Professional
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In the Industry Vocabulary Test
FFR
Pronunciation: F-F-R
Also written as: FFR — Fractional Flow Reserve
Fractional flow reserve, a hemodynamic measurement assessing the functional significance of coronary stenosis.
Full Definition
A pressure-derived index that compares coronary blood flow in the presence of a stenosis to theoretical maximum flow in the absence of that stenosis. FFR is measured during cardiac catheterization using pressure wires and pharmacological hyperemia, typically with adenosine. An FFR value below 0.80 indicates hemodynamically significant stenosis requiring intervention, while values above this threshold suggest that medical therapy may be appropriate.
Usage
Usage note: Spell out on first reference in reports. Always expressed as decimal value (0.80, not 80%).
In Context
- "FFR measurement of 0.75 confirmed the hemodynamic significance of the moderate stenosis." — Catheter laboratory report
- "The interventional cardiologist used FFR guidance to determine which lesions required stenting." — Procedure note
Also known as
fractional flow reserve
pressure-derived flow index
Don't confuse with
CFR
iFR
IMR