Peritonitis prevention in CAPD: to mask or not?

Perit Dial Int. 2000 May-Jun;20(3):354-8.


Objective: To assess the efficacy of wearing a face mask to prevent peritonitis during continuous ambulatory peritoneal dialysis (CAPD) bag exchange.

Setting: Renal unit at a university hospital.

Patients: Two groups of patients on CAPD were compared: those performing bag exchange with (n = 24) and those without a face mask (n = 40).

Outcomes: Occurrence of first episode of peritonitis and total number of episodes.

Results: No difference was found between groups with respect to probability of developing the first episode of peritonitis (p = 0.757). Patients holding university degrees had evidence of protection, with borderline significance [relative risk (RR) 0.52; confidence interval (CI) 95%, 0.23 -1.18; p= 0.109]. Cox's proportional hazard regression analysis also demonstrated a significant protective factor for patients with university level education (RR 0.42; Cl 95%, 0.18 - 0.98; p = 0.04). Incidence of peritonitis was not significantly different between groups: with-mask group had 1.0 episode/year, and without-mask group had 0.94 episodes/year. Staphylococcus epidermidis was the most commonly identified agent. Staphylococcus aureus was found more frequently in the with-mask group (p = 0.003). Peritonitis due to Streptococcus viridans and Enterococci were detected only in the without-mask group.

Conclusion: The current study suggests that routine use of face masks during CAPD bag exchanges may be unnecessary and could be discontinued.

Publication types

  • Clinical Trial
  • Comparative Study
  • Controlled Clinical Trial

MeSH terms

  • Adult
  • Aged
  • Bacterial Infections / etiology
  • Bacterial Infections / nursing*
  • Bacterial Infections / prevention & control
  • Bacterial Infections / transmission*
  • Brazil
  • Confidence Intervals
  • Female
  • Humans
  • Incidence
  • Infectious Disease Transmission, Professional-to-Patient / prevention & control*
  • Male
  • Masks*
  • Middle Aged
  • Peritoneal Dialysis, Continuous Ambulatory / adverse effects
  • Peritoneal Dialysis, Continuous Ambulatory / methods*
  • Peritonitis / epidemiology
  • Peritonitis / etiology
  • Peritonitis / nursing*
  • Peritonitis / prevention & control*
  • Probability
  • Proportional Hazards Models
  • Reference Values
  • Regression Analysis
  • Risk Factors