Document Detail

Renal duplex scanning: correlation with angiography and isotopic renography.
MedLine Citation:
PMID:  8462709     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to assess the accuracy of Duplex scanning in detecting renovascular disease and to compare it with angiography, renal scintigraphy and captopril test for plasma renin activity and isotopic renography. A Duplex scan was performed in 92 renal arteries (46 patients) and compared to angiography. Three degrees of stenoses were established: 0-60%, 61-99% and occlusion. The peak systolic velocity (PSV) in the renal artery and its ratio to the peak velocity in the aorta (RAR) were used to discriminate stenoses > 60%. PSV in the interlobar arteries was used to assess the relative perfusion of both parenchyma. Angiography demonstrated a stenoses > 60% in 23 hypertensive patients. In all of the patients, plasma renin activity was measured and isotopic renograms (pre- and post-captopril) obtained in order to discriminate hypertension of vascular origin. A PSV in the renal artery > 210 cm/s and a RAR > 3.5 were found to be the diagnostic criteria with the best sensitivity and specificity in detecting stenoses > 60%. Based on these data, Duplex correctly identified 49/54 stenoses > 60%; 28/33 stenoses < 60%; and 5/5 occlusions (kappa 0.79). Sensitivity and specificity in detecting stenoses > 60% were 89.5 and 90.7%, respectively. The ratio between PSV in the interlobar arteries of both parenchyma accurately predicted the relative perfusion (ratio between DTPA uptake in both kidneys) in the isotopic test (n = 23, r = 0.91, p = 0.001). The captopril test (for plasma renin activity and isotopic renography) was positive in only five patients.(ABSTRACT TRUNCATED AT 250 WORDS)
M Miralles; A Santiso; A Gimenez; V Riambau; A Saez; J Daumal; M A Cairols
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of vascular surgery     Volume:  7     ISSN:  0950-821X     ISO Abbreviation:  Eur J Vasc Surg     Publication Date:  1993 Mar 
Date Detail:
Created Date:  1993-05-06     Completed Date:  1993-05-06     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8709440     Medline TA:  Eur J Vasc Surg     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  188-94     Citation Subset:  IM    
Hospital Del Mar, Passeig Maritim 25, Universidad Autonoma De Barcelona, Spain.
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MeSH Terms
Aged, 80 and over
Captopril / diagnostic use
Hypertension, Renovascular / diagnosis*,  surgery
Ischemia / diagnosis,  surgery
Kidney / blood supply
Middle Aged
Postoperative Complications / diagnosis
Radioisotope Renography*
Renal Artery Obstruction / diagnosis*,  surgery
Renin / blood
Reg. No./Substance:
62571-86-2/Captopril; EC

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