Table 1:

Modified carotid artery injury grading scale

GradeDescription
1Irregularity of the vessel wall or dissection/intramural hematoma with <25% luminal stenosis
2Intraluminal thrombus, raised intimal flap; dissection/intramural hematoma with ≥25% luminal narrowing or hemodynamically insignificant AVF

  1. <70% stenosis

  2. >70% stenosis

3Pseudoaneurysm

  1. <70% stenosis

  2. >70% stenosis

4Complete vascular occlusion
5Transection or hemodynamically significant AVF

  • Note:—AVF indicates arteriovenous fistula.