Criteria for defining significant central vein stenosis with duplex ultrasound Nicos Labropoulos, PhD, DIC, RVT, Marc Borge, MD, Kenneth Pierce, MD, Peter.

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Presentation transcript:

Criteria for defining significant central vein stenosis with duplex ultrasound Nicos Labropoulos, PhD, DIC, RVT, Marc Borge, MD, Kenneth Pierce, MD, Peter J. Pappas, MD Journal of Vascular Surgery Volume 46, Issue 1, Pages 101-107 (July 2007) DOI: 10.1016/j.jvs.2007.02.062 Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 1 Color ultrasound picture of the common iliac vessels in a patient who presented with swelling and pain. The left common iliac was compressed by the right common iliac artery. The vein had a narrow lumen at the compression site 1.2 mm where distally its diameter measured 14 mm. There was mosaic color flow at the exit of the stenosis, which was much brighter than the color of the iliac artery. The peak vein velocity at the exit of the stenosis was 202 cm/c and 18 cm/s in distally giving a velocity ratio of 11. The waveform in the common femoral vein was continuous with small flow augmentation on distal limb compression and asymmetrical to the normal waveform of the right common femoral vein. Journal of Vascular Surgery 2007 46, 101-107DOI: (10.1016/j.jvs.2007.02.062) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 2 Assessment of the left common iliac vein stenosis with intravascular ultrasound. a, At the site of the stenosis the vein diameter matches the size of the catheter. b, After angioplasty and stent deployment the vein lumen is near normal size. The pressure in the inferior vena cava was 9 mm Hg and in the left external iliac vein 31 mm Hg giving a gradient of 22 mm Hg. After the angioplasty the venous pressure gradient was 8 mm Hg and following the stent placement it dropped at 2 mm Hg. Journal of Vascular Surgery 2007 46, 101-107DOI: (10.1016/j.jvs.2007.02.062) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions