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Agreement between follow-up iFR and FFR of nonculprit lesions < 5 days after STEMI
| iFR ≥ 0.90 | iFR < 0.90 | Total | |
|---|---|---|---|
| FFR > 0.80 | 11 | 5 | 16 |
| FFR ≤ 0.80 | 3 | 16 | 19 |
| Total | 14 | 21 | 35 |
iFR, instantaneous wave free ratio. FFR, fractional flow reserve. STEMI, ST-segment elevation myocardial infarction. Follow-up interval: 2 (1–3) days
