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Official publication of the Indian Society of Nephrology
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Skin colonizers and catheter associated blood stream infections in incident Indian dialysis patients

1 Department of Nephrology, Christian Medical College, Vellore, Tamil Nadu, India
2 Department of Microbiology, Christian Medical College, Vellore, Tamil Nadu, India
3 Department of Nephrology, Jupiter Hospital, Baner, Pune, Maharashtra, India
4 Division of Nephrology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada

Correspondence Address:
Anna T Valson,
Department of Nephrology, Christian Medical College Vellore, Ida Scudder Road, Vellore, Tamil Nadu – 632004
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijn.IJN_400_20

Introduction: Skin colonization is a risk factor for multi-drug resistant (MDR) catheter-associated bloodstream infections (CABSI). This study aimed to determine the prevalence and spectrum of skin colonizing MDR organisms in incident HD patients and their correlation with CABSI. Methods: This single-center prospective cohort study included consecutive adult incident HD patients who underwent tunneled or non-tunneled internal jugular vein HD catheter insertion between June 1, 2017 and October 31, 2017. Nasal, axillary, and exit site swabs were obtained prior to catheter insertion, at 14–21 days, and 28–35 days after catheter insertion. Results: Forty-three patients (69.7% male, 32.5% diabetic) were included and provided baseline swabs, while 29 and 10 patients respectively were available for follow-up swabs. MDR bacterial colonization, MRSA colonization, and MDR gram-negative colonization on the baseline set of swabs were seen in 76.7%, 69.7%, and 9.3% patients respectively. Of the 29 patients with at least two consecutive sets of swabs, 79.3% showed persistent colonization by MDR gram-positive organisms, most commonly by MRSA. Six patients developed a CABSI during the follow-up period (incidence rate 3.7 per 1000 patient days), 83.4% were gram negative, and in only one instance (16.6%) was the bacterial strain identical to that which had previously colonized the skin. Conclusions: Three-fourths of HD patients were colonized by MDR bacteria prior to HD initiation. Despite the majority being persistently colonized by MDR gram-positive organisms, CABSIs were predominantly gram negative.

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Indian Journal of Nephrology
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Online since 20th Sept '07