The RAAS system

  These benefits of RAAS blockade are accompanied by a fall in kidney capacity. This can involve:
*         lowered GFR,
*         decreased sodium retention,
*         increased potassium retention,
*         decreased acid excretion,
*         decreased phosphate excretion and
*         lowered stimulus to RBC production.
  Out of range values observed with RAAS blockade can include:
*         high creatinine, 
*         high urea,
*         low sodium,
*         high potassium,
*         acidosis (low CO2 or bicarbonate),
*         low calcium,
*         high phosphate and
*         anemia.
  The out of range electrolytes (sodium, potassium, CO2 or bicarbonate, calcium and phosphate) could be of immediate concern. But they can be simply modulated by:
*         limitation of potassium rich foods
*         increased intake of salt (sodium chloride)
*         daily dosage with sodium bicarbonate
*         dosage with calcium carbonate (or calcium acetate) with high phosphate meals as required.