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 ORIGINAL ARTICLE
Year : 2013  |  Volume : 23  |  Issue : 1  |  Page : 12-17

Microbiological aspects of peritonitis in patients on continuous ambulatory peritoneal dialysis


1 Department of Nephrology, Indira Gandhi Medical College, Shimla, Himachal Pradesh, India
2 Department of Microbiology, Indira Gandhi Medical College, Shimla, Himachal Pradesh, India
3 Department of Medicine, Indira Gandhi Medical College, Shimla, Himachal Pradesh, India

Correspondence Address:
S Vikrant
Department of Nephrology, Indira Gandhi Medical College, Shimla - 171 001, Himachal Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-4065.107188

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The objective of the study was to identify the microbiological spectrum and drug-sensitivity pattern of peritonitis in patients on continuous ambulatory peritoneal dialysis. This was a prospective study done over a period of a year-and-a-half at a tertiary-care hospital in a hilly state of India. The effluent dialysate bags from 36 consecutive patients with peritonitis were studied. One hunderd ml dialysate fluid was processed under aseptic conditions by lysis centrifugation method. Microscopy and culture was done from the deposits for bacteriological, fungal, and mycobacterial isolates. They were identified by colony morphology and their biochemical reactions. Drug susceptibility testing was done by Kirby-Bauer disc diffusion method. In 36 dialysates, 33 (91.6%) dialysates were culture-positive and in 3 (8.4%), the culture was negative. A total of 36 microorganisms were isolated in 33 cultures. Among the 36 microorganisms, 19 (52.8%) isolates were gram-positive, 10 (27.8%) were gram-negative, 5 (13.9%) were fungi, and 2 (5.6%) were mycobacterial isolates. All gram-positive organisms were sensitive to ampicillin, amoxi-clavulanic acid, cefazolin, clindamycin, and vancomycin. Neither a methicillin-resistant Staphylococci aureus nor a vancomycin-resistant Enterococcus was isolated in gram-positive isolates. Gram-negative organisms were sensitive to ciprofloxacin, ceftriaxone, ceftazidime, cefepime, gentamicin, piperacillin-tazobactam and imipenem. One of the gram-negative isolate was an extended spectrum beta-lactamase producer. Gram-positive peritonitis was more frequent than gram-negative peritonitis in our continuous ambulatory peritoneal dialysis patients. Mycobacterial causes were responsible for peritonitis in patients with culture-negative peritonitis which was not responding to the conventional antimicrobial therapy.






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Indian Journal of Nephrology
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