thrombolysis in myocardial infarction flow grade
Also written as: TIMI — Thrombolysis In Myocardial Infarction
Standardized classification system (0-3) used to assess coronary blood flow during angiography.
Full Definition
The TIMI flow grade is a widely used angiographic classification system that rates coronary blood flow from 0 (no flow) to 3 (normal flow). Grade 0 indicates complete occlusion with no antegrade flow, Grade 1 shows minimal contrast penetration without filling the distal vessel, Grade 2 demonstrates delayed or sluggish antegrade flow that fills the distal vessel, and Grade 3 represents normal flow that fills the distal vessel briskly. This scoring system is essential for evaluating procedural success and patient outcomes in interventional cardiology.
Usage
Usage note: Always written as 'TIMI flow grade' or 'TIMI grade' followed by the number (0-3). Do not hyphenate.
In Context
- "Post-intervention angiography demonstrated restoration of TIMI 3 flow in the left anterior descending artery." — Catheterisation laboratory report
- "The patient presented with TIMI 0 flow in the right coronary artery, consistent with acute thrombotic occlusion." — Emergency department consultation note