Abstract
Instantaneous wave-free ratio (iFR) is a non-hyperemic coronary physiological index measured during the diastolic wave-free period. Although atrial fibrillation (AF) with beat-to-beat fluctuations can occur during dias-tole, the feasibility of iFR measurements during AF has previously been demonstrated. However, the effects of coronary circulation during AF on iFR measurements remain unknown. In addition, the pathophysiology of ischemia due to AF tachycardia requires further elucidation. We report a unique case of myocardial ischemia due to rapid AF, as indicated by the iFR pullback measurement and beat-to-beat analysis. When planning revas-cularization in patients with rapid AF, the ability of iFR to reflect ischemic stress due to AF tachycardia should be considered.
| Original language | English |
|---|---|
| Pages (from-to) | 147-152 |
| Number of pages | 6 |
| Journal | International Heart Journal |
| Volume | 63 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2022 |
Keywords
- Arrhythmia
- Coronary hemodynamics
- Coronary physiology
- Percutaneous coronary intervention