Results 31 to 40 of about 152,362 (259)

Impact of target coronary artery stenosis severity measured by instantaneous wave-free ratio on to bypassed graft patency [PDF]

Ķazaķstannyṇ Klinikalyķ Medicinasy, 2021
Background: This study aimed to assess the impact of the measurement of the degree of target coronary artery stenosis using the instantaneous wave-free ratio (iFR) on patency of attached grafts.
Almas Tolegenuly, Arslan Mamedov, Rimantas Benetis   +2 more
doaj   +1 more source

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

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

Measurement of Instantaneous Wave-free Ratio through a Diagnostic Catheter: Comparison of the Results between 4Fr and 5Fr

Artery Research, 2020
Background: Clinical evidence of coronary pressure assessment through a diagnostic catheter is limited. The aim of this study was to assess the difference, safety, and rate of successful measurement of Instantaneous Wave-free Ratio (iFR) through 4Fr and ...
Shinichiro Masuda, Ryota Uemura, Yoshiyuki Saiki, Tatsuo Haraki, Takeshi Lee   +4 more
doaj   +1 more source

Safety of the Deferral of Coronary Revascularization on the Basis of Instantaneous Wave-Free Ratio and Fractional Flow Reserve Measurements in Stable Coronary Artery Disease and Acute Coronary Syndromes. [PDF]

, 2018
OBJECTIVES: The aim of this study was to investigate the clinical outcomes of patients deferred from coronary revascularization on the basis of instantaneous wave-free ratio (iFR) or fractional flow reserve (FFR) measurements in stable angina pectoris ...
Al-Lamee, R, Alegria-Barrero, E, Alghamdi, A, Altman, J, Ambrosia, A, Baptista, SB, Bertilsson, M, et al., Cook, CM, Dehbi, HM, Escaned, J, Mejía-Rentería, H, Ryan, N   +11 more
core   +1 more source

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