation of insertion and maintenance bundle care of the central lines is mandatory to prevent colonisation.


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