The subclavian vein begins at the outer border of the first rib where it joins with the axillary vein. It terminates by joining with the internal jugular vein to form the brachiocephalic vein at the medial border of the scalenus anterior muscle. It receives tributaries such as the external jugular, dorsal scapular, thoracic duct, and anterior jugular veins. The subclavian vein can be catheterized using either an infraclavicular or supraclavicular approach. Subclavian vein thrombosis typically presents as edema of the upper limb, especially after exercise. It can be either primary, such as from excessive arm use, or secondary like as a complication from an indwelling

2. Beining : It is the continuation of
axillary vein at the outer border of
the first rib
termination : at the medial border
of the scalenus anterior, where it
joins the internal jugular vein to
form brachiocephalic vein

3. Course: The subclavian vein forms
an arch across the pleura at a level
below the arch of the subclavian
artery.
The two arches are separated
from each other by the scalenus
anterior.
It seldom rises above the level of
the clavicle and possesses a pair
of valves about 2 cm from its
termination.

4. In front: Clavicle and subclavius
muscle.
Behind: Subclavian artery with
intervening scalenus anterior
muscle and phrenic nerve.
Below: First rib and cupola of
pleura

5. The following are the tributaries of the subclavian vein:
1. External jugular vein.
2. Dorsal scapular vein.
3. Thoracic duct on the left side and right lymphatic duct
on the right side
4. Anterior jugular vein.
5. Cephalic vein. Only sometimes

6. 1- Subclavian vein catheterization
2- Subclavian vein thrombosis

7. Subclavian vein catheterization:
The subclavian vein is located immediately posterior to the medial third of the
clavicle. It can be catheterized both from below (infra_x0002_clavicular
approach) and above (supraclavicular approach) the clavicle.
a) In infraclavicular approach, the needle is inserted just below the lower border
of the clavicle at the junction of its medial one-third and lateral two-third. The
needle is directed upwards and posteriorly towards the middle of the jugular
notch.
b) In supraclavicular approach, the needle is inserted at the junction of lateral
border of the clavicular head of sterno cleidomastoid and upper border of the
clavicle. The needle is directed downwards and medially towards the
mediastinum.

9. Subclavian vein thrombosis:
Clinically, it presents as edema of the upper limb especially
after exercise.
It can be spontaneous (primary) or secondary.
The primary thrombosis occasionally occurs due to
excessive and unaccustomed use of arm at the shoulder
joint.
The secondary thrombosis occurs as a complication of an
indwelling venous catheter.