Results 121 to 130 of about 301,214 (427)

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   +4 more sources

Accuracy of Fractional Flow Reserve Derived From Coronary Angiography

Circulation, 2019
Background: Measuring fractional flow reserve (FFR) with a pressure wire remains underutilized because of the invasiveness of guide wire placement or the need for a hyperemic stimulus.
W. Fearon, S. Achenbach, T. Engstrøm, A. Assali, R. Shlofmitz, A. Jeremias, S. Fournier, A. Kirtane, R. Kornowski, G. Greenberg, R. Jubeh, D. Kolansky, T. McAndrew, O. Dressler, A. Maehara, M. Matsumura, M. Leon, B. de Bruyne   +17 more
semanticscholar   +1 more source

Invasive physiological indices to determine the functional significance of coronary stenosis

International Journal of Cardiology: Heart & Vasculature, 2018
Physiological measurements are now commonly used to assess coronary lesions in the cardiac catheterisation laboratory, and this practice is evidence-based and supported by clinical guidelines. Fractional flow reserve is currently the gold standard method
Firas R. AL-Obaidi, William F. Fearon, Andy S.C. Yong   +2 more
doaj  

Functional assessment of coronary stenosis: alternative hyperemic, nonhyperemic, and angiographic indexes

REC: Interventional Cardiology (English Ed.)
Assessment of the functional significance of coronary artery stenoses to guide percutaneous coronary intervention is widely performed using pressure wire fractional flow reserve during adenosine- or adenosine triphosphate-induced hyperemia.
Federico Vergni, Giuliano Fiore, Francesco Pellone, Mario Luzi   +3 more
doaj   +1 more source

Resource Reservation in Backhaul and Radio Access Network with Uncertain User Demands [PDF]

arXiv, 2021
Resource reservation is an essential step to enable wireless data networks to support a wide range of user demands. In this paper, we consider the problem of joint resource reservation in the backhaul and Radio Access Network (RAN) based on the statistics of user demands and channel states, and also network availability. The goal is to maximize the sum
arxiv  

Diabetes does not impact the diagnostic performance of contrast-based fractional flow reserve: insights from the CONTRAST study [PDF]

, 2017
Background: Adenosine-free coronary pressure wire metrics have been proposed to test the functional significance of coronary artery lesions, but it is unexplored whether their diagnostic performance might be altered in patients with diabetes. Methods:
Adjedj, Julien, Barbato, Emanuele, Esposito, Giovanni, Fearon, William, Ferrone, Marco, Gargiulo, Giuseppe, Hennigan, Barry, Jeremias, Allen, Johnson, Nils, Matsumura, Mitsuaki, On behalf of the CONTRST Study Investigators, Stabile, Eugenio, Trimarco, Bruno, Zimmermann, Frederik   +13 more
core   +2 more sources

How Required Reserve Ratio Affects Distribution and Velocity of Money [PDF]

, 2005
In this paper the dependence of wealth distribution and the velocity of money on the required reserve ratio is examined based on a random transfer model of money and computer simulations. A fractional reserve banking system is introduced to the model where money creation can be achieved by bank loans and the monetary aggregate is determined by the ...
arxiv   +1 more source

The Multi-center Evaluation of the Accuracy of the Contrast MEdium INduced Pd/Pa RaTiO in Predicting FFR (MEMENTO-FFR) Study. [PDF]

, 2016
AIMS: Adenosine administration is needed for the achievement of maximal hyperaemia fractional flow reserve (FFR) assessment. The objective was to test the accuracy of Pd/Pa ratio registered during submaximal hyperaemia induced by non-ionic contrast ...
Amabile, N, Baptista, SB, Franco Pelaez, JA, et al., Leone, A, Martin-Reyes, R, Raposo, L   +5 more
core   +1 more source

Diagnostic Performance of In‐Procedure Angiography‐Derived Quantitative Flow Reserve Compared to Pressure‐Derived Fractional Flow Reserve: The FAVOR II Europe‐Japan Study

Journal of the American Heart Association : Cardiovascular and Cerebrovascular Disease, 2018
Background Quantitative flow ratio (QFR) is a novel modality for physiological lesion assessment based on 3‐dimensional vessel reconstructions and contrast flow velocity estimates.
J. Westra, B. K. Andersen, G. Campo, H. Matsuo, L. Koltowski, A. Eftekhari, Tommy Liu, L. Di Serafino, D. di Girolamo, J. Escaned, H. Nef, C. Naber, M. Barbierato, S. Tu, O. Neghabat, M. Madsen, M. Tebaldi, T. Tanigaki, J. Kochman, S. Somi, G. Esposito, G. Mercone, H. Mejía-Rentería, F. Ronco, H. Bøtker, W. Wijns, E. Christiansen, N. Holm   +27 more
semanticscholar   +1 more source

FAME 2 – The best initial strategy for patients with stable coronary artery disease: Do we have an answer at last? [PDF]

Global Cardiology Science & Practice, 2012
Results of the Fractional flow reserve versus Angiography for Multivessel Evaluation 2 (FAME 2) trial were recently presented at the European Society of Cardiology (ESC) meeting in Munich and published concurrently in the New England Journal of Medicine1.
Ahmed M ElGuindy, Robert O. Bonow
doaj   +1 more source