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The Influence of Microcirculatory Dysfunction on the Resting Full Cycle Ratio Compared to Fractional Flow Reserve [PDF]
Cardiovascular Revascularization Medicine, 2023 The relation between the resting full cycle ratio (RFR) and fractional flow reserve (FFR) is not fully understood. This study aims to investigate the influence of coronary microvascular dysfunction, assessed by the index of microvascular resistance (IMR), on RFR compared to FFR in patients undergoing functional assessment for coronary stenosis.Two ...
Mikkel Hougaard +2 more
exaly +5 more sources
Acta Cardiologica, 2023 The resting full-cycle ratio (RFR), a new non-congestive resting index, is commonly used for physiological evaluations of coronary arteries. This study aims to evaluate the accuracy of RFR in detecting coronary artery stenosis with hemodynamic significance using fractional flow reserve (FFR) as the reference standard.
Jing Chang, Min Mao
exaly +4 more sources
Circulation Journal, 2020 Differences between resting full-cycle ratio (RFR) and diastolic pressure ratio (dPR) have not been sufficiently discussed. This study aimed to investigate if there is a difference in diagnostic performance between RFR and dPR for the functional lesion assessment and to assess if there are specific characteristics for discordant revascularization ...
Taishi Yonetsu +2 more
exaly +4 more sources
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Factors associated with discordance between fractional flow reserve and resting full-cycle ratio
Journal of Cardiology, 2022Resting full-cycle ratio (RFR), a non-hyperemic pressure ratio, is alternative to fractional flow reserve (FFR) for the evaluation of coronary artery stenoses. Although FFR and RFR results are often discordant using the cut-off values (0.80 and 0.89), factors associated with the discordance are unclear.
Hideki Kitahara +2 more
exaly +3 more sources
Heart and Vessels, 2021
The resting full-cycle ratio (RFR), a novel resting index, is well correlated with and shows good diagnostic accuracy to the fractional flow reserve (FFR). However, discordance results between the RFR and FFR have been observed to occur in about 20% of cases.
Hirohiko Ando +2 more
exaly +3 more sources
The resting full-cycle ratio (RFR), a novel resting index, is well correlated with and shows good diagnostic accuracy to the fractional flow reserve (FFR). However, discordance results between the RFR and FFR have been observed to occur in about 20% of cases.
Hirohiko Ando +2 more
exaly +3 more sources
Cardiovascular Intervention and Therapeutics, 2020
The diastolic pressure ratio (dPR) and resting full-cycle ratio (RFR) are considered to be almost identical to the instantaneous wave-free ratio (iFR) in the retrospective analysis of pooled data. The aim of this study was to investigate the direct comparison of iFR and these new resting indexes in real world practice.
Yoshiaki Kawase +12 more
openaire +2 more sources
The diastolic pressure ratio (dPR) and resting full-cycle ratio (RFR) are considered to be almost identical to the instantaneous wave-free ratio (iFR) in the retrospective analysis of pooled data. The aim of this study was to investigate the direct comparison of iFR and these new resting indexes in real world practice.
Yoshiaki Kawase +12 more
openaire +2 more sources
Catheterization and Cardiovascular Interventions, 2020
AbstractAimComparisons between the resting full‐cycle ratio (RFR), a new physiological resting index, and fractional flow reserve (FFR) in terms of prognostic value are limited. We aimed to identify the prognostic value of concordance between RFR and FFR and to determine the stability of measured RFR.Methods and ResultsWe measured FFR and RFR in 161 ...
Ryo Eto, Hiroaki Kawano
exaly +3 more sources
AbstractAimComparisons between the resting full‐cycle ratio (RFR), a new physiological resting index, and fractional flow reserve (FFR) in terms of prognostic value are limited. We aimed to identify the prognostic value of concordance between RFR and FFR and to determine the stability of measured RFR.Methods and ResultsWe measured FFR and RFR in 161 ...
Ryo Eto, Hiroaki Kawano
exaly +3 more sources
Journal of Cardiology
Fractional flow reserve (FFR) and non-hyperemic indices are invasive standards for evaluating functional significance of coronary stenosis. However, data are limited about outcomes in vessels with concordant and discordant physiological results, particularly with a ratio of distal coronary to aortic pressure (Pd/Pa) at rest.This was a single-center ...
Hideki Kitahara +2 more
exaly +3 more sources
Fractional flow reserve (FFR) and non-hyperemic indices are invasive standards for evaluating functional significance of coronary stenosis. However, data are limited about outcomes in vessels with concordant and discordant physiological results, particularly with a ratio of distal coronary to aortic pressure (Pd/Pa) at rest.This was a single-center ...
Hideki Kitahara +2 more
exaly +3 more sources
Resting Full-Cycle Ratio (RFR) in the Assessment of Left Main Coronary Disease: Caution Required
Heart, Lung and Circulation, 2020Hyperaemia-free indices have been gaining traction in recent times due to the practical advantages they offer over the fractional flow reserve (FFR) in the evaluation of angiographically intermediate coronary lesions. More recently, a new hyperaemia-free index, the resting full-cycle ratio (RFR), was described and found to correlate closely with the ...
Kevin, Liou, Sze-Yuan, Ooi
openaire +2 more sources
The role of gender in resting full-cycle ratio (RFR) guided coronary revascularization
International Journal of CardiologyGender-based differences in clinical outcomes of patients undergoing fractional flow reserved (FFR) guided coronary revascularization is well documented. This study aimed to compare resting full-cycle ratio (RFR) values between men and women and whether this translated into difference in clinical outcomes in patients who underwent RFR-guided coronary ...
Mina, Ghobrial +6 more
openaire +2 more sources