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Coronary Physiology

FFR TestingFractional Flow Reserve

A specialized pressure-sensing wire diagnostic technique performed during coronary angiography to assess if a blockage truly limits blood flow to your heart.

FFR Diagnostic Screen Waveforms

What is Fractional Flow Reserve (FFR)?

Fractional Flow Reserve (FFR) is a pressure-based physiological measurement performed during coronary angiography. Rather than relying solely on visual estimates of artery narrowing (which can be subjective), FFR provides an objective calculation of blood flow limitations. It determines whether a specific coronary artery blockage is severe enough to cause ischemia (reduced blood supply) to the heart muscle, directly guiding stenting decisions.

DIAGNOSTIC CRITERIA

Why FFR is Important for Stent Decisions

Prevents Unnecessary StentingBy identifying which blockages do not restrict blood flow, it spares patients from unnecessary stenting procedures.
Physiological Decision MakingMoves beyond simple visual inspection of X-ray shadows to measure actual arterial pressure and flow physiology.
Targeted Multi-Vessel StrategyPinpoints the exact narrowing that requires treatment when multiple blocks are present in the arteries.
Significantly Improves OutcomesClinical trials demonstrate that FFR-guided stenting produces superior long-term results compared to angiography-guided stenting alone.
THRESHOLD INDEX

Understanding FFR Values

FFR ≥ 0.80Indicates normal or non-significant flow reduction. Stenting is generally NOT beneficial, and medical management is preferred.
FFR < 0.80Indicates significant blood flow limitation. Balloon and stenting interventions are highly beneficial.
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