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AAST cervical vascular injury scale

AAST cervical vascular injury scale
Grade* Description of injury
I Thyroid vein
Common facial vein
External jugular vein
Non-named arterial/venous branches
II External carotid arterial branches (ascending pharyngeal, superior thyroid, Ingual, facial maxillary, occipital, posterior auricular)
Thyrocervical trunk or primary branches
Internal jugular vein
External carotid artery
III Subclavian vein
Vertebral artery
Common carotid artery
IV Subclavian artery
Internal carotid artery (extracranial)
V  
AAST: American Association for the Surgery of Trauma.
* Increase one grade for multiple grade III or IV injuries involving more than 50% vessel circumference. Decrease one grade for less than 25% vessel circumference disruption for grade IV or V.
Reproduced with permission from: Moore EE, Malangoni MA, Cogbill TH, et al. Organ injury scaling VII: cervical vascular, peripheral vascular, adrenal, penis, testis, and scrotum. J Trauma 1996; 41:523. Copyright © 1996 Lippincott Williams & Wilkins. Available at: https://www.aast.org/resources-detail/injury-scoring-scale#cervical (Accessed on December 10, 2019).
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