Abstract:Objective 140 patients with atherosclerotic renal artery stenosis who underwent stenting angioplasty were analysed retrospectively to investigate the effects on hypertension control and renal function improvement after renal artery stenting. Methods One hundred and forty patients who underwent renal artery stenting between January 2007 and June 2011 were followed up. Among 140 patients[85 men, 55 women, age ranged from 47 to 86 years, mean age (67.4±9.82) years],a total of 152 renal artery stents were implanted and 12 patients underwent bilateral renal artery stent implantation. Post-operative complication, blood pressure variation and various kinds of hypotensors, serum creatinine, and urea nitrogen were recorded. Renal artery sonography was also performed to investigate the patency after stenting. Results All operations were successful. There were 12 peri-operative complications, 5 perireal hematomas, 5 hematomas at puncture site, 2 upper gastric hemorrhage. One patient died during peri-operative period. Follow-up for 24 months. Among patients with hypertension, kinds of antihypertensive drug decreased from 2.9±1.2 preoperatively to 1.9±1.3 postoperatively (P<0.05). After operation, patients’blood pressure also decreased [(systolic pressure (150.04±16.69)mmHg pre-operatively vs (137.05±12.58)mmHg post-operatively, P<0.001; diastolic pressure (81.69±12.02)mmHg pre-operatively v.s. (79.29±8.71)mmHg post-operatively,P<0.05)].No hypertensive patient was cured, but 108(77.1%) hypertensive patient were improved, while 32(22.9%) had no effect. In patients with normal renal function, serum creatinine and urea nitrogen decreased after stenting (pre-operative sCr (91.63±38.06) μmol/L, v.s. post-operative (87.69±40.31) μmol/L, P<0.001;pre-operative BUN (5.97±1.800 mmol/L,vs post-operative (5.63±1.83) mmol/L,P<0.05). Patients complicated by pre-operative renal insufficiency did not get benefit on renal function after interventional procedure. Conclusions Renal artery stent implantation reduces high blood pressure in those who suffer from hypertension or be helpful for controlling blood pressure.In patients with normal renal function, glomerular filtration rate also is improved after implantation.
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