Background The underlying cause of FFR reduction and prognostic impact of FFR after
optimal DES implantation remain unknown. The study aims were to use intravascular …

Post‐percutaneous coronary intervention (PCI) fractional flow reserve (FFR)≥ 0.90 confers
an improved cardiac prognosis. There are currently limited data available to determine how …

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 …

Objectives We evaluated the usefulness of a fractional flow reserve (FFR) gradient across
the stent (ΔFFRstent) for long‐term clinical outcomes after percutaneous coronary …

Objective To determine whether the instantaneous wave-free ratio (iFR) can detect
improvement in stenosis significance after percutaneous coronary intervention (PCI) and …

Background Prognostic value of poststenting fractional flow reserve (FFR) remains uncertain
in patients undergoing an imaging-guided optimal stenting strategy. Objectives The authors …

Background Segmental postpercutaneous coronary intervention (PCI) pressure gradients
may detect residual disease and potential targets for optimization. However, universal …

Objectives and Background Increased microvascular resistance may impair hyperemic
coronary flow by limiting the maximal and constant vasodilation, resulting in increased …

Background To date, no randomized study has investigated the value of optical coherence
tomography (OCT) in optimizing the results of coronary angioplasty for non–ST-segment …

Objectives: We sought to identify baseline clinical, angiographic, and hemodynamic
variables associated with optimal bare-metal stent (BMS) deployment, allowing selection of …