VABC Vascular Anatomy 5

Question 1

Which deep vein thrombosis location carries the highest risk of pulmonary embolism due to clot size and proximity to central circulation?

Accepted Answer

Iliofemoral segment

Answer

Iliofemoral DVT carries the highest risk of pulmonary embolism because clots in this proximal, large-diameter segment can dislodge and travel to the pulmonary circulation.

Question 2

The azygos vein drains into which central venous structure at approximately the level of T4?

Accepted Answer

Superior vena cava

Answer

The azygos vein arches over the right main bronchus at the T4 level and empties into the posterior aspect of the superior vena cava.

Question 3

Which valve is located at the junction of the subclavian and internal jugular veins and is clinically significant for preventing retrograde flow into the arm?

Accepted Answer

Jugulo-subclavian valve

Answer

The jugulo-subclavian valve (also called the subclavian-jugular junction valve) prevents retrograde flow and can affect catheter advancement during PICC insertion.

Question 4

The right lymphatic duct drains lymph from which quadrant of the body into the venous system?

Accepted Answer

Right upper quadrant: right head, neck, arm, and right thorax

Answer

The right lymphatic duct drains only the right upper quadrant (right head, neck, upper extremity, and right side of thorax) into the right subclavian vein.

Question 5

During tunneled catheter placement, the subcutaneous tunnel is created between the venous entry site and which exit location for a chest port?

Accepted Answer

Anterior chest wall below the clavicle

Answer

For a chest port, the subcutaneous tunnel connects the venous entry site (typically the subclavian or internal jugular) to the port pocket on the anterior chest wall below the clavicle.

(VABC) Vascular Access Board Certification Practice Test

(VABC) Vascular Access Board Certification Practice Test

VABC Vascular Anatomy 5