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Pseudomonas cepacia peritonitis associated with contamination of automatic peritoneal dialysis machines
Abstract:
During a 3-month period, Pseudomonas cepacia was recovered from the peritoneal fluid of 10 patients having chronic dialysis therapy at a peritoneal dialysis center. Six patients developed clinical evidence of peritonitis; one patient developed septicemia. Epidemiologic studies showed that dialysis on specific peritoneal dialysis machines was associated with an increased risk of infection. Laboratory investigation showed contamination of two machines with P. cepacia. Inadequacies in the cleaning and disinfection practices of the automatic peritoneal dialysis machines were identified. Cross-contamination between machines probably occurred through the peritoneal fluid discharge from infected patients during dialysis. Also, the intermittent 2-hour exposure of the machine to 2% formaldehyde may have been inadequate. P. cepacia has not been isolated from the peritoneal fluid of any peritoneal dialysis patient after machine cleaning and disinfection practices were altered.
Insights
Pseudomonas cepacia infections were linked to specific automatic peritoneal dialysis machines. Altering cleaning and disinfection practices eliminated P. cepacia contamination in dialysis fluid, preventing further patient infections.
Area of Science:
- Nephrology
- Infectious Diseases
- Clinical Microbiology
Background:
- Pseudomonas cepacia (P. cepacia) is an opportunistic pathogen.
- Chronic dialysis patients are susceptible to infections.
- Peritonitis is a serious complication in peritoneal dialysis.
Purpose of the Study:
- To investigate the source and control of P. cepacia peritonitis in chronic dialysis patients.
- To identify risk factors associated with P. cepacia infections in a peritoneal dialysis center.
Main Methods:
- Epidemiological investigation of patient infections.
- Laboratory analysis of peritoneal fluid and dialysis equipment.
- Review of cleaning and disinfection protocols for automatic peritoneal dialysis machines.
Main Results:
- P. cepacia was isolated from 10 patients undergoing chronic dialysis therapy.
- Six patients developed peritonitis, and one developed septicemia.
- Contamination of specific automatic peritoneal dialysis machines with P. cepacia was identified, linked to inadequate cleaning and disinfection practices.
Conclusions:
- Inadequate cleaning and disinfection of automatic peritoneal dialysis machines contributed to P. cepacia outbreaks.
- Cross-contamination likely occurred via infected peritoneal fluid.
- Revised cleaning and disinfection protocols successfully eradicated P. cepacia from dialysis fluid, preventing further infections.
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