Results 31 to 40 of about 56,885 (337)

Análise comparativa do fractional flow reserve (FFR) e do instantaneous wave‐free ratio (iFR): resultados de um registo de 5 anos

Revista Portuguesa de Cardiologia, 2018
Resumo: Introdução e objetivos: A avaliação de lesões coronárias pelo instantaneous wave free ratio (iFR) tem gerado debate. Pretendeu‐se analisar o desempenho diagnóstico do iFR e o seu impacto na decisão de usar o fractional flow reserve (FFR) e nas ...
Miguel Nobre Menezes, Ana Rita G. Francisco, Pedro Carrilho Ferreira, Cláudia Jorge, Diogo Torres, Pedro Cardoso, José António Duarte, José Marques da Costa, Eduardo Infante de Oliveira, Fausto J. Pinto, Pedro Canas da Silva   +10 more
doaj   +1 more source

IFR dan Return On Asset di Indonesia [PDF]

, 2023
This study aims to examine the effect of IFR on return on assets. The sample used is a company in Indonesia that has internet financial statements. Multiple linear regression analysis is used to test research hypotheses.
Sayadi, Muhammad Hamdan
core  

Inferred changes of the IFR.

, 2021
We show data for model variants BC0 (blue) and BC1 (orange, time-dependent), for four different age groups (indicated in square brackets). The thick lines represent the IFR determined from the MAP parameters, the thin lines correspond to 100 samples of ...
Patrick Pietzonka (11751798), Erik Brorson (11751801), Robert L. Jack (1969324), Ronojoy Adhikari (366138), William Bankes (11751804), Michael E. Cates (2228362)   +5 more
core   +1 more source

Rate Pressure Products Affect the Relationship between the Fractional Flow Reserve and Instantaneous Wave-Free Ratio

Journal of Interventional Cardiology, 2020
The rate pressure product (RPP) is an index of myocardial metabolism that correlates closely with myocardial hemodynamics. The relationship between the RPP and the fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) is not known.
Suguru Ebihara, Hisao Otsuki, Hiroyuki Arashi, Junichi Yamaguchi, Nobuhisa Hagiwara   +4 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

Pre-Angioplasty Instantaneous Wave-Free Ratio Pullback Predicts Hemodynamic Outcome In Humans With Coronary Artery Disease: Primary Results of the International Multicenter iFR GRADIENT Registry.

JACC: Cardiovascular Interventions, 2018
OBJECTIVES The authors sought to evaluate the accuracy of instantaneous wave-Free Ratio (iFR) pullback measurements to predict post-percutaneous coronary intervention (PCI) physiological outcomes, and to quantify how often iFR pullback alters PCI ...
Y. Kikuta, Christopher M. Cook, Andrew S. P. Sharp, P. Salinas, Y. Kawase, Y. Shiono, A. Giavarini, M. Nakayama, S. de Rosa, S. Sen, S. Nijjer, R. Al-Lamee, R. Petraco, I. Malik, G. Mikhail, R. Kaprielian, G. Wijntjens, S. Mori, A. Hagikura, M. Mates, A. Mizuno, F. Hellig, Kelvin K. Lee, L. Janssens, K. Horie, S. Mohdnazri, Raul Herrera, F. Krackhardt, M. Yamawaki, J. Davies, Hideo Takebayashi, Thomas R. Keeble, Sei-ichi Haruta, F. Ribichini, C. Indolfi, J. Mayet, D. Francis, J. Piek, C. di Mario, J. Escaned, H. Matsuo, J. Davies   +41 more
semanticscholar   +1 more source

Comparison of Fractional Flow Reserve with Resting Non-Hyperemic Indices in Patients with Coronary Artery Disease

Journal of Cardiovascular Development and Disease, 2023
Guidelines recommend using hyperemic (FFR) and non-hyperemic (iFR/RFR) methods of evaluating coronary artery stenoses in patients with coronary artery disease.
Barbara Zdzierak, Wojciech Zasada, Agata Krawczyk-Ożóg, Tomasz Rakowski, Stanisław Bartuś, Andrzej Surdacki, Artur Dziewierz   +6 more
doaj   +1 more source

Hemodynamic and Lesion Characteristics Associated with Discordance between the Instantaneous Wave-Free Ratio and Fractional Flow Reserve

Journal of Interventional Cardiology, 2019
Background. The instantaneous wave-free ratio (iFR) is an invasive coronary physiological index that is not inferior to fractional flow reserve- (FFR-) guided revascularization. The indexes of iFR and FFR are similar and closely correlated, but there are
Hiroyuki Arashi, Natsuko Satomi, Issei Ishida, Kanintorn Soontorndhada, Suguru Ebihara, Kazuki Tanaka, Hisao Otsuki, Masashi Nakao, Kentaro Jujo, Junichi Yamaguchi, Nobuhisa Hagiwara   +10 more
doaj   +1 more source

Flight planning according to IFR rules

, 2022
The bachelor thesis describes the issue of IFR flight planning by analysing the individual phases of an IFR flight. The bachelor thesis includes the introduction of software tools and applications used for the IFR route planning, pre-flight preparation ...
Mudrych, Alex
core   +1 more source

Hybrid Instantaneous Wave-Free Ratio–Fractional Flow Reserve versus Fractional Flow Reserve in the Real World

Frontiers in Cardiovascular Medicine, 2017
BackgroundThe instantaneous wave-free ratio (iFR) is a novel method to assess the ischemic potential of coronary artery stenoses. Clinical trial data have shown that iFR has acceptable diagnostic agreement with fractional flow reserve (FFR), the ...
Kara Shuttleworth, Kristina Smith, Jonathan Watt, Jamie A. L. Smith, Stephen J. Leslie, Stephen J. Leslie   +5 more
doaj   +1 more source