Long‐Term Clinical Outcomes of Nonhyperemic Pressure Ratios: Resting Full‐Cycle Ratio, Diastolic Pressure Ratio, and Instantaneous Wave‐Free Ratio [PDF]
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2020 Background Nonhyperemic pressure ratios (NHPRs) such as instantaneous wave‐free ratio, resting full‐cycle ratio, or diastolic pressure ratio have emerged as invasive physiologic indices precluding the need for hyperemic agents.
Joo Myung Lee +17 more
doaj +2 more sources
Decoding fractional flow reserve/instantaneous wave-free ratio discordance: is flow the answer? [PDF]
Neth Heart J, 2023 van Nunen LX, Damman P.
europepmc +3 more sources
Diastolic pressure ratio: new approach and validation vs. the instantaneous wave-free ratio. [PDF]
Eur Heart J, 2019 Abstract Aims The instantaneous wave-free ratio (iFR) and whole-cycle Pd/Pa investigate coronary physiology during non-hyperaemic conditions. To test for unique physiologic properties of the wave-free period when making resting coronary pressure measurements, we compared post hoc a diastolic pressure ...
Johnson NP +7 more
europepmc +4 more sources
Instantaneous wave free ratio value impact on left internal mammary artery graft patency. [PDF]
Perfusion, 2023 Objectives To assess whether instantaneous wave – free ratio (iFR) value is associated with left internal mammary artery (LIMA) graft failure at 12 months follow-up post coronary artery bypass graft (CABG). Background Data suggests bypass to a non-significant left anterior descending artery (LAD) lesion due to visual over-estimation may lead to LIMA ...
Ordiene R +13 more
europepmc +3 more sources
Diagnostic performance of deep learning and computational fluid dynamics-based instantaneous wave-free ratio derived from computed tomography angiography [PDF]
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 +16 more
doaj +2 more sources
Safety of coronary revascularization deferral based on fractional flow reserve and instantaneous wave-free ratio in patients with chronic kidney disease [PDF]
Cardiology Journal, 2022 BACKGROUND: The safety of revascularization deferral according to pressure wire examination in patients with chronic kidney disease (CKD) has not been fully established.
Alejandro Travieso +13 more
doaj +2 more sources
Revascularization and Mortality at 5 Years After Treatment Guided By Instantaneous Wave‐Free Ratio and Fractional Flow Reserve: A Systematic Review and Meta‐Analysis of Randomized Controlled Trials [PDF]
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023 Jayakumar Sreenivasan +2 more
doaj +2 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 +5 more
doaj +4 more sources
Long-term Safety of Revascularization Deferral Based on Instantaneous Wave-Free Ratio or Fractional Flow Reserve. [PDF]
J Soc Cardiovasc Angiogr Interv, 2023 Yndigegn T +12 more
europepmc +3 more sources
Instantaneous wave-free ratio and fractional flow reserve in clinical practice. [PDF]
Neth Heart J, 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 +6 more
europepmc +4 more sources