i (50year) am diabetic & rheumatic heart disease patient . i underwent coronary angiograhy 29/10/2010 and balloon mitra valvuloplasty on 30/10/2010. subsequently i also underwent coronary angioplasty + stent(CYPHER) (M)LAD on 01/11/2010 with good end result .since then i am taking asprin(150mg),deplatt(75mg),atorlip(20mg).in my urine routine tests Traces presence of albumin is found since last three months. serum patassium is 5.0mEq/L ,serum creatinine, urea,uric acid results are normal.To keep kidneies safe any advice ?