Predictive factors of discordance between the instantaneous wave-free ratio and fractional flow reserve.
Francois DerimayNils P JohnsonFrederik M ZimmermannJulien AdjedjNils WittBarry HenniganBon-Kwon KooEmanuele BarbatoGiovanni EspositoBruno TrimarcoGilles RioufolSeung-Jung ParkSérgio Bravo BaptistaGeorge S ChrysantAntonio Maria LeoneAllen JeremiasColin BerryBernard De BruyneKeith G OldroydNico H J PijlsWilliam F FearonPublished in: Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions (2019)
During iFR acquisition, stenosis location, stenosis degree, heart rate, age and use of beta blockers influence concordance with FFR and should be taken into account when interpreting iFR.