TY - JOUR
T1 - Renal artery stenosis
T2 - Analysis of doppler waveform parameters and tardus-parvus pattern
AU - Kliewer, Mark A.
AU - Tupler, Richard H.
AU - Carroll, Barbara A.
AU - Paine, Susan S.
AU - Kriegshauser, J. Scott
AU - Hertzberg, Barbara S.
AU - Svetkey, Laura P.
PY - 1993/12
Y1 - 1993/12
N2 - PURPOSE: The utility of Doppler parameters and waveform contour analysis for diagnosis of renal artery stenosis was studied in a hypertensive population screened for renovascular hypertension. MATERIALS AND METHODS: The Doppler results were compared with those obtained with angiography in a prospective double-blind study involving 118 kidneys in 46 patients with hypertension and 11 potential renal donors with normal blood pressure. Doppler parameters measured in the distal renal artery included systolic acceleration, acceleration time, peak systolic velocity, deceleration in late systole, pulsatility and resistivity indexes, and waveform features in early systole. RESULTS: Angiograms demonstrated 28 stenotic renal arteries. There was no significant difference between stenotic (>50% diameter narrowing) and nonstenotic renal arteries for any parameters studied. When stenosis was further categorized as moderate (50%-79%) or severe (80%-95%), significant (P < .05) differences for acceleration time and systolic acceleration were found between nonstenotic and severely stenotic arteries. CONCLUSION: Doppler characterization of the tardus-parvus phenomenon in the distal renal artery is not an adequate screening method for detection of renal artery stenosis.
AB - PURPOSE: The utility of Doppler parameters and waveform contour analysis for diagnosis of renal artery stenosis was studied in a hypertensive population screened for renovascular hypertension. MATERIALS AND METHODS: The Doppler results were compared with those obtained with angiography in a prospective double-blind study involving 118 kidneys in 46 patients with hypertension and 11 potential renal donors with normal blood pressure. Doppler parameters measured in the distal renal artery included systolic acceleration, acceleration time, peak systolic velocity, deceleration in late systole, pulsatility and resistivity indexes, and waveform features in early systole. RESULTS: Angiograms demonstrated 28 stenotic renal arteries. There was no significant difference between stenotic (>50% diameter narrowing) and nonstenotic renal arteries for any parameters studied. When stenosis was further categorized as moderate (50%-79%) or severe (80%-95%), significant (P < .05) differences for acceleration time and systolic acceleration were found between nonstenotic and severely stenotic arteries. CONCLUSION: Doppler characterization of the tardus-parvus phenomenon in the distal renal artery is not an adequate screening method for detection of renal artery stenosis.
KW - Hypertension, renovascular
KW - Renal arteries, US, 961.12984
KW - Renal arteries, stenosis or obstruction, 961.721
KW - Ultrasound (US), Doppler studies
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U2 - 10.1148/radiology.189.3.8234704
DO - 10.1148/radiology.189.3.8234704
M3 - Article
C2 - 8234704
AN - SCOPUS:0027435076
SN - 0033-8419
VL - 189
SP - 779
EP - 787
JO - Radiology
JF - Radiology
IS - 3
ER -