Results 51 to 60 of about 7,221,304 (242)

ECG-Independent Calculation of Instantaneous Wave-Free Ratio

JACC: Cardiovascular Interventions, 2015
The instantaneous wave-free ratio (iFR) is a recently developed invasive index of coronary disease severity that simplifies stenosis assessment by eliminating the need for vasodilator administration [(1–4)][1].
Petraco, Ricardo, Sen, Sayan, Nijjer, Sukhjinder, Malik, Iqbal S., Mikhail, Ghada W., Al-Lamee, Rasha, Cook, Christopher, Baker, Christopher, Kaprielian, Raffi, Foale, Rodney A., Mayet, Jamil, Francis, Darrel P., Davies, Justin E.   +12 more
openaire   +1 more source

Instantaneous wave-free ratio guided multivessel revascularisation during percutaneous coronary intervention for acute myocardial infarction: study protocol of the randomised controlled iMODERN trial

BMJ Open, 2021
Introduction Recent randomised clinical trials showed benefit of non-culprit lesion revascularisation in ST-elevation myocardial infarction (STEMI) patients. However, it remains unclear whether revascularisation should be performed at the index procedure
Jan J Piek, Javier Escaned, Niels van Royen, Rasha Al-Lamee, Justin Davies, Michael Maeng, Marcel G W Dijkgraaf, Robin Nijveldt, Troels Thim, Casper W H Beijnink, Dirk Jan van der Heijden, Igor Klem, Jacqueline L Vos, Yvonne Koop, Marcel A M Beijk, Raymond J Kim, Luis Raposo, Sérgio B Baptista   +17 more
doaj   +1 more source

Clinical outcomes of patients with deferred revascularisation based on fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) negative coronary artery lesions in Pakistani population

Journal of the Pakistan Medical Association
Objective: To assess long-term clinical outcomes and factors associated with target vessel revascularisation in patients with deferred revascularisation based on negative fractional flow reserve and negative instantaneous wave-free ratio.
Muhammad Nasir Rahman, Jamshed Ali, Sheema Saadia, Ghufran Adnan   +3 more
doaj   +1 more source

Myocardial perfusion imaging by single-photon emission tomography (MPI SPECT) versus Instantaneous wave-free ratio (IFR) for assessment of functional significance of intermediate coronary artery lesions

The Egyptian Heart Journal, 2019
Background The aim of our work was to compare the myocardial perfusion imaging by single-photon emission tomography (MPI-SPECT) as a non-invasive, relatively non-expensive test versus the instantaneous wave-free ratio (IFR) for the evaluation of ...
Osama Ahmed Amin, Yasser Ahmed Abdel Hady, Mohammad Ahmad Nour El-Din Esmail   +2 more
doaj   +1 more source

Does the Instantaneous Wave-Free Ratio Approximate the Fractional Flow Reserve?

Journal of the American College of Cardiology, 2013
This study sought to examine the clinical performance of and theoretical basis for the instantaneous wave-free ratio (iFR) approximation to the fractional flow reserve (FFR).Recent work has proposed iFR as a vasodilation-free alternative to FFR for making mechanical revascularization decisions.
Johnson, Nils P., Kirkeeide, Richard L., Asrress, Kaleab N., Fearon, William F., Lockie, Timothy, Marques, Koen M. J., Pyxaras, Stylianos A., Rolandi, M. Cristina, van 't Veer, Marcel, De Bruyne, Bernard, Piek, Jan J., Pijls, Nico H. J., Redwood, Simon, Siebes, Maria, Spaan, Jos A. E., Gould, K. Lance   +15 more
openaire   +6 more sources

Predictors of discordance between fractional flow reserve and instantaneous wave-free ratio in the real world

Journal of the Saudi Heart Association, 2018
Introduction: Invasive physiologic variables such as fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are used in clinical practice to assess the functional significance of epicardial coronary stenosis and guide the management ...
Dikra Al-Dobai, Mohammad Balghith, Kamal Ayoub, Amira Enezi, Azra Mahmud, Ali AL Ghamdi   +5 more
doaj   +1 more source

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   +2 more sources

Impact of assessment of fractional flow reserve and instantaneous wave-free ratio on clinical outcomes of percutaneous coronary intervention: a systematic review, meta-analysis and meta-regression analysis

Российский кардиологический журнал, 2023
Aim. To conduct a systematic review and meta-analysis to compare clinical outcomes in patients with coronary artery disease (CAD) undergoing percutaneous coronary intervention (PCI) using conventional coronary angiography (CAG) or fractional flow reserve
E. Z. Golukhova, K. V. Petrosian, A. V. Abrosimov, N. I. Bulaeva, E. S. Goncharova, B. Sh. Berdibekov   +5 more
doaj   +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

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source