Most elderly people with chronic kidney disease choose to receive hemodialysis. The increasing number of elderly hemodialysis patients and the associated cost of dialysis make quality control necessary [1]. Death due to cardiovascular complications occurs more frequently in elderly hemodialysis patients than in younger patients [2], and this is associated with hyperphosphatemia, hyperkalemia, and excessive interdialytic weight gain rate (IWGR). Serum phosphorus is an indicator of dietary adherence, and serious complications can result if hyperphosphatemia persists. Despite improvements in renal replacement therapy, regular hemodialysis
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