Objectives: The aim of this study was to investigate the clinical outcomes of patients deferred
from coronary revascularization on the basis of instantaneous wave-free ratio (iFR) or …

Background Instantaneous wave-free ratio (iFR) is a coronary physiology index used to
assess the severity of coronary artery stenosis to guide revascularization. iFR has previously …

Objectives”, explains how to select and use various test methods for evaluating disease
states, the prognosis, and the effects of treatment. References to the literature published …

Background: The functional SYNTAX score (FSS) has been shown to improve the
discrimination for major adverse cardiac events compared with the anatomic SYNTAX score …

Aims Conventional fractional flow reserve (FFR) is measured invasively using a coronary
guidewire equipped with a pressure sensor. A non-invasive derived FFR would eliminate …

Objectives We aimed to provide robust performance estimates for quantitative flow ratio
(QFR) in assessment of intermediary coronary lesions. Background Angiography‐based …

SciELO - Brasil - Diretrizes da Sociedade Brasileira de Cardiologia sobre Angina Instável e
Infarto Agudo do Miocárdio sem Supradesnível do Segmento ST – 2021 Diretrizes da …

Ischemic heart disease is a dynamic process of atherosclerosis of the coronary arteries or
functional alterations of coronary circulation that can be modified by lifestyle …

Objectives: The aim of this study was to investigate the impact of post–percutaneous
coronary intervention (PCI) quantitative flow ratio (QFR) on clinical outcomes in patients with …

Fractional flow reserve (FFR) and instantaneous wave-free ratio are the present standard
diagnostic methods for invasive assessment of the functional significance of epicardial …