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- Title
Agreement between nonculprit stenosis follow-up iFR and FFR after STEMI (iSTEMI substudy).
- Authors
Thim, Troels; Götberg, Matthias; Fröbert, Ole; Nijveldt, Robin; van Royen, Niels; Baptista, Sergio Bravo; Koul, Sasha; Kellerth, Thomas; Bøtker, Hans Erik; Terkelsen, Christian Juhl; Christiansen, Evald Høj; Jakobsen, Lars; Kristensen, Steen Dalby; Maeng, Michael
- Abstract
Objective: To evaluate agreement between instantaneous wave free ratio (iFR) and fractional flow reserve (FFR) for the functional assessment of nonculprit coronary stenoses at staged follow-up after ST-segment elevation myocardial infarction (STEMI). Results: We measured iFR and FFR at staged follow-up in 112 STEMI patients with 146 nonculprit stenoses. Median interval between STEMI and follow-up was 16 (interquartile range 5–32) days. Agreement between iFR and FFR was 77% < 5 days after STEMI and 86% after ≥ 5 days (p = 0.19). Among cases with disagreement, the proportion of cases with hemodynamically significant iFR and non-significant FFR were different when assessed < 5 days (5 in 8, 63%) versus ≥ 5 days (3 in 15, 20%) after STEMI (p = 0.04). Overall classification agreement between iFR and FFR was comparable to that observed in stable patients. Time interval between STEMI and follow-up evaluation may impact agreement between iFR and FFR.
- Subjects
MYOCARDIAL infarction; STENOSIS; CORONARY vasospasm
- Publication
BMC Research Notes, 2020, Vol 13, Issue 1, pN.PAG
- ISSN
1756-0500
- Publication type
Article
- DOI
10.1186/s13104-020-05252-6