Total occlusion
No intra-luminal antegrade flow (TIMI 0) beyond the point of occlusion. However, antegrade flow beyond the total occlusion might be maintained by bridging collaterals and/or ipsi collaterals.
At the question ‘Specify which segments are diseased for lesion X' one should only fill out the segment number of the start of the Total Occlusion.


Small channels running in parallel to the vessel and connecting proximal vessel to distal and being responsible for the ipsilateral collateralization.

Note: In case of a Total Occlusion, we will not score any lesion distally (if applicable) since we are not sure about the actual situation prior to total occlusion opening.
At the question ‘Specify which segments are diseased for lesion X' one should only fill out the segment number of the start of the Total Occlusion.
- Blunt stump:

- Bridging collaterals:

Small channels running in parallel to the vessel and connecting proximal vessel to distal and being responsible for the ipsilateral collateralization.

Note: In case of a Total Occlusion, we will not score any lesion distally (if applicable) since we are not sure about the actual situation prior to total occlusion opening.