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Perit Dial Int 18(6): 637-640 1998
© 1998 International Society for Peritoneal Dialysis
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Peritoneal Dialysis International, Vol 18, Issue 6, 637-640
Copyright © 1998 by International Society for Peritoneal Dialysis

Articles

Pseudomonas exit-site infections in CAPD patients: evolution and outcome of treatment

CY Lo, WL Chu, KM Wan, SY Ng, WL Lee, MF Chu, SW Cheng, and WK Lo

Department of Medicine, Tung Wah Hospital, Hong Kong.

OBJECTIVE: To examine the natural history of Pseudomonas aeruginosa (PSA) exit-site infections (ESI) in patients treated with antibiotics with or without surgical interventions. DESIGN: Retrospective record review from May 1994 to April 1997. SETTING: A single dialysis unit in a district hospital. PATIENTS: The review included 353 patients who had undergone continuous ambulatory peritoneal dialysis (CAPD). OUTCOME MEASURES: The prevalence and etiology of ESI, the treatment regimen for PSA ESI, and the outcome of treatment. RESULTS: The prevalence of ESI was 55%. A total of 131 episodes (range 1-5) of PSA ESI occurred in 78 (40.2%) of the 194 patients who experienced ESI. Among these 78 patients, 4 groups with different outcomes were identified. In group I, 35 patients (44.9%) were treated successfully with antibiotic therapy alone. Among these 35 patients, 4 developed PSA peritonitis at a mean of 5 months (range 2-10 mth) after apparent clinical resolution of PSA ESI. Two of the 4 patients switched to long-term hemodialysis (HD) because of peritoneal failure. In group II, 8 patients (10.3%) responded to a combination of antibiotics and shaving of the external cuff. In group III, 21 patients (26.9%) with recurrent ESI underwent elective Tenckhoff catheter removal and reinsertion. One of the 21 patients had relapse of PSA ESI 14 months after the operation. In group IV, 14 patients (17.9%) had recurrent PSA ESI that failed to respond to multiple courses of antibiotics and shaving of the external cuff. Consent for Tenckhoff catheter removal was not obtained and 4 of these 14 patients subsequently developed PSA peritonitis. One of the 4 patients changed to permanent HD due to peritoneal failure. CONCLUSIONS: Considering the increased risk and the poor outcome of PSA peritonitis in patients with persistent PSA ESI, early Tenckhoff catheter removal is recommended if the patient fails to respond to antibiotics with or without externalization of the external cuff.




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