TIMI flow
Pronunciation: TIE-mee
Also written as: TIMI — Thrombolysis in Myocardial Infarction
Standardized angiographic grading system (0-3) for assessing coronary artery perfusion during cardiac catheterization.
Full Definition
TIMI (Thrombolysis in Myocardial Infarction) flow is a widely used angiographic classification system that grades coronary perfusion on a scale from 0 (no flow) to 3 (normal flow). TIMI 0 indicates complete occlusion, TIMI 1 shows minimal contrast penetration, TIMI 2 demonstrates delayed but complete filling, and TIMI 3 represents normal flow. In cardiovascular research, TIMI flow serves as both a procedural outcome measure and a predictor of clinical outcomes following percutaneous coronary intervention. Editors should verify that TIMI grades are properly defined and consistently reported in interventional studies.
Usage
Usage note: Always specify the numerical grade (0-3). Distinguish from TIMI risk score, which is a separate clinical tool.
In Context
- "Post-procedural TIMI 3 flow was achieved in 94% of patients in the intervention group." — PCI outcomes study
- "Patients with pre-procedural TIMI 0 flow had higher rates of contrast-induced nephropathy." — Interventional cardiology research