Venous Valvular Insufficiency Testing (Lecture 8)

Question 1

What is CVVI?

Answer 1

Chronic venous valvular insufficiency

Question 2

What can valvular insufficiency be from?

Answer 2

Valve damage or can be intermittent as a function of venous dilatation

Question 3

What is the primary vein of concern for CVVI?

Answer 3

Great saphenous vein

Question 4

Hypoplasia/agenesis below the knee is common for which vein?

Answer 4

GSV

Question 5

What are the two major valves of the GSV?

Answer 5

Terminal valve, preterminal valve

Question 6

What is the most common SSV (small saphenous vein) termination?

Answer 6

At the popliteal vein via the saphenopopliteal junction

Question 7

What are the 3 types of disorders that affect venous biscupid valves?

Answer 7

Leakage, agenesis, damage

Question 8

What are the two major diagnostic goals of CVVI?

Answer 8

1. to exclude deep venous obstruction or acute thrombosis
2. to evaluate the function of venous valves, or reflux detection

Question 9

In venous studies, normal antegrade flow towards the heart should be displayed where on the baseline?

Answer 9

Below

Question 10

In venous studies, abnormal retrograde flow towards the feet should be displayed where on the baseline?

Answer 10

Above

Question 11

‘Spontaneous, phasic with respiration, and unidirectional towards the heart’ describes what kind of venous flow waveform?’

Answer 11

Normal

Question 12

In normal subjects, how fast do the saphenous vein valves close?

Answer 12

Less than 0.5 s

Question 13

In normal subjects, how fast do the deep femoropopliteal valves close?

Answer 13

Less than 1.0 s

Question 14

In normal subjects, how fast do the perforating vein valves close?

Answer 14

Less than 0.35 s