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Featured Article


"Does Distal Venous Hypertension Affect Lower Extremity Venous Pulsatility?"
D. E. Strandness, MD, Scientific Award for Excellence in Scientific Research

Introduction: Pulsatile flow in the lower extremity venous system is commonly attributed to various cardiac abnormalities. In patients with significant venous insufficiency and resultant venous hypertension, venous capacitance may be drastically reduced. We have noted multiple patterns of venous pulsatility and theorized that the hemodynamic state of the lower extremity venous system could in fact play a role in these patterns. If venous reflux is isolated to the superficial system, ablation of these veins could resolve the venous hypertension and potentially influence the pulsatile flow pattern.
Methods: We compared the presence and pattern of lower extremity venous pulsatility in 293 consecutive patients suffering from chronic venous insufficiency (Mean CEAP 3.2). Of these, 242 limbs underwent endovenous thermal ablation (EVTA) of a refluxing truncal vein. Duplex ultrasound was used to evaluate these limbs approximately 3 days post procedure and provide the basis of this study.
Results: Of the 242 limbs, 98 (40.1%) had evidence of pulsatile flow in the lower extremity venous system preoperatively which was graded into one of three categories. 48 (19.8%) had deep venous insufficiency (16 FV, 32 POP V), which was graded as normal, > 1 second, or > 2 seconds. The remaining had no evidence of deep vein reflux. Paired observations using the Wilcoxon method showed no difference in the venous pulsatility post ablation. Additionally, isolating patients with no evidence of deep venous reflux also revealed no difference in pulsatility following ablation.
Conclusion: Ablation of refluxing truncal veins did not appear to influence the presence or pattern of venous pulsatility in the lower extremities regardless of deep system valve function.

Schroedter WB, White JM, White BD, Sanchez EJ, Izzo EG, June 2010


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Current Happenings 

Introducing our new educational website.

Virtual Vein Center is a new concept in educational delivery. Get the education you need and want, when you need it. If you need CME, you can get them here as well.

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 Several QVI staff took time to attend the 2014 American College of Phlebology Annual Congress in Phoenix Arizona in November to deliver numerous  workshops and lectures. It was a high quality meeting as usual. The complete program is available for download here. 


The 2014 SVU Annual Conference was held in Orlando and several QVI attended and presented numerous presentations. Jeannie was also honored as a Fellow of the SVU.  

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Jeannie recently attended the 25th Society of Vascular Medicine 2014 Annual Conference as an invited speaker in La Jolla, Ca. Her numerous lectures were very well received.

 The International Union of Phlebology, in conjunction with the American College of Phlebology held its World Meeting in Boston in September 2013. Held only every 4 years, this was the first time ever in the US. Several QVI staff were invited speakers  presenting some original scientific research.  

QVI News

Sydney, Australia

Bill was the International Keynote Speaker at the Australian Sonographer Association Annual National Conference in Sydney.

What a great experience!  

To read more about this and our other  international teaching


QVI was once again awarded the D.E. Strandness Award for Scientific Excellence at the 2013 SVU Annual Conference.

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Medical Compression socks continue to be on the forefront of venous treatment. Recently, they have entered the realm of the athlete. To learn more about what compression socks can do you you, please visit


QVI wins the D.E Strandness Award at the 2012 SVU Annual Conference!

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