Evaluation of restenosis,renal function and blood pressure after the renal artery stenting in patients with atherosclerosis renovascular disease

Objective To evaluate the restenosis, renal function and blood pressure after renal artery stenting in patients with atherosclerosis renovascular disease. Methods Percutaneous renal artery stent (PTRAS) was performed in 135 patients with single or bilateral renal artery stenosis (≥70% ).Clinical data of above patients were studied during follow-up period. Results A total of 147 stents were successfully deployed in 145 lesions of 135 consecutive patients. Seventy percent of the patients were followed-up by renal artery angiography for an average of (7.2±5.6) months. The restenosis rate of the renal artery was 7.4%. Ninety-five percent of patients were followed-up for blood pressure and renal function for an average of (22±6) months. The systolic and diastolic pressure were significantly decreased from 172±23/93±16 mm Hg to 159±20/85±13 mm Hg(P0.05). The serum creatitine level and glomerular filtration rate (GFR) did not change significantly during 12 months and 24 months follow-up. Conclusions Implantation of renal artery stent benefits the improvement of blood pressure in the patients with atherosclerosis renal vascular disease with a low renal artery restenosis rate.