Results 31 to 40 of about 7,220,590 (185)

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

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   +1 more source

Differential predictability for high-risk plaque characteristics between fractional flow reserve and instantaneous wave-free ratio

Scientific Reports, 2023
To evaluate the differential associations of high-risk plaque characteristics (HRPC) with resting or hyperemic physiologic indexes (instantaneous wave-free ratio [iFR] or fractional flow reserve [FFR]), a total of 214 vessels from 127 patients with ...
Joo Myung Lee, Doosup Shin, Seung Hun Lee, Ki Hong Choi, Sung Mok Kim, Eun Ju Chun, Kwan Yong Lee, Doyeon Hwang, Sung Gyun Ahn, Adam J. Brown, Hernán Mejía-Rentería, Adrien Lefieux, David Molony, Kiyuk Chang, Tsunekazu Kakuta, Javier Escaned, Habib Samady   +16 more
doaj   +1 more source

Comparison of resting and adenosine-free pressure indices with adenosine-induced hyperemic fractional flow reserve in intermediate coronary lesions

Indian Heart Journal, 2019
Objective: Fractional flow reserve (FFR) using adenosine has been the gold standard in the functional assessment of intermediate coronary stenoses in the catheterization laboratory.
Deep Chandh Raja, Vijayakumar Subban, Rony Mathew, Jabir Abdullakutty, Jo Joseph, Jimmy George, Subash Chandra, Nandhini Livingston, Shyam G. Nair, Ezhilan Janakiraman, Latchumanadhas Kalidoss, Ajit Sankaradas Mullasari   +11 more
doaj   +1 more source

Instantaneous Wave-Free Ratio for Evaluation of Circumflex Artery Compression During Indirect Mitral Annuloplasty. [PDF]

JACC Case Rep
Indirect mitral annuloplasty with the Carillon Mitral Contour System offers a promising treatment for functional mitral regurgitation, but it may be complicated by circumflex artery (Cx) compression.
Rottländer D, Golabkesh M, Degen H, Barlagiannis D, Ögütcü A, Saal M, Haude M.   +6 more
europepmc   +2 more sources

iFR variations during coronary angioplasty

REC: Interventional Cardiology (English Ed.), 2020
A fifty-five year-old hypertensive and former smoker male admitted with signs of typical chest pain, left bundle brunch block, and normal troponin levels. The angiography revealed 2-vessel, left circumflex and right coronary artery disease.
Iván J. Núñez-Gil, Óscar Vedia, Hernán Mejía-Rentería, Rafael Vera-Urquiza, Alex F. Castro-Mejía, Antonio Fernández-Ortiz   +5 more
doaj   +1 more source

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

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   +1 more source

Contemporary Use of Coronary Physiology in Cardiology

Cardiology and Therapy, 2023
Coronary angiography has a limited ability to predict the functional significance of intermediate coronary lesions. Hence, physiological assessment of coronary lesions, via fractional flow reserve (FFR) or instantaneous wave-free ratio (iFR), has been ...
Ayman Elbadawi, Ramy Sedhom, Mohamed Ghoweba, Abdelazeem Mohamed Etewa, Waleed Kayani, Faisal Rahman   +5 more
doaj   +1 more source

INSTANTANEOUS WAVE–FREE RATIO (IFR) CAN DETECT IMPROVEMENT IN CORONARY HAEMODYNAMICS AFTER PCI

Journal of the American College of Cardiology, 2013
The instantaneous wave–Free Ratio (iFR), a pressure–only adenosine–free index of coronary stenosis severity, has been evaluated as a diagnostic tool in the ADVISE trial and registry.
Nijjer, Sukhjinder, Sen, Sayan, Cunha, Ricardo Petraco da, Cuculi, Florim, Broyd, Christopher, Foin, Nicolas, Foale, Rodney, Malik, Iqbal, Mikhail, Ghada, Sethi, Amarjit, Kaprielian, Raffi, Baker, Christopher, Hughes, Alun, Francis, Darrel, Mayet, Jamil, Kharbanda, Rajesh, Kharbanda, Rajesh, Mario, Carlo Di, Davies, Justin   +18 more
openaire   +1 more source

Determinants and prognostic implications of instantaneous wave-free ratio in patients with mild to intermediate coronary stenosis: Comparison with those of fractional flow reserve.

PLoS ONE, 2020
The instantaneous wave-free ratio (iFR) is used for assessing the hemodynamic severity of a lesion, as an alternative to the fractional flow reserve (FFR).
Kyohei Onishi, Heitaro Watanabe, Kazuyoshi Kakehi, Tomoyuki Ikeda, Toru Takase, Kenji Yamaji, Masafumi Ueno, Kazuhiro Kobuke, Gaku Nakazawa, Shunichi Miyazaki, Yoshitaka Iwanaga   +10 more
doaj   +1 more source

Diagnostic accuracy of Instantaneous Wave-Free Ratio (iFR) for the assessment of myocardial ischaemia: a comparison with non-invasive stress imaging

European Heart Journal, 2020
Abstract Background Instantaneous Wave-Free Ratio (iFR) allows for the assessment of the haemodynamic effects of epicardial coronary stenoses without the need for hyperaemia; iFR is currently recommended as a means to evaluate myocardial ischaemia ...
L Stazzoni, L Tessandori, P Spontoni, M Angelillis, C Giannini, A Christou, A Pieroni, M De Carlo, A.S Petronio   +8 more
openaire   +1 more source