Modified TIMI classification3
| Classification |
|---|
| 0 = No perfusion |
| 1 = Perfusion past the initial obstruction but limited distal branch filling with little or slow distal perfusion |
| 2a = Perfusion of less than half of the vascular distribution of the occluded artery (eg, filling and perfusion through 1 M2 division) |
| 2b = Perfusion of half or greater of the vascular distribution of the occluded artery (eg, filling and perfusion through 2 or more M2 divisions) |
| 3 = Full perfusion with filling of all distal branches |