Results 11 to 20 of about 8,118,179 (242)

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]

J Clin Med
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
Jong CB, Lu TS, Liao MT, Xu JL, Chen CK, Kuo JC, Wu CC.   +6 more
europepmc   +5 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

Comparison of Fractional Flow Reserve and Resting Full-Cycle Ratio in the Functional Assessment of Coronary Artery Stenosis in Patients with Non-ST-Segment Elevation Acute Coronary Syndrome [PDF]

Reviews in Cardiovascular Medicine
Background: This study investigated factors influencing discrepancies between fractional flow reserve (FFR) and resting full-cycle ratio (RFR) in the functional assessment of coronary artery stenosis in patients with non-ST-segment elevation acute ...
Yumeng Lei, Mao Jiang, Xu Liu, Shuaiyong Zhang, Mengyao Li, Yunfei Wang, Ming Chen, Nan Guo, Yongxing Liu, Xufen Cao, Liqiu Yan   +10 more
doaj   +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   +4 more sources

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

Circ Rep, 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
Ohashi H, Nawano T, Takashima H, Ando H, Goto R, Suzuki A, Sakurai S, Suzuki W, Nakano Y, Sawada H, Fujimoto M, Sakai K, Suzuki Y, Waseda K, Amano T.   +14 more
europepmc   +4 more sources

Coronary Flow Variations Following Percutaneous Coronary Intervention Affect Diastolic Nonhyperemic Pressure Ratios More Than the Whole Cycle Ratios

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background Post–percutaneous coronary intervention (PCI) fractional flow reserve ≥0.90 is an accepted marker of procedural success, and a cutoff of ≥0.95 has recently been proposed for post‐PCI instantaneous wave‐free ratio.
Muhammad Aetesam‐ur‐Rahman, Tian X. Zhao, Kitty Paques, Joana Oliveira, Bharat Khialani, Stephen Kyranis, Denise M. Braganza, Sarah C. Clarke, Martin R. Bennett, Nick E. J. West, Stephen P. Hoole   +10 more
doaj   +2 more sources

Potential value of saline-induced Pd/Pa ratio in patients with coronary artery stenosis [PDF]

Frontiers in Cardiovascular Medicine, 2023
BackgroundFractional flow reserve (FFR) is the current gold standard for identifying myocardial ischemia in individuals with coronary artery stenosis.
Hiroyuki Kiriyama, Arihiro Kiyosue, Arihiro Kiyosue, Shun Minatsuki, Takuya Kawahara, Susumu Katsushika, Tatsuya Kamon, Kazutoshi Hirose, Hiroki Shinohara, Mizuki Miura, Akihito Saito, Hironobu Kikuchi, Satoshi Kodera, Masaru Hatano, Jiro Ando, Masahiro Myojo, Nobuhiko Itoh, Keisuke Yamamoto, Hiroshi Ikenouchi, Norifumi Takeda, Issei Komuro   +20 more
doaj   +2 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

Microvascular resistance reserve: insights into discordant resting and hyperemic epicardial coronary physiology [PDF]

Frontiers in Cardiovascular Medicine
IntroductionDiscordance between resting and hyperemic epicardial physiology is commonbut mechanistically unclear. Microvascular resistance reserve (MRR), a novelindex of vasodilatory capacity, may provide insight.
Aswin Babu, Aswin Babu, Isobelle Goldrick, Billy Broadbent, Rania Faeq, Charley Budgeon, Roopa Krishnamoorthy, Primero Ng, Cara Barnes, Dipen Sankhesara, Avadhesh Saraswat, Imran Shiekh, James Marangou, Richard Alcock, Rachel Orme, Carl Schultz, Carl Schultz, Graham S. Hillis, Graham S. Hillis, Jon Spiro, Jon Spiro   +20 more
doaj   +2 more sources