ultrasound evaluation of typical and atypical patterns of ...criteria changed to 1.13 seconds…....
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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
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