The TIMI grade that indicates minimal perfusion corresponds to which number?

The TIMI grade that indicates minimal perfusion corresponds to which number?

• A. 1
• B. 0
• C. 2
• D. 3

Answer: (A)

TIMI flow grading assesses how well blood is moving through a coronary artery after an event like occlusion. Minimal perfusion is the grade described as penetration without perfusion. This means contrast reaches beyond the occlusion but does not fill the distal myocardial bed, reflecting only very limited flow. It’s a step above no perfusion (where nothing passes beyond the blockage) but far from partial or normal perfusion. If you see distal bed filling with contrast, that would be partial perfusion, and normal perfusion would show full, unobstructed distal filling. So minimal perfusion corresponds to the grade that shows penetration without true perfusion.

TIMI flow grading assesses how well blood is moving through a coronary artery after an event like occlusion. Minimal perfusion is the grade described as penetration without perfusion. This means contrast reaches beyond the occlusion but does not fill the distal myocardial bed, reflecting only very limited flow. It’s a step above no perfusion (where nothing passes beyond the blockage) but far from partial or normal perfusion. If you see distal bed filling with contrast, that would be partial perfusion, and normal perfusion would show full, unobstructed distal filling. So minimal perfusion corresponds to the grade that shows penetration without true perfusion.