TIMI grade 1 perfusion is defined as which?

TIMI grade 1 perfusion is defined as which?

• A. Minimal perfusion
• B. No perfusion
• C. Partial perfusion
• D. Complete perfusion

Answer: (A)

TIMI flow grades describe how well blood is reaching the distal coronary bed after reperfusion. In this scale, grade one means that contrast penetrates beyond the blockage but there is minimal perfusion of the distal vessel — you see some passage past the lesion, but the downstream territory is poorly perfused. This distinguishes it from no perfusion (no forward flow beyond the occlusion) and from partial or complete perfusion (which correspond to higher grades). So minimal perfusion best fits the description of TIMI grade one.

TIMI flow grades describe how well blood is reaching the distal coronary bed after reperfusion. In this scale, grade one means that contrast penetrates beyond the blockage but there is minimal perfusion of the distal vessel — you see some passage past the lesion, but the downstream territory is poorly perfused. This distinguishes it from no perfusion (no forward flow beyond the occlusion) and from partial or complete perfusion (which correspond to higher grades). So minimal perfusion best fits the description of TIMI grade one.