منابع مشابه
Novel Ventricular Repolarization Indices in Patients with Coronary Slow Flow.
Background: Coronary slow flow (CSF) phenomenon is described angiographically as delayed progression of the injected contrast agents through the coronary arteries. Aim of this study was to analyze ventricular repolarization in CSF patients by using Tpeak-Tend interval, Tpeak-Tend/QT ratio, Tpeak-Tend/QTc ratio and other repolarization parameters since these parameters are used as predictors for...
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Coronary angiography is still the gold standard in the diagnosis of coronary artery disease, although its limitations in the assessment of haemodynamic severity of epicardial stenosis are widely recognised [1, 2]. In the 1990s, these limitations of angiography led to the introduction of sensorequipped guidewires measuring pressure and flow to optimise the diagnostic workup during cardiac cathet...
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Pressure-wire technology, most typically fractional flow reserve (FFR), has provided interventional cardiologists with a means of determining the physiological importance of a stenosis during angiography. There has been renewed interest in coronary physiology in the light of guideline recognition, ongoing clinical research and new technologies changing the paradigm of how assessment is performe...
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The original studies of coronary balloon angioplasty performed by Andreas Gruentzig attempted to employ physiological guidance by measuring trans-stenotic gradients with over-the-wire angioplasty catheters. However, these catheters were of such large calibre that they contributed to the stenosis being assessed and in addition, measurements were made at rest as the importance of assessing functi...
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The coronary vasculature has been traditionally divided into three functional groups: large conductance vessels visible on coronary angiography, which offer little resistance to blood flow; small resistance vessels ranging in size from about 250 to 10 μm in diameter; and veins. Although it has been taught that arterioles (precapillary vessels < 50 μm) account for most of the coronary resistance...
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ژورنال
عنوان ژورنال: Circulation: Cardiovascular Interventions
سال: 2020
ISSN: 1941-7640,1941-7632
DOI: 10.1161/circinterventions.119.008487