Abstract: Objective To explore the mechanism of the renal artery angioplasty applied in hypertension with renal atherosclerosis. Methods Acording to the result of the renal artery angiography, 98 patients were divided to 3 groups. The renin activity and the angiotensin in the therapy groups were measured before and after the angioplasty and the datas were compared among 3 groups. Results After the angioplasty, the renin activity and the angiotensin significantly decreased in the therapy groups (P<0.01). The blood pressure and the creatinine decresed a month later. Conclusion The renal angioplasty can decrease the blood pressure and instantly decrease the renin activity and the angiotensin of the renal vein in hypertension with renal atherosclerosis.

Key words: renal artery stenosis, atherosclerosis, angioplasty, renin, angiotensin, hypertension