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  • Title: Renal revascularization in the azotemic hypertensive patient resistant to therapy.
    Author: Ying CY, Tifft CP, Gavras H, Chobanian AV.
    Journal: N Engl J Med; 1984 Oct 25; 311(17):1070-5. PubMed ID: 6237260.
    Abstract:
    We undertook this study to assess the frequency of renovascular hypertension in patients with azotemia and hypertension refractory to drug therapy and to determine the effects of renal revascularization on blood pressure and renal function in these subjects. Thirty-nine of 106 consecutive patients admitted for diagnostic evaluation of severe hypertension proved to have renovascular hypertension. Of 21 hypertensive patients with renal insufficiency, 10 appeared to have renovascular hypertension with either bilateral atherosclerotic renovascular disease or unilateral renal arterial stenosis in a solitary functioning kidney. Medical therapy in the hospital often induced further deterioration of renal function despite enhanced blood-pressure control. However, surgical revascularization or percutaneous transluminal angioplasty produced improvement or stabilization of renal function and control of blood pressure in all patients with azotemia who were treated in this manner, despite longstanding hypertension. The benefits of therapy have persisted for 10 to 42 months of follow-up. These studies indicate that refractory hypertension in association with renal insufficiency is a relatively common clinical presentation for renovascular hypertension and bilateral renal-artery disease. Diagnostic evaluation and consideration of renal revascularization appear warranted in such patients, both for the control of the hypertension and for improvement in renal function.
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