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Renal artery stenosis (Doppler ultrasound)

Case contributed by Dr Adriana Dubbeldam


Acute kidney failure and hypertension.

Patient Data

Age: 65 years
Gender: Male

Left intrarenal Doppler examination shows a normal arterial curve with sharp systolic peak and resistance index <0.70

Intrarenal Doppler examination reveals a low resistance index (0.52) in the right kidney with flattened arterial curves (parvus tardus), suggestive for renal artery stenosis by the indirect method. Ostial arterial curves were not obtainable due to important bowel movement artefacts (direct method).

CT angiography on the next day to confirm renal artery stenosis

The diagnosis was confirmed by CT angiography which showed important atherosclerotic calcifications of the right renal artery ostium and a moderate to severe stenosis.

Case Discussion

Renal artery stenosis refers to a narrowing of a renal artery and is a cause of secondary hypertension. 

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Case information

rID: 21826
Published: 20th Feb 2013
Last edited: 12th Jan 2020
Inclusion in quiz mode: Included

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