TY - JOUR
T1 - VERMONT
T2 - vessel fractional flow reserve (vFFR) assessment of stenosis severity: a prospective study
AU - Akrawi, Daniel
AU - Kadappu, Krishna
AU - Xu, James
AU - Badie, Tamer Yousef Naguib
AU - Gibbs, Oliver
AU - Kachwalla, Hashim
AU - Nguyen, Phong T.D.
AU - Kurup, Rahul
AU - Premawardhana, Upul
AU - Lo, Sidney
AU - Huang, Justyn
AU - Tran, Hao
AU - Soosapilla, Kavie
AU - O'Loughlin, Aiden
AU - Hennessy, Annemarie
AU - Femia, Giuseppe
PY - 2025/12/1
Y1 - 2025/12/1
N2 - Background: Vessel fractional flow reserve (vFFR) is an angiogram-based technique validated in early studies; however, data on its real-time diagnostic performance and integration into routine workflow remain limited. Aims: The VERMONT study evaluated the diagnostic accuracy and time efficiency of real-time vFFR versus conventional wire-based FFR in detecting functionally significant coronary lesions. Methods: We conducted a prospective, single-center, blinded study in which vFFR was measured during coronary angiography and compared with simultaneous wire-based FFR. A wire-based FFR of ≤ 0.80 defined a physiologically significant lesion. Results: In 209 patients with 225 intermediate lesions, only 20 (8.9%) of lesions were excluded from vFFR analysis. vFFR demonstrated an AUC of 0.92 (95% CI, 0.89−0.96) for detecting lesions with FFR ≤ 0.80, achieving 90% sensitivity, 79% specificity, a negative predictive value of 93%, and a positive predictive value of 74%. Interobserver agreement was excellent (r = 0.97, p < 0.001). Real-time vFFR computation was on average 13.9 min faster than wire-based FFR (p < 0.001). Conclusion: Real-time vFFR demonstrated excellent diagnostic performance with high sensitivity and NPV for identifying functionally significant intermediate lesions, supporting its use as a reliable screening tool. Importantly, this was achieved with a low exclusion rate, rapid computation time, and minimal interobserver variability, underscoring its practicality in routine clinical practice.
AB - Background: Vessel fractional flow reserve (vFFR) is an angiogram-based technique validated in early studies; however, data on its real-time diagnostic performance and integration into routine workflow remain limited. Aims: The VERMONT study evaluated the diagnostic accuracy and time efficiency of real-time vFFR versus conventional wire-based FFR in detecting functionally significant coronary lesions. Methods: We conducted a prospective, single-center, blinded study in which vFFR was measured during coronary angiography and compared with simultaneous wire-based FFR. A wire-based FFR of ≤ 0.80 defined a physiologically significant lesion. Results: In 209 patients with 225 intermediate lesions, only 20 (8.9%) of lesions were excluded from vFFR analysis. vFFR demonstrated an AUC of 0.92 (95% CI, 0.89−0.96) for detecting lesions with FFR ≤ 0.80, achieving 90% sensitivity, 79% specificity, a negative predictive value of 93%, and a positive predictive value of 74%. Interobserver agreement was excellent (r = 0.97, p < 0.001). Real-time vFFR computation was on average 13.9 min faster than wire-based FFR (p < 0.001). Conclusion: Real-time vFFR demonstrated excellent diagnostic performance with high sensitivity and NPV for identifying functionally significant intermediate lesions, supporting its use as a reliable screening tool. Importantly, this was achieved with a low exclusion rate, rapid computation time, and minimal interobserver variability, underscoring its practicality in routine clinical practice.
KW - angiogram-based fractional flow reserve
KW - diagnostic accuracy
KW - FFR
KW - fractional flow reserve
KW - vessel fractional flow reserve
KW - vFFR
UR - http://www.scopus.com/inward/record.url?scp=105018763171&partnerID=8YFLogxK
U2 - 10.1002/ccd.70250
DO - 10.1002/ccd.70250
M3 - Article
C2 - 41085113
AN - SCOPUS:105018763171
SN - 1522-1946
VL - 106
SP - 3757
EP - 3765
JO - Catheterization and Cardiovascular Interventions
JF - Catheterization and Cardiovascular Interventions
IS - 7
ER -