Ultrasound evaluation of typical and atypical patterns of reflux and obstruction in lower

extremity venous diseaseSara Skjonsberg BS, RVT, RPhS

Oregon Vascular Specialists

Bend, OR

Criteria changed to 1.13 seconds….

However they defined situations when standing must be used….

Patients with reflux in the RT position with reflux time of 0.5-1.13 seconds

Segmental reflux associated with incompetent perforating veins

In the GSV in segments traveling outside of the fascia plane (“were found to

have a significant overestimation of reflux duration”)

How many GSVs have segments outside of the fascial plane…. 30% Joe

Zygmunt Venous Ultrasound 2013

• Lateral accessory small saphenous vein– Runs in its own fascial compartment

lateral and parallel to the SSV.

• Incompetent perforators can be the source of varicosities, skin changes and ulceration.

• A pathological perforator is considered to be above 0.35 cm and associated with skin changes