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Reduction in peritonitis incidence in continuous ambulatory peritoneal dialysis with a new catheter and implantation
J W Moncrief1, R P Popovich, M Dasgupta
1Austin Diagnostic Clinic, Texas.
Abstract:
Recurrent episodes of peritonitis with the same organism cultured at the catheter exit site suggest that early tunnel colonization is associated with a transfer of these organisms through the catheter tunnel directly from the skin into the peritoneal cavity. In this instance the catheter has failed in its fundamental design to establish and maintain a bacteriological barrier. A three-part study was conducted using the Moncrief-Popovich catheter and implantation technique. The first part of the study included 59 patients who used standard spike exchange systems with this new catheter and implantation technique. A reduction in the incidence of peritonitis occurred in the continuous ambulatory peritoneal dialysis (CAPD) program at the Austin Diagnostic Clinic. The previous peritonitis incidence was 1 every 9 patient-months. This study had 1 every 29 patient-months with 530 patient-months of experience. The second part of the study had 79 patients. All except 11 used disconnect exchange systems. There was a total of 482 patient-months of experience with 1 episode every 27 patient-months. Those using the disconnect systems (86%) had 1 episode every 32 patient-months. The third part of the study included microscopic studies of 12 excised catheters. Three were known to be contaminated. The examiners identified those catheters that were free or nearly free of biofilm on the catheter segment between the two cuffs. It is concluded that biofilm analysis and reduction in peritonitis incidence supports the theory that the new catheter and implantation technique form an improved bacteriological barrier in the access for peritoneal dialysis.
Insights
A new catheter and implantation technique significantly reduced peritonitis in continuous ambulatory peritoneal dialysis (CAPD) patients. This improved bacteriological barrier prevents organism transfer from the skin into the peritoneal cavity, reducing infection rates.
Area of Science:
- Nephrology
- Infectious Diseases
- Biomedical Engineering
Background:
- Recurrent peritonitis in peritoneal dialysis (PD) patients is often linked to early tunnel colonization.
- The catheter tunnel can facilitate organism transfer from the skin to the peritoneal cavity, compromising the bacteriological barrier.
- The Moncrief-Popovich catheter and implantation technique were investigated for their potential to improve this barrier.
Purpose of the Study:
- To evaluate the efficacy of a new catheter and implantation technique in reducing peritonitis incidence in continuous ambulatory peritoneal dialysis (CAPD).
- To assess the role of biofilm formation on the catheter in peritonitis development.
- To determine if the new technique establishes a more effective bacteriological barrier.
Main Methods:
- A three-part study involving 59 patients using standard spike exchange systems, followed by 79 patients (mostly using disconnect systems) with the new catheter and technique.
- Analysis of peritonitis incidence rates before and during the study periods.
- Microscopic examination of 12 excised catheters to assess biofilm presence between the cuffs.
Main Results:
- Peritonitis incidence decreased from 1 episode per 9 patient-months to 1 per 29 patient-months in the first part of the study.
- With 79 patients and mostly disconnect systems, the incidence was 1 episode per 27 patient-months overall, and 1 per 32 patient-months for disconnect systems.
- Microscopic analysis revealed less biofilm on excised catheters, particularly those without known contamination.
Conclusions:
- The Moncrief-Popovich catheter and implantation technique demonstrate an improved bacteriological barrier.
- Reduced peritonitis incidence and biofilm formation support the effectiveness of this new approach.
- This technique offers a promising strategy for preventing infections in peritoneal dialysis access.
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