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Descriptors for scoring the appearance of the ischemic versus nonischemic contralateral limb
| Score | Description |
|---|---|
| 0 | No difference |
| −1 | Mild redness |
| −2 | Dark redness |
| −3 | Purple coloration and/or mild necrosis |
| −4 | Severe necrosis and/or autoamputation of distal surgical limb |
