What does an mTICI grade 0 indicate?

What does an mTICI grade 0 indicate?

• A. No reperfusion
• B. Flow beyond occlusion, without distal branch reperfusion
• C. Reperfusion <50% of downstream target arterial region
• D. Complete reperfusion of downstream target arterial region and distal branches

Answer: (A)

mTICI grading measures how much blood flow to the downstream brain tissue is restored after reperfusion therapy. A grade of zero means there is no perfusion beyond the point of occlusion—no distal flow is achieved in the territory that was blocked. In other words, the downstream brain tissue remains unreperfused. This is the lowest level of reperfusion, signaling no immediate restoration of blood flow. As reperfusion improves, you’d see some flow past the occlusion, partial or near-complete reperfusion of the downstream region, and finally complete reperfusion of the target territory and distal branches. So no reperfusion is the best description for this grade.

mTICI grading measures how much blood flow to the downstream brain tissue is restored after reperfusion therapy. A grade of zero means there is no perfusion beyond the point of occlusion—no distal flow is achieved in the territory that was blocked. In other words, the downstream brain tissue remains unreperfused. This is the lowest level of reperfusion, signaling no immediate restoration of blood flow. As reperfusion improves, you’d see some flow past the occlusion, partial or near-complete reperfusion of the downstream region, and finally complete reperfusion of the target territory and distal branches. So no reperfusion is the best description for this grade.