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TIMI myocardial perfusion grades.
| TMP Grade | Description |
|---|---|
| 0 | No apparent tissue level perfusion or no blush |
| 1 | Blush present but no clearance from microvasculature |
| 2 | Blush clears slowly (blush is strongly persistent and diminishes minimally or not at all during 3 cardiac cycles of the washout phase |
| 3 | Blush begins to clear during washout (blush is minimally persistent after 3 cardiac cycles of washout |
