Safety of the Deferral of Coronary Revascularization on the Basis of Instantaneous Wave-Free Ratio and Fractional Flow Reserve Measurements in Stable Coronary Artery Disease and Acute Coronary Syndromes.
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Cook, Christopher M
Baptista, Sérgio B
Silva, Pedro Canas
Christiansen, Evald H
Di Mario, Carlo
Gerber, Robert T
Kharbanda, Rajesh K
Lehman, Sam J
Malik, Iqbal S
Nijjer, Sukhjinder S
Piek, Jan J
Seto, Arnold H
Sharp, Andrew S P
Van Belle, Eric
van Royen, Niels
Vrints, Christiaan J
Patel, Manesh R
Davies, Justin E
MetadataShow full item record
CitationJACC. Cardiovascular interventions 2018;11(15):1437-1449
AbstractThe aim of this study was to investigate the clinical outcomes of patients deferred from coronary revascularization on the basis of instantaneous wave-free ratio (iFR) or fractional flow reserve (FFR) measurements in stable angina pectoris (SAP) and acute coronary syndromes (ACS). Assessment of coronary stenosis severity with pressure guidewires is recommended to determine the need for myocardial revascularization. The safety of deferral of coronary revascularization in the pooled per-protocol population (n = 4,486) of the DEFINE-FLAIR (Functional Lesion Assessment of Intermediate Stenosis to Guide Revascularisation) and iFR-SWEDEHEART (Instantaneous Wave-Free Ratio Versus Fractional Flow Reserve in Patients With Stable Angina Pectoris or Acute Coronary Syndrome) randomized clinical trials was investigated. Patients were stratified according to revascularization decision making on the basis of iFR or FFR and to clinical presentation (SAP or ACS). The primary endpoint was major adverse cardiac events (MACE), defined as the composite of all-cause death, nonfatal myocardial infarction, or unplanned revascularization at 1 year. Coronary revascularization was deferred in 2,130 patients. Deferral was performed in 1,117 patients (50%) in the iFR group and 1,013 patients (45%) in the FFR group (p < 0.01). At 1 year, the MACE rate in the deferred population was similar between the iFR and FFR groups (4.12% vs. 4.05%; fully adjusted hazard ratio: 1.13; 95% confidence interval: 0.72 to 1.79; p = 0.60). A clinical presentation with ACS was associated with a higher MACE rate compared with SAP in deferred patients (5.91% vs. 3.64% in ACS and SAP, respectively; fully adjusted hazard ratio: 0.61 in favor of SAP; 95% confidence interval: 0.38 to 0.99; p = 0.04).
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- Issue date: 2019 Feb 5
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- Authors: Lee JM, Shin ES, Nam CW, Doh JH, Hwang D, Park J, Kim KJ, Zhang J, Ahn C, Koo BK
- Issue date: 2017 Dec 26
- Instantaneous Wave-Free Ratio (IFR)
- Authors: Soos MP, Gonzalez-Morales D, McComb D
- Issue date: 2019 Jan
- Instantaneous Wave-free Ratio versus Fractional Flow Reserve to Guide PCI.
- Authors: Götberg M, Christiansen EH, Gudmundsdottir IJ, Sandhall L, Danielewicz M, Jakobsen L, Olsson SE, Öhagen P, Olsson H, Omerovic E, Calais F, Lindroos P, Maeng M, Tödt T, Venetsanos D, James SK, Kåregren A, Nilsson M, Carlsson J, Hauer D, Jensen J, Karlsson AC, Panayi G, Erlinge D, Fröbert O, iFR-SWEDEHEART Investigators.
- Issue date: 2017 May 11