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Showing 1 to 12 of 12 for “"coronary blood flow"”.
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Hydrodynamic considerations of coronary blood flow with and without stenosis
Coronary stenosis is one of the most common heart diseases. Though not much is known concerning the growth of the stenosis in the coronary arteries, it is nevertheless possible to study the effects of the stenosis on the blood flow, and thus to determine its influence on myocardial perfusion. In …
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The Determinants of The Intramyocardial Distribution of The Coronary Blood Flow
Made available in DSpace on 2015-05-12T22:35:57Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7206916.PDF: 3406142 bytes, checksum: c77ba8df551c409962fbedb64052c906 (MD5) Previous issue date: 1971
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Multi-scale computational modeling of coronary blood flow: application to fractional flow reserve.
Introduction. Fractional flow reserve (FFR) is presently an invasive coronary clinical index. Non-invasive CT imaging combined with computational coronary flow modelling may reduce the patient’s burden of undergoing invasive testing. Research statement. The ability to obtain information of the …
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Coronary flow mechanics: an anatomically based mathematical model of coronary blood flow coupled to cardiac contraction
Coronary blood flow through the ventricular contraction cycle has been investigated in this thesis using an anatomically accurate computational model. Using Strahler ordered morphological data and an avoidance algorithm a three dimensional finite element model has been constructed of the largest …
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Muscle Metaboreflex Control Of Coronary Blood Flow And Ventricular Contractility During Dynamic Exercise In Normal And Heart Failure Conditions
… This increase in cardiac work should cause coronary metabolic vasodilation. However, little if any coronary vasodilation is observed due to concomitant sympathetically induced coronary vasoconstriction. In heart failure, cardiac output does not increase with MMA presumably due to impaired …
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Patient-specific blood flow modelling in diagnosis of coronary artery disease
… the approach for development of patient-specific coronary blood flow models in 3D and 0D domains based on coronary artery geometries reconstructed from Coronary Computed Tomography Angiography datasets (CCTA). The computed flow patterns extend the diagnostic value of CCTA, which, being noninvasive …
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Myocardial Topical Negative Pressure
… is possible to increase myocardial microvasular blood flow by applying a topical negative pressure source directly onto the myocardium. Topical negative pressure is a relatively new wound healing technique. When used in wound therapy, topical negative pressure has been shown to increase …
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Use of fluorescent micropsheres to measure coronary flow reserve in rat animal model
Heart attacks result from reduced or blocked blood flow through major coronary arteries, resulting in permanent damage to heart muscle. Coronary blood flow (CBF) is thus important to measure in experimental animal models of heart disease. A standard method to measure CBF uses tracer microspheres (O …
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Adaptive Mechanisms of the Heart to Ischaemic Stress
… magnetic resonance imaging to assess changes in coronary blood flow, central haemodynamics and transmural myocardial perfusion during exercise. In a separate group, we sought to examine the role of post-conditioning as a potential therapeutic tool in a randomised controlled trial involving …
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Regional myocardial perfusion : experimental and clinical studies in patients with coronary artery disease
Coronary artery disease has become a world wide medical problem. There is an overwhelming association between coronary atherosclerosis, angina pectoris, acute myocardial infarction and sudden death. The narrowing of coronary arteries is thought to damage the heart by limiting appropriate changes in …
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Muscle Metaboreflex Control Of Cardiovascular Function In Hypertension
… leading to a reflex increase in sympathetic outflow generating substantial increases in mean arterial pressure (MAP), cardiac output (CO) and heart rate (HR) - termed the muscle metaboreflex. When the reflex is activated during submaximal dynamic exercise, the pressor response occurs via …
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ΠΕΙΡΑΜΑΤΙΚΑΙ ΠΑΡΑΤΗΡΗΣΕΙΣ ΚΑΤΑ ΤΗΝ ΔΙΟΡΘΩΣΙΝ ΤΗΣ ΑΟΡΤΙΚΗΣ ΑΝΕΠΑΡΚΕΙΑΣ ΔΙΑ ΤΟΠΟΘΕΤΗΣΕΩΣ ΕΠΙ ΚΑΘΕΤΗΡΟΣ ΑΕΡΟΘΑΛΑΜΟΥ-ΒΑΛΒΙΔΟΣ ΕΙΣ 4 ΔΙΑΦΟΡΕΤΙΚΑΣ ΘΕΣΕΙΣ
… THE EFFECT OF A CATHETER MOUNTED VALVE ON THE CORONARY ARTERIAL CIRCULATION AND THE AORTIC PRESSURE DURING CORRECTION OF ACUTE EXPERIMENTAL AORTIC REGURGITATION. 1) THE CORRECTION OF AORTIC PRESSURE (DISTAL TO THE POSITION OF THE BALLOON VALVE) IN AORTIC REGURGITATION CAN BE ACHIEVED BY …