[Arterial hypertension of renovascular origin. The value of color Doppler ultrasonography in the detection of stenosis of the renal artery].
Color Doppler sonography is a performant method to detect direct signs of renal artery stenosis with a feasibility rate superior to 90%. The reliability of the method, evaluated with regard to the angiography as reference method, varies, according to the authors, between 80 and 90% with a sensitivity and a specificity between 85-90%. The investigation is above all dedicated to a population where prevalence of renal artery stenosis is high: hypertensive patient with lower limb arteriopathy, or with impairing of the renal function under angiotensin convertase inhibitor, or with hypertension resistant to a multi-therapy, young woman hypertension. The success of the method requires a trained operator, a modern equipment and a precise methodology: a fasting patient, patient positioning adapted to the spectral signal recording, peak velocity measurements at the anatomical sites of stenosis (ostium, first centimeters). Investigation length does not exceed 20 minutes. The exploration is totally atraumatic and does not require any contrast injection.
Puttemans
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Service de Radiologie, C.H. Etterbeek-Ixelles, U.L.B.
D000792:Angiography; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000627:therapeutic use; D001783:Blood Flow Velocity / Q000502:physiology; D005215:Fasting; D005260:Female; D006801:Humans; D006978:Hypertension, Renovascular / Q000000981:diagnostic imaging* / Q000209:etiology; D007866:Leg / Q000098:blood supply; D016491:Peripheral Vascular Diseases / Q000150:complications; D011187:Posture; D015995:Prevalence; D012078:Renal Artery Obstruction / Q000150:complications / Q000000981:diagnostic imaging*; D015203:Reproducibility of Results; D013997:Time Factors; D018615:Ultrasonography, Doppler, Color / Q000379:methods
D000806:Angiotensin-Converting Enzyme Inhibitors