1. Service de Cardiologie, Clinique Sainte Clotilde, Sainte Clotilde, Réunion, France; 2. Departement de cardiologie, Centre hospitalier universitaire vaudois, Lausanne, Switzerland
Emerging technologies to measure fractional flow reserve (FFR) are increasing. Novel technologies suggest potential advantages to promote the use of new devices or software.
As interventional cardiologists we have to focus on the results of these new technologies and on their reproducibility among different studies. As mentioned by Demir et al in their letter, FFR measured with a microcatheter (FFRMC) compared with a pressure wire (FFRW) has been evaluated by our team1, and also by Menon et al2, Wijntjens et al3, Fearon et al4 and Ali et al5. These studies found a difference between FFRW and FFRMC of 0.83±0.07 ...
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