fractional flow reserve
A physiological measurement that assesses the functional significance of coronary artery stenosis by comparing pressures.
Full Definition
Fractional flow reserve (FFR) is a diagnostic technique that measures the pressure difference across a coronary stenosis during maximal hyperemia to determine its hemodynamic significance. FFR values range from 0 to 1.0, with values ≤0.80 generally considered indicative of functionally significant stenosis requiring intervention. This measurement helps distinguish between anatomically significant lesions that may not be hemodynamically important and those that truly limit blood flow. FFR is increasingly used in conjunction with coronary angiography and is often referenced in cardiac imaging reports when assessing the need for revascularization.
Usage
Usage note: Commonly abbreviated as FFR; values are typically reported to two decimal places.
In Context
- "Fractional flow reserve measurement revealed a value of 0.78, indicating hemodynamically significant stenosis." — Cardiac catheterization report
- "The decision to proceed with percutaneous intervention was based on fractional flow reserve findings." — Interventional cardiology consultation