Results 61 to 70 of about 7,681,842 (240)

Invasive versus noninvasive assessment of functional significance of intermediate coronary artery lesions

Journal of Medicine in Scientific Research, 2021
Background Myocardial perfusion imaging (MPI) is noninvasive test used for evaluation of functional significance of borderline coronary artery lesions.
Ahmed Zayed
doaj   +1 more source

Waves and Windkessels reviewed

Artery Research, 2017
Pressure and flow are travelling waves and are reflected at many locations. The forward and reflected waves, obtained by wave separation, are compound waves.
Nicolaas Westerhof, Berend E. Westerhof
doaj   +1 more source

Wave Climate, Geotechnical and Geophysical Analysis of the Tillamook Jetties [PDF]

Wave Energy AS (WE) is an ocean energy company from Norway established to develop, test, market and commercialize the patented SSG™ wave energy converter technology.
Wave Energy AS, Bakke, Monica
core   +5 more sources

Novel Humanized Biosimulator to Predict Coronary Obstruction in High-Risk Valve-in-Valve Procedures

JACC: Case Reports, 2023
We developed humanized biosimulator to predict the risk of coronary obstruction among high-risk patients undergoing valve-in-valve (ViV) procedures. In this case, based on unchanged instantaneous wave-free ratio values measured during a ViV simulation ...
Nils Perrin, MD, Guillaume Bonnet, MD, Réda Ibrahim, MD, Raoul Bonan, MD, Lionel Leroux, MD, Juan F. Granada, MD, Jean Claude Tardif, MD, Thomas Modine, MD, PhD, MBA, Walid Ben Ali, MD, PhD   +8 more
doaj   +1 more source

Is the Instantaneous Wave-Free Ratio Equivalent to Fractional Flow Reserve?

Journal of the American College of Cardiology, 2013
We read the paper by Sen et al. [(1)][1] with great interest; the study was designed to explore whether the instantaneous wave-free ratio (iFR) was an adenosine-free alternative to fractional flow reserve (FFR) for the assessment of coronary stenosis.
Fan, Guo-Xin, Xu, Ya-Wei
openaire   +2 more sources

Contrast medium Pd/Pa ratio in comparison to fractional flow reserve, quantitative flow ratio and instantaneous wave-free ratio for evaluation of intermediate coronary lesions [PDF]

Advances in Interventional Cardiology, 2020
Paweł Kleczyński, Artur Dziewierz, Łukasz Rzeszutko, Dariusz Dudek, Jacek Legutko   +4 more
doaj   +2 more sources

Diagnostic accuracy of instantaneous wave free‐ratio in clinical practice

Journal of Interventional Cardiology, 2017
AimsTo evaluate the correlation between iFR and FFR in real‐world clinical practice.Methods and ResultsRetrospective, single‐centre study of 229 consecutive pressure‐wire studies (np = 158). Real‐time iFR and FFR measurements were performed for angiographically borderline stenoses.
Wern Yew Ding, Satheesh Nair, Clare Appleby   +2 more
openaire   +2 more sources

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

Archives of Cardiovascular Diseases Supplements, 2017
Instantaneous wave free ratio (iFR) does not require adenosine, but has a relatively wide intermediate range where functional assessment remains inconclusive. In this pilot study, we sought to enhance iFR through with the use of intracoronary (IC) saline (iFRs) and contrast media (iFRc) and determine whether these techniques correlated well with ...
Spagnoli, Vincent, Picard, Fabien, Tadros, Victor-Xavier, Cournoyer, Daniel, Doucet, Serge, Tanguay, Jean François, Gosselin, Gilbert, de Guise, Pierre, Gallo, Richard   +8 more
openaire   +4 more sources

Impact of Age on the Functional Evaluation of Intermediate Coronary Stenoses With Instantaneous Wave-Free Ratio and Fractional Flow Reserve

, 2021
The optimal strategy for assessing the ischemic significance of intermediate coronary stenoses with adenosine-induced fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) is still debated.
Marcolongo M., Verdoia M., Gioscia R., Negro F., De Luca G., Nardin M., Suryapranata H., Khedi E., Tonon F.   +8 more
core   +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