Grade I | Low risk |
Grade II | Angiographic risk |
Grade III | Medical risk age ≥70, severe IHD, AP, or AMI ≤6 months, CHF, uncontrolled hypertension, severe peripheral occlusive vascular disease |
Grade IV | High neurological risk |
Grade V | Progressive neurological deficit within 6 hours |
Grade VI | Previous ipsilateral CEA |
|
Mayo class III (n=65)
| |
Mayo class IV (n=8)
| |
Age ≥70 years
|
34
| Unstable neurological syndromes |
8
|
Age alone | 15 | Bilateral carotid disease | 4 |
Plus previous MI and/or PTCA | 8 | Contralateral carotid occlusion | 2 |
Plus previous CABG | 9 |
Mayo class VI (n=13)
| |
Plus CABG planned | 2 | Previous ipsilateral CEA |
12
|
Significant CAD
|
25
| Previous ipsilateral bypass |
1
|
CABG planned | 5 | | |
ACS <6 months | 9 | | |
Previous CABG/MI and LVEF <40% | 5 | | |
Previous PTCA and angina | 6 | | |
PVD
|
6
| | |
Alone | 1 | | |
Plus age ≥70 | 3 | | |
Plus significant CAD | 2 | | |