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  • Title: Stent angioplasty of severe atherosclerotic ostial renal artery stenosis in patients with diabetes mellitus and nephrosclerosis.
    Author: Zeller T, Müller C, Frank U, Bürgelin K, Horn B, Schwarzwälder U, Cook-Bruns N, Neumann FJ.
    Journal: Catheter Cardiovasc Interv; 2003 Apr; 58(4):510-5. PubMed ID: 12652503.
    Abstract:
    Atherosclerotic renal artery stenosis (ARAS) may lead to deterioration of renal function or hypertension. The clinical outcome after stent angioplasty of ARAS on renal function and blood pressure control in patients with diabetes and nephrosclerosis is the subject of some controversy. We have analyzed the results of our single-center experience with stent angioplasty for severe (>/= 70%) ostial ARAS and present here the results of a subgroup analysis of those patients who had diabetes mellitus and nephrosclerosis. From 1996 to 2001, 241 patients underwent stent angioplasty for the treatment of ARAS at our center. Of these, 99 patients had diabetes mellitus (41%) and 176 patients (73%) had nephrosclerosis defined as intrarenal resistance index (RI) >/= 0.7 diagnosed by duplex ultrasound. All lesions (n = 355) were treated successfully. Mean blood pressure at baseline was comparable and significantly improved immediately after the intervention in all groups (nondiabetics: 102 +/- 12 to 93 +/- 10 mm Hg; diabetics: 102 +/- 14 to 93 +/- 11 mm Hg; RI < 0.7: 105 +/- 13 to 95 +/- 10 mm Hg; RI = 0.7-0.8: 100 +/- 12 to 92 +/- 10 mm Hg; RI > 0.8: 102 +/- 15 to 92 +/- 11 mm Hg; P < 0.0001 each). Baseline serum creatinine was not significantly lower in nondiabetics compared to diabetics (1.46 +/- 0.9 vs. 1.62 +/- 1.2 mg %; P < 0.05) and increased in patients with nephrosclerosis (RI < 0.7: 1.18 +/- 0.6 mg %; RI = 0.7-0.8: 1.57 +/- 1.1 mg %; RI > 0.8: 1.96 +/- 1.6 mg %). Except for patients without nephrosclerosis who had a normal baseline creatinine, serum creatinine decreased significantly in all subgroups during follow-up. Stent angioplasty of ARAS offers favorable acute and long-term clinical results for the preservation of the renal function and for blood pressure control in patients with diabetes mellitus and nephrosclerosis.
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