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• W2900513680 abstract "Background Quantitative flow ratio (QFR) is a novel, adenosine-free method for functional coronary lesion interrogation, which is based on 3-dimensional quantitative coronary angiography and computational algorithms. Data on QFR in all-comer patients with intermediate coronary lesions are scarce, and the diagnostic performance in comparison to resting distal to aortic coronary pressure (Pd/Pa) ratio unknown. Methods A total of 436 patients with 516 vessels undergoing FFR measurements were included in the analysis. Diagnostic performance of QFR, distal to aortic coronary pressure (Pd/Pa) ratio, and anatomic indices versus FFR was assessed. Results FFR ≤0.80 was measured in 19.4% of interrogated vessels. QFR significantly correlated with FFR (r = 0.82, p < 0.001) with good agreement between QFR and FFR (mean difference 0.011, 95% CI 0.008–0.015). The AUC for an FFR ≤0.80 was 0.86 (95% CI 0.83–0.89, p < 0.001) for QFR, 0.76 (0.72–0.80, p < 0.001) for resting Pd/Pa ratio, and 0.63 (0.59–0.67, p < 0.001) for diameter stenosis. The diagnostic accuracy for identifying an FFR ≤0.80 was 93.4% for QFR, 84.3% for resting Pd/Pa ratio, and 80.4% for diameter stenosis. Conclusions QFR provides a novel diagnostic tool for functional coronary lesion assessment with superior diagnostic accuracy as compared with resting Pd/Pa ratio and anatomic indices. Future studies are needed to determine the non-inferiority of QFR analysis to FFR assessment with respect to clinical outcomes." @default.
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• W2900513680 date "2019-03-01" @default.
• W2900513680 modified "2023-10-01" @default.
• W2900513680 title "Comparison of resting distal to aortic coronary pressure with angiography-based quantitative flow ratio" @default.
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• W2900513680 doi "https://doi.org/10.1016/j.ijcard.2018.11.093" @default.
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