NDT Advance Access originally published online on October 4, 2005
Nephrology Dialysis Transplantation 2005 20(12):2793-2796; doi:10.1093/ndt/gfi123
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The clinical course of peritoneal dialysis-related peritonitis caused by Corynebacterium species
Department of Medicine & Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, China
Correspondence and offprint requests to: Dr C.-C. Szeto, Department of Medicine & Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, China. Email: ccszeto{at}cuhk.edu.hk
Background. Corynebacterium species are part of the normal skin flora. The incidence of nosocomial infections caused by Corynebacterium species have increased substantially over the past two decades. However, the clinical course of Corynebacterium peritonitis complicating peritoneal dialysis remains unclear.
Method. We reviewed all the Corynebacterium peritonitis in our dialysis unit from 1995 to 2002. During this period, there were 1485 episodes of peritonitis recorded; 27 (1.8%) of which were caused by Corynebacterium species.
Results. The underlying renal diagnosis and prevalence of comorbid conditions of the 27 patients were similar to our whole dialysis population. The bacteria isolated were resistant to penicillin in 8 cases (29.6%). Three cases (11.1%) had concomitant exit-site infection. The overall primary response rate was 74.1%; the complete cure rate was 37.0%. Episodes that received vancomycin as initial antibiotic had a marginally higher primary response rate (9 in 10 vs 11 in 17 episodes, P = 0.2) and complete cure rates (7 in 10 vs 3 in 17 episodes, P = 0.12) than the episodes that received cephalosporins, although neither of the differences was statistically significant. Thirteen cases (48.1%) had recurrent peritonitis after antibiotic therapy, 8 of which had the recurrent episode at least 30 days after stopping antibiotics (median 54 days, range 43–60 days). Eight recurrent cases (61.5%) were successfully cured by another 3 week course of intra-peritoneal vancomycin.
Conclusions. Recurrent Corynebacterium peritonitis is common after a 2 week course of antibiotics. Recurrent Corynebacterium peritonitis may be delayed up to 2 months after the antibiotic is stopped. Recurrent peritonitis can usually be cured with a 3 week course of intra-peritoneal vancomycin, which is probably the preferred antibiotic regimen for Corynebacterium peritonitis.
Keywords: peritoneal dialysis; peritonitis; renal failure
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