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• W2805142705 abstract "Abstract Introduction and Objective Assessment of coronary lesions by the instantaneous wave free ratio (iFR) has generated significant debate. We aimed to assess the diagnostic performance of iFR and its impact on the decision to use fractional flow reserve (FFR) and on procedural characteristics. Methods In this single-center registry of patients undergoing functional assessment of coronary lesions, FFR was used as a reference for assessing the diagnostic performance of iFR. An iFR value 0.93 was considered negative. Results Functional testing was undertaken of 402 lesions, of which 154 were assessed with both techniques, 222 with FFR only, and 26 with iFR only. Using a cut-off of ≤0.80 for iFR, the area under the curve was 0.73 (95% CI 0.65-0.81), with an optimal value of ≤0.91. FFR was undertaken in 93 out of 94 lesions with an inconclusive iFR and was performed in 69.1% of the remaining iFR-tested lesions. Concordance between iFR and FFR was 87% (chi-square=22.43; p Conclusion iFR had a reasonable diagnostic performance. Operators often chose to perform FFR despite conclusive iFR results. iFR and FFR were highly concordant, but a non-negligible proportion of lesions classified as ischemic by iFR were classified as non-ischemic by FFR. iFR had no impact on procedural characteristics." @default.
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• W2805142705 date "2018-06-01" @default.
• W2805142705 modified "2023-09-27" @default.
• W2805142705 title "Comparative analysis of fractional flow reserve and instantaneous wave-free ratio: Results of a five-year registry" @default.
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• W2805142705 doi "https://doi.org/10.1016/j.repce.2018.05.003" @default.
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