Results 11 to 20 of about 7,568,295 (241)

Increased dose of adenosine and the relationship between the resting full-cycle ratio and fractional flow reserve [PDF]

International Journal of Cardiology: Heart & Vasculature
Background: Intermediate coronary artery stenosis can be evaluated with fractional flow reserve (FFR) and resting full-cycle ratio (RFR) to determine if the stenosis is functionally significant.
Christian A. Christensen, Jens Trøan, Kirstine N. Hansen, Manijeh Noori, Anders Junker, Karsten Veien, Martin K. Christensen, Julia Ellert-Gregersen, Kristian Wachtell, Henrik S. Hansen, Jens F. Lassen, Diyako Qanie, Mikkel Hougaard, Lisette O. Jensen   +13 more
doaj   +8 more sources

Comparison of Nitroglycerin-Induced Pressure Ratio Drop and Resting Full-Cycle Ratio in a Pressure Wire Study [PDF]

Journal of Clinical Medicine
Background/Objectives: The acute drop in distal coronary pressure (Pd)-to-aortic pressure (Pa) ratio after intracoronary nitroglycerin (NTG-Pd/Pa) administration is an acceptable estimate of fractional flow reserve (FFR). We aimed to compare the diagnostic performance of NTG-Pd/Pa with that of the resting full-cycle ratio (RFR) in predicting the binary
Chun-Kai Chen, Min-Tsun Liao, Chien-Boon Jong   +2 more
exaly   +5 more sources

Anatomical Assessment vs. Pullback REsting full-cycle rAtio (RFR) Measurement for Evaluation of Focal and Diffuse CoronarY Disease: Rationale and Design of the “READY Register” [PDF]

Frontiers in Cardiovascular Medicine, 2021
Background: The morphology and functional severity of coronary stenosis show poor correlation. However, in clinical practice, the visual assessment of the invasive coronary angiography is still the most common means for evaluating coronary disease.
Zsolt Kőszegi, Zsolt Kőszegi, Zsolt Kőszegi, Balázs Berta, Gábor G. Tóth, Balázs Tar, Balázs Tar, Áron Üveges, Áron Üveges, András Ágoston, András Ágoston, Attila Szücs, Gábor Tamás Szabó, Gábor Tamás Szabó, Judit Barta, Judit Barta, Tibor Szük, Tibor Szük, Dániel Czuriga, Dániel Czuriga, András Komócsi, Zoltán Ruzsa   +21 more
doaj   +4 more sources

Correlation and consistency between resting full-cycle ratio and fractional flow reserve in assessing coronary artery function in a Chinese real-world cohort with non-ST-segment elevation acute coronary syndrome: a retrospective observational study [PDF]

BMJ Open
Objective The study aimed to investigate the correlation and consistency between resting full-cycle ratio (RFR) and fractional flow reserve (FFR) in functional assessment of coronary arteries in a Chinese real-world cohort with non-ST-segment elevation ...
Xu Liu, Ming Chen, Mengyao Li, Nan Guo, Yunfei Wang, Yumeng Lei, Mao Jiang, Shuaiyong Zhang, Yongxing Liu, Xufen Cao, Liqiu Yan   +10 more
doaj   +3 more sources

Prognostic impact of resting full-cycle ratio and diastolic non-hyperemic pressure ratios in patients with deferred revascularization [PDF]

Clinical Research in Cardiology, 2023
Abstract Background Non-hyperemic pressure ratios (NHPRs) like resting full-cycle ratio (RFR), diastolic pressure ratio during entire diastole (dPR[entire]) and diastolic pressure ratio during wave-free period (dPR[WFP]) are increasingly used to guide revascularization.
Hendrik Wienemann, Stephan Baldus, Marcel Halbach   +2 more
exaly   +6 more sources

Differential Impact of Renal Function on the Diagnostic Performance of Resting Full-Cycle Ratio in Patients With Renal Dysfunction [PDF]

Circulation Reports, 2022
Background: Physiological assessments using fractional flow reserve (FFR) and resting full-cycle ratio (RFR) have been recommended for revascularization decision making. Previous studies have shown a 20% rate of discordance between FFR and RFR. In this context, the correlation between RFR and FFR in patients with renal dysfunction remains unclear. This
Hiroaki Takashima, Shinichiro Sakurai, Masanobu Fujimoto   +2 more
exaly   +4 more sources

Comparison of Machine Learning Computed Tomography-Based Fractional Flow Reserve and Coronary CT Angiography-Derived Plaque Characteristics with Invasive Resting Full-Cycle Ratio [PDF]

Journal of Clinical Medicine, 2020
Background: The aim is to compare the machine learning-based coronary-computed tomography fractional flow reserve (CT-FFRML) and coronary-computed tomographic morphological plaque characteristics with the resting full-cycle ratio (RFRTM) as a novel ...
Daniel Overhoff, Dirk Loßnitzer, Tobias Becher   +2 more
exaly   +3 more sources

Usefulness of the Hybrid RFR-FFR Approach: Results of a Prospective and Multicenter Analysis of Diagnostic Agreement between RFR and FFR—The RECOPA (REsting Full-Cycle Ratio Comparation versus Fractional Flow Reserve (A Prospective Validation)) Study [PDF]

Journal of Interventional Cardiology, 2021
Background. The resting full‐cycle ratio (RFR) is a novel resting index which in contrast to the gold standard (fractional flow reserve (FFR)) does not require maximum hyperemia induction.
Juan Casanova-Sandoval, Diego Fernández-Rodríguez, Imanol Otaegui, Teresa Gil Jiménez, Marcos Rodríguez-Esteban, Kristian Rivera, Francisco Torres-Saura, Víctor Jiménez Díaz, Raymundo Ocaranza-Sánchez, Vicente Peral Disdier, Guillermo Sánchez-Elvira, Fernando Worner   +11 more
doaj   +2 more sources

Impact of coronary revascularization on clinical outcomes in vessels with discordant results of fractional flow reserve and resting full-cycle ratio. [PDF]

Heart Vessels
Abstract Fractional flow reserve (FFR) is an invasive standard, and resting full-cycle ratio (RFR), a non-hyperemic pressure ratio, is an alternative to FFR for evaluating the functional severity of coronary stenosis. However, the prognostic impact of coronary revascularization in vessels with discordant results of FFR and non ...
Yamazaki T, Saito Y, Nakamura S, Tanabe Y, Kitahara H, Kobayashi Y.   +5 more
europepmc   +4 more sources

Diagnostic performance of quantitative flow ratio versus fractional flow reserve and resting full-cycle ratio in intermediate coronary lesions

International Journal of Cardiology, 2022
Quantitative flow ratio (QFR) is a novel angiography-derived index aimed to assess the functional relevance of coronary stenoses without pressure wires and adenosine. Good diagnostic yield with the hyperemic fractional flow reserve (FFR) have been reported, while data on the comparison of QFR to non-hyperemic pressure ratios (NHPR) are scarce.In this ...
Hendrik, Wienemann, Christopher, Ameskamp, Hernán, Mejía-Rentería, Victor, Mauri, Christopher, Hohmann, Stephan, Baldus, Matti, Adam, Javier, Escaned, Marcel, Halbach   +8 more
openaire   +3 more sources