Knowledge Check • The Blood Project

What are the three major types of leg vein clots (based on location)?

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1. Superficial vein thrombosis
2. Distal deep vein thrombosis
3. Proximal deep vein thrombosis

As a general rule, which of the following clots in the lower extremities are routinely anticoagulated?

a

Superficial femoral vein

b

Peroneal vein

This is a distal vein.

c

Femoral vein

This is a proximal vein.

d

Posterior tibial vein

This is a distal vein.

Which of the following should be anticoagulated?

a

Proximal DVT

b

Superficial vein thrombosis in absence of high risk for progression

c

Distal DVT with risk factor(s) for extension

What are the 2 major risk factors for extension in SVT?

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Isolated SVT ≥ 5 cm and/or located within 3 cm of the sapheno-femoral junction

SVT, superficial vein thrombosis

As a general rule, DAOCs are preferred to vitamin K antagonists for treatment of venous thromboembolism.

What is the most important exception?

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A patient with antiphospholipid syndrome

Match the condition with the treatment:

Large SVT

Distal DVT

Provoked DVT

DOAC x 3 months

Fonda x 45 days

Serial imaging

Correct! Sorry, Incorrect.

Abbreviations: DVT, deep vein thrombosis; SVT, superficial vein thrombosis; fonda, fondaparinux

True or false: in a patient with proximal deep vein thrombosis, anticoagulation is generally preferred over thrombolytic therapy and/or inferior vena cava filter.

a

True

b

False