Ultrasound Research Today is a free monthly online journal that collates and summarizes the latest research about Ultrasound, including details on screening, diagnosis, pregnancy, detection.

Renal hemodynamics: theory and practical tips.

Siddiqui TS, Elghoul Z, Reza ST, Leesar MA

Division of Cardiology, University of Louisville, Louisville, Kentucky 40292, USA.

The angiographic assessment of renal artery stenosis (RAS) is often difficult and not reliable. A hyperemic systolic pressure gradient (HSPG) >20 mm Hg provides the highest concordance rate of 100% with an intravascular ultrasound (IVUS) minimal lumen cross sectional area <8.6 mm(2) to predict the severity of RAS. We present 4 cases in whom the role of HSPG and IVUS compared with angiography for the assessment of the severity of RAS is discussed.

Published 1 May 2007 in Catheter Cardiovasc Interv, 69(6): 894-901.
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