RVT - Registered Vascular Technologist Peripheral Venous Testing Questions and Answers

Question 1

A 68-year-old male is referred for a preoperative vein mapping of the right leg prior to coronary artery bypass grafting (CABG).
Which of the following is the minimum acceptable diameter for the Greater Saphenous Vein (GSV) to be considered a suitable conduit?

Accepted Answer

2.0 mm

Answer

1.0 mm

Answer

1.5 mm

Answer

3.5 mm

Question 2

During a lower extremity venous duplex examination for suspected deep vein thrombosis (DVT), the primary diagnostic criterion is:

Accepted Answer

Lack of complete coaptation of the vein walls with transducer pressure.

Answer

Demonstration of reversed flow with color Doppler.

Answer

The presence of a continuous, non-phasic waveform in the common femoral vein.

Answer

Visualization of echogenic material within the vein lumen.

Question 3

A patient presents with left lower extremity swelling and pain. Duplex ultrasound reveals compression of the left common iliac vein by the overlying right common iliac artery. This finding is most consistent with:

Accepted Answer

May-Thurner Syndrome

Answer

Phlegmasia Cerulea Dolens

Answer

Paget-Schroetter Syndrome

Answer

Klippel-Trenaunay Syndrome

Question 4

When performing a duplex ultrasound to evaluate for venous insufficiency, which patient position is considered optimal for eliciting venous reflux?

Accepted Answer

Standing with weight on the contralateral leg.

Answer

Supine with the head of the bed flat.

Answer

Reverse Trendelenburg at a 15-degree angle.

Answer

Left lateral decubitus.

Question 5

Which of the following describes the proper technique for performing compressions during a lower extremity venous DVT study?

Accepted Answer

Compress the vein in the transverse plane every 1-2 cm.

Answer

Apply pressure in the longitudinal plane every 5 cm.

Answer

Use color Doppler to confirm coaptation at the groin, popliteal, and ankle.

Answer

Apply compressions only to symptomatic areas.

Question 6

A sonographer is evaluating a patient with a history of DVT one year ago. The common femoral vein appears patent but contains echogenic, thickened walls and the enclosed valve leaflets are immobile. These findings are most characteristic of:

Accepted Answer

Chronic post-thrombotic changes.

Answer

An acute, non-occlusive thrombus.

Answer

Venous aneurysm.

Answer

An arteriovenous fistula.