RVT Peripheral Venous Testing 4

Question 1

What is the primary purpose of the Valsalva maneuver during a lower extremity venous duplex examination?

Accepted Answer

Test valve competence at the saphenofemoral junction

Answer

The Valsalva maneuver increases intra-abdominal pressure, halting venous return and testing competence of the saphenofemoral junction valves.

Question 2

A 45-year-old woman with varicose veins has duplex showing reflux at the saphenofemoral junction. Which additional vein should be systematically evaluated for a source of reflux?

Accepted Answer

Saphenopopliteal junction and small saphenous vein

Answer

The saphenopopliteal junction and small saphenous vein are a second major potential source of saphenous reflux and must be assessed.

Question 3

In venous duplex imaging, 'augmentation' refers to which of the following?

Accepted Answer

Increase in venous flow velocity with distal manual compression

Answer

Augmentation is the transient increase in venous flow velocity produced by squeezing the limb distal to the transducer.

Question 4

Which of the following perforator veins connects the posterior arch tributary of the great saphenous vein to the posterior tibial veins?

Accepted Answer

Cockett perforators

Answer

The Cockett perforators (paratibial perforators) connect the posterior arch vein or its tributaries to the posterior tibial veins.

Question 5

A sonographer identifies a hypoechoic structure adjacent to the popliteal vein that does not compress and shows no internal flow. What is the most likely diagnosis?

Accepted Answer

Baker's cyst

Answer

A Baker's (popliteal) cyst is a common anechoic or hypoechoic structure in the popliteal fossa with no internal flow that can mimic DVT clinically.

(RVT) Registered Vascular Technologist Practice Test

(RVT) Registered Vascular Technologist Practice Test

RVT Peripheral Venous Testing 4