BASAL VERSUS HYPEREMIC CONDITIONS FOR PHYSIOLOGICAL STENOSIS SEVERITY ASSESSMENT
نویسندگان
چکیده
منابع مشابه
Discordance Between Resting and Hyperemic Indices of Coronary Stenosis Severity
Fractional flow reserve (FFR) is the ratio of distal coronary pressure to aortic pressure (Pd/Pa) across a stenosis measured during maximal hyperemia, most commonly achieved by the intracoronary or intravenous administration of adenosine. Multiple studies have demonstrated that FFR-guided revascularization improves clinical outcomes compared with angiographic guidance alone. This has resulted i...
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THREE FUNDAMENTAL ADVANCES in our knowledge underlie the rapidly evolving long-term treatment of coronary artery disease (CAD), summarized briefly here for perspective on the paper by Marques and colleagues (17) in this issue of American Journal of Physiology-Heart and Circulatory Physiology, on quantifying severity of coronary artery stenoses by their pressure-flow velocity relation. The first...
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The measurement of coronary flow reserve, traditionally calculated as the ratio of maximal hyperemic blood flow divided by basal flow, is difficult to interpret in serial studies because fluctuating hemodynamic parameters may affect either basal or hyperemic flow measurements. To determine the magnitude of this problem and to develop alternative approaches for measuring vascular reserve, 10 ane...
متن کاملHyperemic stenosis resistance index for evaluation of functional coronary lesion severity.
BACKGROUND Both coronary blood flow velocity reserve (CFVR) and myocardial fractional flow reserve (FFR) are used to evaluate the hemodynamic severity of coronary lesions. However, discordant results between CFVR and FFR have been observed in 25% to 30% of intermediate coronary lesions. An index of stenosis resistance based on a combination of intracoronary pressure and flow velocity may improv...
متن کاملThe diastolic hyperemic flow versus pressure relation. A new index of coronary stenosis severity and flow reserve.
The measurement of coronary flow reserve, traditionally calculated as the ratio of maximal hyperemic blood flow divided by basal flow, is difficult to interpret in serial studies because fluctuating hemodynamic parameters may affect either basal or hyperemic flow measurements. To determine the magnitude of this problem and to develop alternative approaches for measuring vascular reserve, 10 ane...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2014
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(14)61790-3