The Left Subclavian Artery Branches off directly from the arch of the aorta (as it travels down to supply oxygenated blood to the upper body). Passes between the anterior and middle scalene ...

The subclavian artery leaves the thorax by passing over the first rib and between these 2 portions of the scalenus anterior muscle. At the level of the first rib, the lower cervical nerve roots ...

Alternatively, auscultation of the subclavian artery can be done ... on a neurovascular bundle that passes between the anterior scalene and middle scalene muscles. There is some degree of ...

Imaging should include a left anterior oblique view, between 20 and 30°, to best profile the ostium of the left subclavian artery. A right anterior oblique view using the same degree of ...

During the operation, a significantly enlarged scalenus anterior muscle was found ... showing a hypertrophied subclavius muscle and obstruction of the subclavian vein. Surgery was performed, the first ...