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Study identifier: NCT04375306 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Resting Full-cycle Flow Ratio (RFR) Versus Angiography to Guide Revascularization Strategy in Patients Undergoing Coronary Artery By-pass Grafting (CABG)

Condition: Coronary Artery Disease  ·  Sponsor: Diagram B.V.

PhaseNA
Planned participants500
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Different trials have shown that fractional flow reserve (FFR) could successfully guide revascularization in patients undergoing percutaneous coronary intervention (PCI). It is conceivable that a similar revascularization guidance could be useful also for surgical revascularization i.e. coronary by-pass graft (CABG). Experience learns that grafts placed on vessels with hemodynamically non-significant stenosis often occlude due to competitive antegrade flow. Resting full-cycle Flow Ratio (RFR) is a measurement performed to evaluate the hemodynamic severity of coronary stenosis. Differently from FFR which is a measurement performed in maximal hyperemia, the RFR is a measurement that is performed in rest and therefore may predict better than FFR the baseline equilibriums that could lead to graft failure, while it has similar capacity to identify hemodynamically significant stenosis as FFR. It is unknown whether RFR guided CABG revascularization is superior as compared to angiography alone.

This description comes directly from the study's public registry record.

Talk to the study team

Prof. E. Kedhi, MD, PhD  ·  +31 384262999  ·  ekedhi@me.com

S. Postma, PhD  ·  +31 384262999  ·  rfrcabg.trial@diagram-zwolle.nl

Always discuss trial participation with your own doctor first.

Locations (4)

Imelda ziekenhuisBonheiden, BelgiumRecruiting
AZ Sint-Jan BruggeBruges, BelgiumActive Not Recruiting
Medical University of SilesiaKatowice, PolandRecruiting
SUSCCHBanská Bystrica, SlovakiaRecruiting

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Source record: clinicaltrials.gov/study/NCT04375306