Factors contributing and predisposing to peritonitis were studied retrospectively in 83 children treated with continuous ambulatory (CAPD) or continuous cycling peritoneal dialysis (CCPD) from 1978 to 1988. Recurrent peritonitis was the most frequent complication and the major reason for peritoneal dialysis failure. Fifty patients had 171 episodes of peritonitis during the ten years and 33 remained peritonitis-free. The duration of dialysis was significantly shorter in the peritonitis-free group. The incidence of peritonitis was lower with CCPD than with CAPD. Leucopenia was not a predisposing factor nor was blood leucocytosis helpful in diagnosing peritonitis. Serum IgG was low in 33% of patients with episodes of peritonitis, but there was no correlation or predictive value in this finding. The C3 component of complement was relatively lower than the C4 but both components was relatively lower than the C4 but both components were usually in the normal range. Serum albumin was low in all patients, but lower in those with peritonitis episodes. Age, sex, primary disease, diapers, pyelostomies, dialysis training, and living conditions were not significantly associated risk factors. Sterile dressings gave no benefit over the shower technique. Patient noncompliance, upper respiratory tract infection, skin infections, and dental treatment were potential risk factors. However, peritonitis seemed to be distributed randomly among the patients.

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