Results 11 to 20 of about 7,524,413 (132)

Hemodynamic assessment of intracranial atherosclerotic stenosis: comparison between invasive non-hyperemic pressure ratio and angiography-derived quantitative flow ratio [PDF]

Frontiers in Neurology
ObjectivesTo evaluate the diagnostic accuracy of the quantitative flow ratio (QFR) for hemodynamic exploration of intracranial atherosclerotic stenosis, using the invasive cerebrovascular pressure ratio (CVPR) and resting full-cycle ratio (RFR) as ...
Xiaohui Wang, Yang Bian, Rongju Zhang, Haojing Zhu, Junjie Yang, Ruiling Wang, Xinfeng Liu, Bin Lv, Xiangyu Cao, Wei Dai, Zhibin Sun, Jing Jing, Zhihua Du, Shengyuan Yu, Jun Wang   +14 more
doaj   +4 more sources

Clinical assessment of resting full-cycle ratio and fractional flow reserve for coronary artery disease in a real-world cohort [PDF]

Frontiers in Cardiovascular Medicine, 2022
BackgroundThere are few reports published on the comparison of the resting full-cycle ratio (RFR) and fractional flow reserve (FFR) on the assessment of the severity of coronary stenosis.
Ming-Ju Chuang, Ming-Ju Chuang, Chun-Chin Chang, Chun-Chin Chang, Chun-Chin Chang, Chun-Chin Chang, Yin-Hao Lee, Yin-Hao Lee, Ya-Wen Lu, Ya-Wen Lu, Yi-Lin Tsai, Yi-Lin Tsai, Ruey-Hsing Chou, Ruey-Hsing Chou, Ruey-Hsing Chou, Ruey-Hsing Chou, Cheng-Hsueh Wu, Cheng-Hsueh Wu, Tse-Min Lu, Tse-Min Lu, Po-Hsun Huang, Po-Hsun Huang, Po-Hsun Huang, Po-Hsun Huang   +23 more
doaj   +3 more sources

Potential value of saline-induced Pd/Pa ratio in patients with coronary artery stenosis [PDF]

Frontiers in Cardiovascular Medicine, 2023
BackgroundFractional flow reserve (FFR) is the current gold standard for identifying myocardial ischemia in individuals with coronary artery stenosis.
Hiroyuki Kiriyama, Arihiro Kiyosue, Arihiro Kiyosue, Shun Minatsuki, Takuya Kawahara, Susumu Katsushika, Tatsuya Kamon, Kazutoshi Hirose, Hiroki Shinohara, Mizuki Miura, Akihito Saito, Hironobu Kikuchi, Satoshi Kodera, Masaru Hatano, Jiro Ando, Masahiro Myojo, Nobuhiko Itoh, Keisuke Yamamoto, Hiroshi Ikenouchi, Norifumi Takeda, Issei Komuro   +20 more
doaj   +2 more sources

Invasive physiologic assessment of coronary artery stenosis by resting full-cycle ratio and fractional flow reserve: a prospective observational study

Scientific Reports, 2023
Resting full-cycle ratio (RFR), an alternative to fractional flow reserve (FFR) for evaluating intermediate coronary artery stenosis, helps reduce patients’ time, cost, and discomfort. However, the validation data for RFR and FFR are lacking. We aimed to
Oh-Hyun Lee, Ji Woong Roh, Yongcheol Kim, Seok-Jae Heo, Eui Im, Deok-Kyu Cho   +5 more
doaj   +2 more sources

Utility of Saline-Induced Resting Full-Cycle Ratio Compared with Resting Full-Cycle Ratio and Fractional Flow Reserve

Journal of Interventional Cardiology, 2020
Background. The saline-induced distal coronary pressure/aortic pressure ratio predicted fractional flow reserve (FFR). The resting full-cycle ratio (RFR) represents the maximal relative pressure difference in a cardiac cycle. Therefore, the present study
Takao Sato, Sonoka Goto, Yusuke Ohta, Yuji Taya, Sho Yuasa, Minoru Takahashi, Masaaki Okabe, Yoshifusa Aizawa   +7 more
doaj   +2 more sources

Resting Full-Cycle Ratio versus Fractional Flow Reserve: A SWEDEHEART-Registry-Based Comparison of Two Physiological Indexes for Assessing Coronary Stenosis Severity

Journal of Interventional Cardiology, 2023
The adenosine-requiring physiological index fractional flow reserve (FFR) is the gold-standard method for determining the significance of intermediate lesions, while the resting full-cycle ratio (RFR) is a novel nonhyperaemic index without the need for ...
Stephen Malmberg, Jörg Lauermann, Patric Karlström, Dario Gulin, Neshro Barmano   +4 more
doaj   +2 more sources

Feasibility and Comparison of Resting Full-Cycle Ratio and Computed Tomography Fractional Flow Reserve in Patients with Severe Aortic Valve Stenosis

Journal of Cardiovascular Development and Disease, 2022
Background: Computed tomography derived Fractional Flow Reserve (CT-FFR) has been shown to decrease the referral rate for invasive coronary angiography (ICA).
Hendrik Wienemann, Marcel C. Langenbach, Victor Mauri, Maryam Banazadeh, Konstantin Klein, Christopher Hohmann, Samuel Lee, Isabel Breidert, Alexander Hof, Kaveh Eghbalzadeh, Elmar Kuhn, Marcel Halbach, David Maintz, Stephan Baldus, Alexander Bunck, Matti Adam   +15 more
doaj   +2 more sources

Comparison of Nitroglycerin-Induced Pressure Ratio Drop and Resting Full-Cycle Ratio in a Pressure Wire Study. [PDF]

J Clin Med
Background/Objectives: The acute drop in distal coronary pressure (Pd)-to-aortic pressure (Pa) ratio after intracoronary nitroglycerin (NTG-Pd/Pa) administration is an acceptable estimate of fractional flow reserve (FFR).
Jong CB, Lu TS, Liao MT, Xu JL, Chen CK, Kuo JC, Wu CC.   +6 more
europepmc   +3 more sources

Interpretation of Discordance Between Non-Hyperemic Pressure Ratios and Fractional Flow Reserve: Potential Mechanisms and Clinical Implications [PDF]

Reviews in Cardiovascular Medicine
Invasive coronary angiography remains the gold standard for assessing and treating coronary artery disease (CAD). While the decision to intervene on a severely stenotic lesion in acute coronary syndrome (ACS) can be straightforward, assessing the ...
Akshay Roy-Chaudhury, Sameer Prasada, George A. Stouffer   +2 more
doaj   +2 more sources

Impact of Kidney Function on Physiological Assessment of Coronary Circulation [PDF]

Reviews in Cardiovascular Medicine
Background: Diagnosing myocardial ischemia in chronic kidney disease (CKD) patients is crucial since coronary artery disease (CAD) forms the predominant cause of mortality in these patients.
Wojciech Zasada, Barbara Zdzierak, Tomasz Rakowski, Beata Bobrowska, Agata Krawczyk-Ożóg, Sławomir Surowiec, Stanisław Bartuś, Andrzej Surdacki, Artur Dziewierz   +8 more
doaj   +2 more sources