Cabg 18y diabetic, edemaAnaemic,

He has been suffering from diabetes cabg was done 18 y back.From the past 8 months he has been suffering from Anaemia 8g hb and unable to walk due to pedal edema.Meanwhile his Hb,sodium levels got down. The sugar levels were unstable. He was admitted in the hospital and all the prescribed tests were done. In the MRI Brain scan, it was found that the brain cells got dried and there were fluctuations in cortisol. He was hospitalized again due to low Hb,Na levels and edema in pedal,hands,stomach and infection in lungs.Endo-colonoscopy,Blood tests,2D Echo, Angiogram,Stomach CT scan have been done this time.His heart pumping rate is nearly 49% and in the CT scan,a 2 cms cyst has been found above the right kidney.Inspite of the tests,we don't understand why there is a reduction in hb,Na and K levels and also the reason for infections in the body.There was no clarification even from the doctors.They told us that because of the infection in the kidney(cyst),all this is happening,kindly help.Tq