Background: Fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) disagree
on the hemodynamic significance of a coronary lesion in≈ 20% of cases. It is unknown …

Background Fractional flow reserve (FFR) and instantaneous wave‐free ratio (iFR) disagree
in about 20% of intermediate coronary lesions. As the physiological pattern of coronary …

Background. The instantaneous wave‐free ratio (iFR) is an invasive coronary physiological
index that is not inferior to fractional flow reserve‐(FFR‐) guided revascularization. The …

Background—Coronary flow reserve has extensive validation as a prognostic marker in
coronary disease. Although pressure-only fractional flow reserve (FFR) improves outcomes …

Background—Aim of the present study was to perform a meta-analysis of all available
studies comparing the instantaneous wave-free ratio (iFR) with fractional flow reserve (FFR) …

Background The instantaneous wave-free ratio (iFR) is an index used to assess the severity
of coronary-artery stenosis. The index has been tested against fractional flow reserve (FFR) …

Background The FiGARO (FFR versus iFR in Assessment of Hemodynamic Lesion
Significance, and an Explanation of Their Discrepancies) trial is a prospective registry …

Objectives: This study evaluated the physiologic characteristics of discordant lesions
between instantaneous wave-free ratio (iFR) and fractional flow reserve (FFR) and the …

Background: There has been a gradual upward creep of revascularization thresholds for
both fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR), before the clinical …

Objectives This study sought to assess the diagnostic performance of FFRangio (CathWorks,
Kfar Saba, Israel), an angiogram-derived fractional flow reserve (FFR) technology …