Fractional flow reserve (FFR) is emerging as a useful clinical tool for assessing the
functional significance of coronary atherosclerosis. As opposed to anatomical approaches …

2 Fearon Coronary Physiologic Indexes the microvasculature (distal coronary pressure
minus venous pressure) divided by the resistance. Because venous pressure is generally …

Fractional flow reserve (FFR) is a physiological index of the severity of a stenosis in an
epicardial coronary artery, based on the pressure differential across the stenosis. Clinicians …

Background: We evaluate the prognostic value of measuring fractional flow reserve (FFR)
after percutaneous coronary intervention (post-PCI FFR) and intravascular imaging in …

Evaluation of new coronary devices and demonstration of their conformity to essential
principles of safety and effectiveness requires clinical trials in human subjects. Today, many …

Major medical society guidelines recommend the measurement of fractional flow reserve
(FFR) as an aid in choosing percutaneous coronary intervention in patients with stable …

Background: Measuring fractional flow reserve (FFR) with a pressure wire remains
underutilized because of the invasiveness of guide wire placement or the need for a …

FFR has a number of unique aspects that distinguish it from other indexes of coronary
physiology such as coronary flow velocity reserve (Table). FFR has an upper normal value …

Background Fractional flow reserve (FFR) prior to percutaneous coronary intervention (PCI)
is useful to guide treatment. Whether post-PCI FFR assessment might have clinical impact is …

Much clinical evidence indicates that use of this dedicated invasive functional method may
help in selecting appropriate patients and lesions for treatment, avoiding unnecessary …