The Japanese Journal of Clinical Dialysis Vol.17 No.12(6)

Theme Expanding Clinical Experimental Findings for Nutritional Management
Title Nutrition and dietary guidance for abnormal metabolism of calcium and phosphorus in dialysis patients
Publish Date 2001/11
Author Yuri Oba Department of Nutrition, Kasukabe-Shuwa Hospital
Author Satoshi Kurihara Department of Nephrology, Kasukabe-Shuwa Hospital
[ Summary ] In dialysis patients, abnormal metabolism of calcium(Ca) and phosphorus(P) frequently develops due to decreased excretion of P from the kidney and the decreased absorption of Ca from the intestine resulting from vitamin D deficiency. Low serum Ca and high serum P lead to renal osteodystrophy due to the overse cretion of parathyroid hormone, and high Ca-P products increase the risk of metastatic soft tissue calcifications, especially within the cardiovascular system.
To prevent these serious complications, dietary guidance on Ca and P intake is very importants. Food high in protein and/or Ca contents are usually high in P and must be therefore restricted in dialysis patients. High P containing foods are dairy products, fish and shellfish, liver, buckwheat noodles, and preserved food. If protein intake is adequate, there is almost always a requirement for phosphate binders to appropriately control serum P.
Based on clinical laboratory data, the status of complications, the medications taken, and the patients' food preferences, dietary P intake should be aggressively restricted in order to maintain a healthy nutritional status in dialysis patients.
back