Simultaneous Morphological and Functional Assessment of a Renal Artery Stent Intervention With Intravascular Ultrasound.
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A 73-year-old woman with a history of high blood pressure and hypercholesterolemia developed medically uncontrolled hypertension (200/100 mm Hg). Serum creatinine level was 145 [micro sign]mol/L, and creatinine clearance was 34 mL/min. Renal ultrasound demonstrated a small right kidney (80 mm long) compared with the left one (92 mm long). Left ventricular hypertrophy was present on the ECG and was confirmed by echocardiography. On isotope radiography with99m Tc-mercaptoacetyltriglycine after oral intake of 25 mg captopril, the right kidney was small, with delayed excretion and impaired function (36%). Renal arteriography showed subocclusive ostial stenosis of the right renal artery.