Results 31 to 40 of about 7,681,842 (240)

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

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   +2 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 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
Matthias Götberg, Lars Jakobsen, Elmir Omerovic   +2 more
exaly   +5 more sources

Evaluation of Myocardial Ischemia with iFR (Instantaneous Wave-Free Ratio in the Catheterization Laboratory: A Pilot Study [PDF]

Arquivos Brasileiros de Cardiologia, 2020
Background: The Instantaneous Wave-Free Ratio (iFR) is an invasive functional evaluation method that does not require vasoactive drugs to induce maximum hyperemia Objective: To evaluate the contribution of the iFR to the therapeutic decision-making of ...
Heitor Cruz Alves Vieira, Maria Cristina Meira Ferreira, Leonardo Cruz Nunes, Carlos José Francisco Cardoso, Emilia Matos do Nascimento, Gláucia Maria Moraes de Oliveira   +5 more
doaj   +4 more sources

Instantaneous wave-free ratio and fractional flow reserve in clinical practice [PDF]

Netherlands Heart Journal, 2018
To compare fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) measurements in an all-comer patient population with moderate coronary artery stenoses.Visual assessment of the severity of coronary artery stenoses is often discordant in moderate lesions.
Pisters, R., Ilhan, M., Veenstra, L. F., Gho, B. C. G., Stein, M., Hoorntje, J. C. A., Rasoul, S.   +6 more
openaire   +3 more sources

A Vessel-Specific Analysis of Deferred Lesions Using the Instantaneous Wave-Free Ratio and Fractional Flow Reserve [PDF]

J Soc Cardiovasc Angiogr Interv
Background: Physiologically guided revascularization improves clinical outcomes. The cutoff values for deferral with fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are the same across all coronary arteries, despite differences in ...
Berntorp, Karolina, Myredal, Anna, Koul, Sasha, Mohammad, Moman A., Erlinge, David, Persson, Jonas, Yndigegn, Troels, Fröbert, Ole, Götberg, Matthias, Yndigegn, T, Fröbert, Ole,, Myredal, Anna,, Mohammad, Moman A.,, Fröbert, O, Erlinge, D, Mohammad, MA, Persson, J,, Koul, S, Berntorp, K, Erlinge, David,, Persson, Jonas,, Myredal, A, Götberg, M, Yndigegn, Troels,, Koul, Sasha,, Berntorp, Karolina,, Götberg, Matthias,, Lund University.   +27 more
core   +2 more sources

First-in-Man Percutaneous Coronary Intervention Using Instantaneous Wave-Free Ratio Roadmap Functionality With Instantaneous Wave-Free Ratio Scout Pullback

JACC: Cardiovascular Interventions, 2018
A 54-year-old male patient presented with a symptomatic bifurcation lesion of 75% stenosis in LAD ([Figure 1A][1]). Physiological evaluation was performed using instantaneous wave-free ratio (iFR) roadmap (Philips Healthcare, Best, the Netherlands) functionality [(1)][2].
Hideyuki Takimura, Takayuki Yabe, Toshiya Muramatsu   +2 more
exaly   +3 more sources

Simplifying the Assessment of Coronary Artery Stenosis by Enhancing Instantaneous Wave-Free Ratio [PDF]

Cureus
Background and objective The intermediate range of instantaneous wave-free ratio (iFR) measurements presents various diagnostic uncertainties. This study aimed to evaluate contrast-enhanced iFR (iFRc) to determine its correlation with fractional flow reserve (FFR).
Mahmoud, Mohamed Shaban Hashem, Mahmoud, Eman, Elkhashab, Khalied Ahmad Emam, Fouad, Bassem Zaref, William, Abram Ashraf, Saad, Moustafa Kamal Eldin Ibrahim Khalil   +5 more
openaire   +3 more sources

The Evolving Future of Instantaneous Wave-Free Ratio and Fractional Flow Reserve

Journal of the American College of Cardiology, 2017
In this review, the authors reflect upon the role of coronary physiology in the modern management of coronary artery disease. They critically appraise the scientific background of the instantaneous wave-free ratio (iFR) and fractional flow reserve (FFR), from early experimental studies to validation studies against indexes of ischemia, to clinical ...
Matthias, Götberg, Christopher M, Cook, Sayan, Sen, Sukhjinder, Nijjer, Javier, Escaned, Justin E, Davies   +5 more
openaire   +3 more sources

Comparison of Current and Novel ECG-Independent Algorithms for Resting Pressure Derived Physiologic Indices

IEEE Access, 2019
Recently, instantaneous wave-free ratio (iFR) or diastolic pressure-ratio (dPR) have been used in practice. For these indices, the reliability of electrocardiography (ECG)-independent algorithm for pressure-only data is essential.
Ki Hong Choi, Jinhyoung Park, Joo Myung Lee, Taewon Choi, Young Bin Song, Joo-Yong Hahn, Chang-Wook Nam, Eun-Seok Shin, Joon-Hyung Doh, Seung-Ho Hur, Bon-Kwon Koo   +10 more
doaj   +2 more sources