JOURNAL ARTICLE
RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
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Hospitalizations in patients treated sequentially by chronic hemodialysis and continuous peritoneal dialysis.

It is not established whether hospitalizations are more frequent or longer in patients on peritoneal dialysis (PD) or chronic in-center hemodialysis (HD). Comorbidity is a major factor affecting the comparison of hospitalizations. To account for comorbidity, we compared hospitalizations between the PD and HD periods in 16 patients, 8 of whom were treated by PD first (group A), and 8, by HD first (group B). In group A, causes of renal failure were diabetes (n = 3), primary renal disease (n = 2), systemic disease (n = 2), and hereditary nephropathy (n = 1). Age at onset of PD was 53 +/- 11 years; duration of PD, 31 +/- 17 months; and duration of HD, 40 +/- 33 months. This group had 52 hospitalizations in the PD period and 80 hospitalizations in the HD period. Hospitalization rate (n/ patient-year) was 2.5 +/- 2.0 during PD and 3.0 +/- 3.0 during HD (nonsignificant), and duration of hospitalization (days/patient-year) was 19.6 +/- 15.5 during PD and 21.9 +/- 17.7 during HD (nonsignificant). The three most common causes of hospitalization were peritonitis (27%), other infections (21%), and cardiovascular disease (14%) in the PD period, and HD access problems (35%), infections (16%), and cardiovascular disease (12%) in the HD period. In group B, causes of renal failure were diabetes (n = 4), primary renal disease (n = 3), and hypertension (n = 1). Age at onset of HD was 56 +/- 10 years; duration of HD, 41 +/- 19 months; and duration of PD, 60 +/- 24 months. This group had 82 hospitalizations in the HD period and 76 hospitalizations in the PD period. Hospitalization rate was 3.0 +/- 2.4 during HD and 1.9 +/- 2.8 during PD (nonsignificant), and duration of hospitalization was 17.3 +/- 25.1 during HD and 12.7 +/- 21.3 during PD (nonsignificant). The three most common causes of hospitalization were HD access problems (40%), cardiovascular disease (19%), and infections (12%) in the HD period, and other infections (36%), cardiovascular disease (19%), and peritonitis (21%) in the PD period. In patients changing dialysis modalities, rate and duration of hospitalizations did not vary between HD and PD. The causes of hospitalization were similar in the HD and PD periods regardless of which modality was applied first.

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