Results 11 to 20 of about 152,362 (259)

Fractional Flow Reserve Versus Instantaneous Wave‐Free Ratio in Assessment of Lesion Hemodynamic Significance and Explanation of their Discrepancies. International, Multicenter and Prospective Trial: The FiGARO Study [PDF]

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background The FiGARO (FFR versus iFR in Assessment of Hemodynamic Lesion Significance, and an Explanation of Their Discrepancies) trial is a prospective registry searching for predictors of fractional flow reserve/instantaneous wave‐free ratio (FFR/iFR)
Tomas Kovarnik, Matsuo Hitoshi, Ales Kral, Stepan Jerabek, David Zemanek, Yoshiaki Kawase, Hiroyuki Omori, Toru Tanigaki, Jan Pudil, Alexandra Vodzinska, Marian Branny, Roman Stipal, Petr Kala, Jan Mrozek, Martin Porzer, Tomas Grezl, Kamil Novobilsky, Oscar Mendiz, Karel Kopriva, Martin Mates, Martin Chval, Zhi Chen, Pavel Martasek, Ales Linhart   +23 more
doaj   +2 more sources

Adverse Plaque Characteristics Relate More Strongly With Hyperemic Fractional Flow Reserve and Instantaneous Wave-Free Ratio Than With Resting Instantaneous Wave-Free Ratio [PDF]

JACC: Cardiovascular Imaging, 2020
The current substudy of the PACIFIC (Prospective Comparison of Cardiac PET/CT, SPECT/CT Perfusion Imaging and CT Coronary Angiography With Invasive Coronary Angiography) trial explores the impact of computed tomography (CT)-derived unfavorable plaque features on both hyperemic and non-hyperemic flow indices.Next to lesion severity, plaque vulnerability
Driessen, R.S., Waard, G.A. de, Stuijfzand, W.J., Raijmakers, P.G., Danad, I., Bom, M.J., Min, J.K., Leipsic, J.A., Ahmadi, A., Ven, P.M. van de, Knuuti, J., Rossum, A.C. van, Davies, J.E., Royen, N. van, Narula, J., Knaapen, P.   +15 more
openaire   +8 more sources

Pathophysiological factors contributing to fractional flow reserve and instantaneous wave-free ratio discordance [PDF]

Reviews in Cardiovascular Medicine, 2022
The diagnostic accuracy and clinical benefits of instantaneous wave-free ratio (iFR) compared to fractional flow reserve (FFR) have been well-established in the literature. Despite the advantages of non-hyperemic pressure indices, approximately 20% of
Benjamin Fogelson, Hassan Tahir, James Livesay, Raj Baljepally   +3 more
doaj   +4 more sources

Dataset on blood flow and instantaneous wave-free ratio in normal and stenosed coronary arteries [PDF]

Data in Brief, 2020
Instantaneous wave-free ratio (iFR) has been proposed as a hemodynamic parameter that can reliably reflect the blood flow in stenosed coronary arteries. Currently, there are few investigations on the quantitative analysis of iFR in the patients regarding
Haipeng Liu, Shanxing Ou, Panli Liu, Yuhang Xu, Yinglan Gong, Ling Xia, Xinyi Leng, Thomas Wai Hong Leung, Lin Shi, Dingchang Zheng   +9 more
doaj   +2 more sources

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   +6 more sources

Comparative analysis of instantaneous wave-free ratio and quantitative real-time myocardial contrast echocardiography for the assessment of myocardial perfusion [PDF]

Frontiers in Cardiovascular Medicine, 2022
Background and hypothesisThe field of coronary artery physiology is developing rapidly and changing the practice of interventional cardiology. A new functional evaluation technique using the instantaneous wave-free ratio (iFR) has become an alternative ...
Li Liang, Yongxiang Zhu, Fangfang Li, Kai Guo, Shang Chang, Qian Li, Yaojun Zhang, Dongye Li   +7 more
doaj   +2 more sources

Instantaneous wave free ratio value impact on left internal mammary artery graft patency. [PDF]

Perfusion, 2023
Objectives To assess whether instantaneous wave – free ratio (iFR) value is associated with left internal mammary artery (LIMA) graft failure at 12 months follow-up post coronary artery bypass graft (CABG). Background Data suggests bypass to a non-significant left anterior descending artery (LAD) lesion due to visual over-estimation may lead to LIMA ...
Ordiene R, Unikas R, Aldujeli A, Benetis R, Jakuska P, Ceponiene I, Jankauskas A, Plisiene J, Lenkutis T, Rudokaite G, Braukyliene R, Stonis M, Davies J, Punjabi PP.   +13 more
europepmc   +3 more sources

Diagnostic performance of deep learning and computational fluid dynamics-based instantaneous wave-free ratio derived from computed tomography angiography [PDF]

BMC Cardiovascular Disorders, 2022
Background and objectives Both fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are widely used to evaluate ischemia-causing coronary lesions.
Jingyuan Zhang, Kun Xu, Yumeng Hu, Lin Yang, Xiaochang Leng, Hongfeng Jin, Yiming Tang, Xiaowei Liu, Chen Ye, Yitao Guo, Lei Wang, Jianjun Zhang, Yue Feng, Caiyun Mou, Lijiang Tang, Jianping Xiang, Changqing Du   +16 more
doaj   +2 more sources

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

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   +2 more sources

Safety of coronary revascularization deferral based on fractional flow reserve and instantaneous wave-free ratio in patients with chronic kidney disease [PDF]

Cardiology Journal, 2022
BACKGROUND: The safety of revascularization deferral according to pressure wire examination in patients with chronic kidney disease (CKD) has not been fully established.
Alejandro Travieso, Alex Fernando Castro-Mejia, Adrian Jeronimo-Baza, Maria Jose Perez-Vizcayno, Hernan Mejia-Renteria, Fernando Macaya, Gabriela Tirado-Conte, Luis Nombela, Pilar Jimenez-Quevedo, Pablo Salinas, Ivan J. Nunez-Gil, Antonio Fernandez-Ortiz, Javier Escaned, Nieves Gonzalo   +13 more
doaj   +2 more sources