An Anatomic Source of False Venous Reflux with Continuous Wave Doppler

Abstract

A bidirectional Doppler signal in a region of venous junction without any incompetent veins can be misinterpreted as venous reflux. A careful examination of veins not only at the region of the junction, but also at some distance down the stem of the vein is important during CW Doppler or duplex assessment.

Can preoperative duplex marking of the saphenopopliteal junction be avoided?

“…Its localization power is also poor 10 as it can easily misinterpret other closely related venous signals. [9][10][11] Duplex ultrasound has become the method of choice for the assessment of venous disease. It is safe, non-invasive, reliable and cost-effective.…”

Current management of popliteal fossa incompetent superficial venous systems

“…4,[8][9][10] It may indicate reflux in the popliteal, gastrocnemius or Giacomini veins, which may even be a result of, clinically insignificant, segmental reflux. A bidirectional Doppler signal in the region of a venous junction without any incompetence can also be misinterpreted as venous reflux 11 and other unspecified superficial veins can be the source of reflux signals. 12 Consequently, some authors have recommended assessment with duplex ultrasound in all patients with uncomplicated primary varicose veins if surgery is contemplated.…”