Cervical Vascular Organ Injury Scale

Blood Vessel

Grade

thyroid veins

I

common facial vein

I

external jugular vein

I

non-named arterial branch

I

non-named venous branch

I

external carotid arterial branches

II

thyrocervical trunk or primary branches

II

internal jugular vein

II

external carotid artery

III

subclavian vein

III

vertebral artery

III

common carotid artery

IV

subclavian artery

IV

internal carotid artery, extracranial

V