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I am concerned about 2 things:
1.High phosphate levels.
2.The limb movements which could be from neuropathy secondary to renal failure
High phosphate levels can be corrected by Phosphate binders. They include calcium carbonate
and calcium acetate
. They will decrease the phosphate by binding to phosphate in the gut. Because they also increase your calcium levels, they should be guided by your MD after carefully looking at the serum calcium levels.
If the weakness in limb is getting worse he might need dialysis
Fluid over load can be corrected with diuretics. If the load is not controlled with diuretic medicines, then he needs dialysis.