DIAGNOSIS OF RENOVASCULAR HYPERTENSION BY ECHO-DOPPLER VELOCIMETRY

A 13 year old boy suffering hypertension was examined for peripheral p lasma renin, angiotensin-E, angiotensin-II and aldosterone. All data w ere within the normal range. The Captopril test and renal scintigraphy (both with and without Captopril) also showed normal patterns. Echo-D oppler velocimetry of the renal artery revealed that left renal arteri al peak flow velocity was fast (3.4 m/s). The patient was therefore di agnosed with left renal arterial stenosis, Angiography demonstrated th e duplex of the left renal artery and stenosis of the left lower renal artery. Percutaneous transluminal angioplasty was successfully perfor med.