Abstract
CAPD was compared with hemodialysis in terms of the balance of Ca and phosphate. The high serum Ca level in CAPD limited the use of vitamin D and Ca carbonate. However, CAPD patients showed lower PTH and ALP levels than those on hemodialysis, as well as better bone parameters by microdensitometry. As a result, we considered that osteodystrophy is inhibited only within 4 years after the introduction of CAPD. The Ca balance has been negative even using dialysate at the present Ca concentration. In order to increase the dosage of vitamin D and Ca carbonate in the future, a low-Ca dialysate will be required. At present, 10% of patients require increased doses of vitamin D due to increased PTH. It is advisable to use low-Ca dialysate in these patients.
