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DVT398-BL4
USIDMS Lower Extremity Venous Insufficiency
| Question | Answer |
|---|---|
| What is the valved termed at the saphenofemoral junction? | terminal valve |
| Which way to do the leaflets point? | to the direction of normal venous drainage |
| What do incompetent valves permit? | abnormal retrograde flow or reflux |
| What are visual signs of CVI? | spider veins, reticular veins, varicose veins, edema, ulceration |
| What has become the standard to evaluate CVI? | duplex doppler ultrasonography |
| What are treatment options for CVI? | ligation, thermal ablation, chemical ablation |
| What allows for optimal dilatation and venous filling? | standing |
| What is recommending minimum time between testing sites? | 30 seconds |
| What are pitfalls of assessing venous reflux? | gain alters sensitivity or spectral doppler, high persistence, velocity scales |
| What is normal venous flow waveforms? | spontaneous, phasic with respiration |