Reconciling poststenotic pressure with hyperemic flow: comparing coronary flow reserve, instantaneous wave-free ratio, and fractional flow reserve.
نویسنده
چکیده
منابع مشابه
Noncardiac surgery after coronary revascularization: more contemporary evidence needed.
Noncardiac Surgery After Coronary Revascularization: More Contemporary Evidence Needed Prashant Vaishnava, MD; Kim A. Eagle, MD · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 429 Reconciling Poststenotic Pressure With Hyperemic Flow: Comparing Coronary Flow Reserve, Instantaneous Wave-Free Ratio, and Fractional Flow Reserve Morton J. ...
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Aim of this study is the assessment of feasibility and clinical usefulness of a new index of stenosis severity, the slope of the instantaneous transstenotic pressure gradient/velocity relationship. Twenty-one patients scheduled for percutaneous revascularization procedures were studied with simultaneous measurement of poststenotic coronary pressure and flow velocity, in basal condition and duri...
متن کاملBaseline instantaneous wave-free ratio as a pressure-only estimation of underlying coronary flow reserve: results of the JUSTIFY-CFR Study (Joined Coronary Pressure and Flow Analysis to Determine Diagnostic Characteristics of Basal and Hyperemic Indices of Functional Lesion Severity-Coronary Flow Reserve).
BACKGROUND Coronary flow reserve has extensive validation as a prognostic marker in coronary disease. Although pressure-only fractional flow reserve (FFR) improves outcomes compared with angiography when guiding percutaneous coronary intervention, it disagrees with coronary flow reserve classification 30% of the time. We evaluated whether baseline instantaneous wave-free ratio (iFR) could provi...
متن کاملChange in coronary blood flow after percutaneous coronary intervention in relation to baseline lesion physiology: results of the JUSTIFY-PCI study.
BACKGROUND Percutaneous coronary intervention (PCI) aims to increase coronary blood flow by relieving epicardial obstruction. However, no study has objectively confirmed this and assessed changes in flow over different phases of the cardiac cycle. We quantified the change in resting and hyperemic flow velocity after PCI in stenoses defined physiologically by fractional flow reserve and other pa...
متن کاملDoes the instantaneous wave-free ratio approximate the fractional flow reserve?
OBJECTIVES This study sought to examine the clinical performance of and theoretical basis for the instantaneous wave-free ratio (iFR) approximation to the fractional flow reserve (FFR). BACKGROUND Recent work has proposed iFR as a vasodilation-free alternative to FFR for making mechanical revascularization decisions. Its fundamental basis is the assumption that diastolic resting myocardial re...
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ورودعنوان ژورنال:
- Circulation. Cardiovascular interventions
دوره 7 4 شماره
صفحات -
تاریخ انتشار 2014