Trans-lesional fractional flow reserve gradient as derived from coronary CT improves patient management: ADVANCE registry. Journal Article

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Authors: Takagi, H; Leipsic, JA; McNamara, N; Martin, I; Fairbairn, TA; Akasaka, T; Nørgaard, BL; Berman, DS; Chinnaiyan, K; Hurwitz-Koweek, LM; Pontone, G; Kawasaki, T; Rønnow Sand, NP; Jensen, JM; Amano, T; Poon, M; Øvrehus, KA; Sonck, J; Rabbat, MG; Mullen, S; De Bruyne, B; Rogers, C; Matsuo, H; Bax, JJ; Douglas, PS; Patel, MR; Nieman, K; Ihdayhid, AR
Article Title: Trans-lesional fractional flow reserve gradient as derived from coronary CT improves patient management: ADVANCE registry.
Abstract: BACKGROUND: The role of change in fractional flow reserve derived from CT (FFR) across coronary stenoses (?FFR) in guiding downstream testing in patients with stable coronary artery disease (CAD) is unknown. OBJECTIVES: To investigate the incremental value of ?FFR in predicting early revascularization and improving efficiency of catheter laboratory utilization. MATERIALS: Patients with CAD on coronary CT angiography (CCTA) were enrolled in an international multicenter registry. Stenosis severity was assessed as per CAD-Reporting and Data System (CAD-RADS), and lesion-specific FFR was measured 2 ?cm distal to stenosis. ?FFR was manually measured as the difference of FFR across visible stenosis. RESULTS: Of 4730 patients (66 ?± ?10 years; 34% female), 42.7% underwent ICA and 24.7% underwent early revascularization. ?FFR remained an independent predictor for early revascularization (odds ratio per 0.05 increase [95% confidence interval], 1.31 [1.26-1.35]; p ? ?0.001) after adjusting for risk factors, stenosis features, and lesion-specific FFR. Among the 3 models (model 1: risk factors ?+ ?stenosis type and location ?+ ?CAD-RADS; model 2: model 1 ?+ ?FFR; model 3: model 2 ?+ ??FFR), model 3 improved discrimination compared to model 2 (area under the curve, 0.87 [0.86-0.88] vs 0.85 [0.84-0.86]; p ? ?0.001), with the greatest incremental value for FFR 0.71-0.80. ?FFR of 0.13 was the optimal cut-off as determined by the Youden index. In patients with CAD-RADS =3 and lesion-specific FFR =0.8, a diagnostic strategy incorporating ?FFR >0.13, would potentially reduce ICA by 32.2% (1638-1110, p ? ?0.001) and improve the revascularization to ICA ratio from 65.2% to 73.1%. CONCLUSIONS: ?FFR improves the discrimination of patients who underwent early revascularization compared to a standard diagnostic strategy of CCTA with FFR, particularly for those with FFR 0.71-0.80. ?FFR has the potential to aid decision-making for ICA referral and improve efficiency of catheter laboratory utilization.
Journal Title: Journal of cardiovascular computed tomography
ISSN: 1876-861X; 1876-861X
Publisher: Unknown  
Date Published: 2021