Results 71 to 80 of about 7,220,590 (185)

IMPACT OF AGEING ON THE FUNCTIONAL EVALUATION OF INTERMEDIATE CORONARY STENOSES WITH ADENOSINE-BASED FRACTIONAL FLOW RESERVE (FFR) AND INSTANTANEOUS WAVE-FREE RATIO (IFR)

Journal of the American College of Cardiology, 2020
The optimal strategy for assessing the ischemic significance of intermediate coronary stenoses is still debated, with adenosine-induced Fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) representing the most applied techniques.
Monica Verdoia, Rocco Gioscia, Matteo Nardin, Federica Negro, Francesco Tonon, Harry Suryapranata, Elvin Kedhi, Marco Marcolongo, Giuseppe De Luca   +8 more
openaire   +1 more source

Rate Pressure Products Affect the Relationship between the Fractional Flow Reserve and Instantaneous Wave-Free Ratio

Journal of Interventional Cardiology, 2020
The rate pressure product (RPP) is an index of myocardial metabolism that correlates closely with myocardial hemodynamics. The relationship between the RPP and the fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) is not known.
Suguru Ebihara, Hisao Otsuki, Hiroyuki Arashi, Junichi Yamaguchi, Nobuhisa Hagiwara   +4 more
doaj   +1 more source

Catheterization Techniques for Anomalous Aortic Origin of Coronary Arteries

Catheterization and Cardiovascular Interventions, Volume 105, Issue 4, Page 825-837, March 1, 2025.
ABSTRACT Anomalous aortic origin of a coronary artery (AAOCA) is a rare congenital anomaly with a large spectrum of anatomical variations. Selective engagement of an AAOCA can present challenges during cardiac catheterization. A comprehensive understanding of the characteristics of major AAOCA can effectively assist operators for selecting and ...
Xavier Halna du Fretay, Olivier Boudvillain, Athanasios Koutsoukis, Philippe Degrell, Patrick Dupouy, Pierre Aubry   +5 more
wiley   +1 more source

TCT-65 Reclassification of revascularization strategy with instantaneous wave-free ratio and fractional flow reserve: A report from the iFR-SWEDEHEART study

Journal of the American College of Cardiology, 2017
Instantaneous wave-free ratio (iFR) is an index used to measure the severity of coronary artery stenosis. iFR has been shown to be noninferior to fractional flow reserve (FFR) in two large prospective and randomized controlled trials.
Pontus Andell, Ole Frobert, Evald Christiansen, Ingibjorg Gudmundsdottir, Lennart Sandhall, David Erlinge, Matthias Götberg   +6 more
openaire   +1 more source

Uncertainty Quantification and Sensitivity Analysis for Non‐invasive Model‐Based Instantaneous Wave‐Free Ratio Prediction

International Journal for Numerical Methods in Biomedical Engineering, Volume 41, Issue 1, January 2025.
We propose a 1D‐0D transient solver with a distributed stenosis model and validate its performance versus results obtained with a 3D model and invasive measurements. Next, we assess how uncertainties in geometrical parameters and boundary conditions impact iFR prediction.
Caterina Dalmaso, Fredrik Eikeland Fossan, Anders Tjellaug Bråten, Lucas Omar Müller   +3 more
wiley   +1 more source

Diagnostic Performance of the Instantaneous Wave-Free Ratio

, 2018
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).
Ciro Indolfi, Salvatore De Rosa, Ricardo Petraco, Alberto Polimeni, Justin E. Davies   +4 more
core   +1 more source

Instantaneous Wave-Free Ratio: Novel Adenosine-Free Method to Assess Intracoronary Physiology

, 2023
Fractional flow reserve assessment was accepted as a crucial strategy in stable patients undergoing coronary angiography without prior noninvasive evaluation in the presence of borderline lesions and in patients with multivessel coronary artery disease ...
IGLESİAS, Juan F., RAFFİ, Marco, Degrauwe, Sophie, ÇİMCİ, Murat, Musayeb, Yazan, KARADAĞ, Bilgehan   +5 more
core   +1 more source

Hemodynamic and Lesion Characteristics Associated with Discordance between the Instantaneous Wave-Free Ratio and Fractional Flow Reserve

Journal of Interventional Cardiology, 2019
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 indexes of iFR and FFR are similar and closely correlated, but there are
Hiroyuki Arashi, Natsuko Satomi, Issei Ishida, Kanintorn Soontorndhada, Suguru Ebihara, Kazuki Tanaka, Hisao Otsuki, Masashi Nakao, Kentaro Jujo, Junichi Yamaguchi, Nobuhisa Hagiwara   +10 more
doaj   +1 more source

OPTIMAL CUT-OFF POINTS OF INSTANTANEOUS WAVE-FREE RATIO IN THE ASSESSMENT OF THE FUNCTIONAL SIGNIFICANCE OF CORONARY ARTERY STENOSES USING NONINVASIVE METHODS AS REFERENCE

Евразийский Кардиологический Журнал, 2016
Objective: the aim of our study was to determine the optimal instantaneous wave-free ratio (iFR) cut-off points in assessing the functional significance of intermediate coronary artery stenoses in patients with chronic coronary artery diseases (CAD ...
D. I. Darenskiy, V. V. Gramovich, E. A. Zharova, M. G. Mitroshkin, R. V. Atanesyan, G. N. Bakashvili, Y. G. Matchin   +6 more
doaj   +1 more source

P6173Plaque characteristics on coronary CT angiography in case of discordance between fractional flow reserve (FFR) and instantaneous wave-free ratio (IFR)

European Heart Journal, 2019
Abstract Background The usefulness of fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) evaluation has been confirmed in the determination of revascularization of coronary artery disease.
C Aoshima, S Fujimoto, Y Kawaguchi, T Dohi, E Kato, K Takamura, Y Kamo, M Hiki, Y Kato, I Okai, S Okazaki, K Kumamaru, H Daida   +12 more
openaire   +1 more source