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
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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
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• Lateral accessory small saphenous vein– Runs in its own fascial compartment
lateral and parallel to the SSV.
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• 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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