Grade/category |
Prognosis |
Clinical features |
Treatment | |
Sensory loss |
Motor deficit | |||
I. Viable |
Not immediately threatened |
None |
None |
Thrombolysis or surgery |
II. Threatened | ||||
IIa. Marginally |
Salvageable if promptly treated |
None or minimal (toes) |
None |
Thrombolysis or surgery |
IIb. Immediately |
Salvageable if promptly revascularized |
More than toes |
Mild or moderate |
Surgery, may be combined with thrombolysis |
III. Irreversible |
Inevitable high-level amputation or permanent nerve damage |
Profound, anesthetic |
Profound, paralysis (rigor) |
Primary amputation |
Adapted from J Vasc Surg. 1997;26(3):517-38 and Eur Heart J. 2011;32(22):2851-906. |