Results 41 to 50 of about 152,141 (297)

Contrast medium Pd/Pa ratio in comparison to fractional flow reserve, quantitative flow ratio and instantaneous wave-free ratio for evaluation of intermediate coronary lesions [PDF]

Advances in Interventional Cardiology, 2020
Paweł Kleczyński, Artur Dziewierz, Łukasz Rzeszutko, Dariusz Dudek, Jacek Legutko   +4 more
doaj   +2 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   +1 more source

Diagnostic Performance of the Instantaneous Wave-Free Ratio [PDF]

Circulation: Cardiovascular Interventions, 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). Methods and Results— Published trials comparing the iFR with FFR were searched for in ...
De Rosa S., Polimeni A., Petraco R., Davies J. E., Indolfi C.   +4 more
openaire   +2 more sources

Diabetes mellitus and long-term safety of FFR and iFR-based coronary revascularization deferral

REC: Interventional Cardiology (English Ed.), 2022
Introduction and objectives: The safety of physiology-based revascularization in patients with diabetes mellitus has been scarcely investigated. Our objective was to determine the safety of deferring revascularization based on the fractional flow reserve
Alex F. Castro‐Mejía, Alejandro Travieso-González, María José Pérez-Vizcayno, Hernán Mejía‐Rentería, Iván J. Núñez-Gil, Pablo Salinas, Luis Nombela‐Franco, Pilar Jiménez‐Quevedo, Antonio Fernández‐Ortiz, Carlos Macaya, Javier Escaned, Nieves Gonzalo   +11 more
doaj   +1 more source

Correlation between Preoperative Coronary Artery Stenosis Severity Measured by Instantaneous Wave-Free Ratio and Intraoperative Transit Time Flow Measurement of Attached Grafts. [PDF]

Medicina (Kaunas), 2020
Tolegenuly A, Ordiene R, Mamedov A, Unikas R, Benetis R.   +4 more
europepmc   +3 more sources

A pressão coronária (às vezes) mente. . . [PDF]

, 2018
Comment on: Comparative analysis of fractional flow reserve and instantaneous wave-free ratio: Results of a five-year registry. [Rev Port Cardiol.
Baptista, SB, Raposo, L
core   +1 more source

Invasive versus noninvasive assessment of functional significance of intermediate coronary artery lesions

Journal of Medicine in Scientific Research, 2021
Background Myocardial perfusion imaging (MPI) is noninvasive test used for evaluation of functional significance of borderline coronary artery lesions.
Ahmed Zayed
doaj   +1 more source

Instantaneous Wave-free Ratio versus Fractional Flow Reserve to Guide PCI [PDF]

New England Journal of Medicine, 2017
The instantaneous wave-free ratio (iFR) is an index used to assess the severity of coronary-artery stenosis. The index has been tested against fractional flow reserve (FFR) in small trials, and the two measures have been found to have similar diagnostic accuracy. However, studies of clinical outcomes associated with the use of iFR are lacking. We aimed
Götberg, Matthias, Christiansen, Evald H, Gudmundsdottir, Ingibjörg J, Sandhall, Lennart, Danielewicz, Mikael, Jakobsen, Lars, Olsson, Sven-Erik, Öhagen, Patrik, Olsson, Hans, Omerovic, Elmir, Calais, Fredrik, Lindroos, Pontus, Maeng, Michael, Tödt, Tim, Venetsanos, Dimitrios, James, Stefan K, Kåregren, Amra, Nilsson, Margareta, Carlsson, Jörg, Hauer, Dario, Jensen, Jens, Karlsson, Ann-Charlotte, Panayi, Georgios, Erlinge, David, Fröbert, Ole   +24 more
openaire   +4 more sources

Waves and Windkessels reviewed

Artery Research, 2017
Pressure and flow are travelling waves and are reflected at many locations. The forward and reflected waves, obtained by wave separation, are compound waves.
Nicolaas Westerhof, Berend E. Westerhof
doaj   +1 more source

Influence of contrast media dose and osmolality on the diagnostic performance of contrast fractional flow reserve [PDF]

, 2017
Background—Contrast fractional flow reserve (cFFR) is a method for assessing functional significance of coronary stenoses, which is more accurate than resting indices and does not require adenosine.
Berry, Colin, Choi, Dong-Hyun, De Bruyne, Bernard, Fearon, William F., Gould, K. Lance, Jeremias, Allen, Johnson, Nils P., Kobayashi, Yuhei, Nishi, Takeshi, Oldroyd, Keith G., Pijls, Nico H.J.   +10 more
core   +1 more source