Vascular Module Step 18, Part 4 Vascular Ultrasound DVT 1. Which of the following is true about venous thrombosis?* A. The use of ultrasound has decreased the incidence of subsequent thrombosis B. Ultrasounds help identify cases of pre-existing thrombosis C. Ultrasounds help identify cases of pre-existing thrombosis D. Both B and C 2. Gold standard to confirm venous patency is:* Ability of vein to expand when performing Valsalva maneuver Fact that no thrombotic material can be seen in vessel Ability of vein to vary with size due to respiration Ability of vein to collapse with probe pressure (walls coming together) 3. In a patient with a high clinical suspicion for DVT, a negative scan on your exam should:* Strongly suggest that be confirmed with a full duplex study performed by an expert Should be repeated twice a day for 72 hours Should be repeated daily for 48 hours Greatly reduces likelihood and full duplex does not need to be ordered even if the suspicion is high 4. A focused compression ultrasound technique involves compression of which veins?* Superficial femoral and popliteal Common femoral down to its bifurcation and then popliteal Common femoral and deep femoral Iliac and popliteal 5. What structure is commonly confused with venous thrombosis?* Femoral nerve Lymphatic channel Lymph node Inguinal hernia
