Results 31 to 40 of about 7,221,304 (242)

Simplifying the Assessment of Coronary Artery Stenosis by Enhancing Instantaneous Wave-Free Ratio. [PDF]

Cureus
Background and objective The intermediate range of instantaneous wave-free ratio (iFR) measurements presents various diagnostic uncertainties. This study aimed to evaluate contrast-enhanced iFR (iFRc) to determine its correlation with fractional flow reserve (FFR).
Mahmoud MSH, Mahmoud E, Elkhashab KAE, Fouad BZ, William AA, Saad MKEIK.   +5 more
europepmc   +3 more sources

Use of the Instantaneous Wave-free Ratio or Fractional Flow Reserve in PCI [PDF]

New England Journal of Medicine, 2017
Coronary revascularization guided by fractional flow reserve (FFR) is associated with better patient outcomes after the procedure than revascularization guided by angiography alone. It is unknown whether the instantaneous wave-free ratio (iFR), an alternative measure that does not require the administration of adenosine, will offer benefits similar to ...
Davies, J. E., Sen, S., Dehbi, H. -M., Al-Lamee, R., Petraco, R., Nijjer, S. S., Bhindi, R., Lehman, S. J., Walters, D., Sapontis, J., Janssens, L., Vrints, C. J., Khashaba, A., Laine, M., Van Belle, E., Krackhardt, F., Bojara, W., Going, O., Härle, T., Indolfi, C., Niccoli, G., Ribichini, F., Tanaka, N., Yokoi, H., Takashima, H., Kikuta, Y., Erglis, A., Vinhas, H., Canas Silva, P., Baptista, S. B., Alghamdi, A., Hellig, F., Koo, B. -K., Nam, C. -W., Shin, E. -S., Doh, J. -H., Brugaletta, S., Alegria-Barrero, E., Meuwissen, M., Piek, J. J., Van Royen, N., Sezer, M., Di Mario, C., Gerber, R. T., Malik, I. S., Sharp, A. S. P., Talwar, S., Tang, K., Samady, H., Altman, J., Seto, A. H., Singh, J., Jeremias, A., Matsuo, H., Kharbanda, R. K., Patel, M. R., Serruys, P., Escaned, J.   +57 more
openaire   +8 more sources

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

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

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

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

Instantaneous wave-free ratio and fractional flow reserve in clinical practice. [PDF]

Neth Heart J, 2018
To compare fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) measurements in an all-comer patient population with moderate coronary artery stenoses.Visual assessment of the severity of coronary artery stenoses is often discordant in moderate lesions.
Pisters R, Ilhan M, Veenstra LF, Gho BCG, Stein M, Hoorntje JCA, Rasoul S.   +6 more
europepmc   +4 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

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