Search
CSV
RISEffect of Aortic Stenosis on Coronary Flow Dynamics: Studies in an In-Vitro Pulse Duplicating System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamics of retrograde coronary flow in aortic valvular stenosis was investigated in an in-vitro pulse duplicating system which had the capability of simulating coronary flow. The ventricular ...
Relation of Maximal Opening of Disk Valves to Characteristics of Aortic Blood Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The maximal extent of disk opening of the Lillehei-Kaster and Björk-Shiley aortic disk prosthetic valves was evaluated in vitro in relation to the characteristics of flow across the valve and ...
Comparative Study of the Amount of Backflow Produced by Four Types of Aortic Valve Prostheses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To determine the extent of backflow encountered with currently used prosthetic valves, four types of aortic valves with comparable orifice diameters were tested in a pulse duplicating system. ...
Turbulent Stresses in the Region of Aortic and Pulmonary Valves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The specific features of turbulent flow that are likely to be damaging to the blood cells and platelets are the stresses which are intrinsic to turbulence, known as Reynolds stresses. These ...
Flow Visualization in a Mold of an Atherosclerotic Human Abdominal Aorta
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flow in a mold of an atherosclerotic human abdominal aorta and common iliac arteries was studied by flow visualization at a mean Reynolds number of 500 during both pulsatile and steady flow. ...
Patterns of Flow in the Left Coronary Artery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The purpose of this investigation is to describe our preliminary observations of the overall pattern of flow in a mold of the left coronary artery of a pig. Flow in the coronary mold was ...
Turbulent Stresses in the Region of a Hancock Porcine Bioprosthetic Aortic Valve
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The purpose of this study was to measure stresses associated with turbulence (Reynolds stresses), in the region of a 29-mm-dia porcine bioprosthetic valve (Hancock, Model 242). Studies were ...
Intramyocardial Pressure and Coronary Extravascular Resistance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Intramyocardial pressure is an indicator of coronary extravascular resistance. During systole, pressure in the subendocardium exceeds left ventricular intracavitary pressure; whereas pressure in the ...
Construction of Molds of Complex Arterial Segments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Molds of arterial segments would be advantageous for in-vitro assessments of arterial flow dynamics. Previous techniques have been limited because of their technical difficulty or because they ...
Flow Visualization Studies in a Mold of the Normal Human Aorta and Renal Arteries
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To study the flow behavior in regions where hemodynamic effects have been suggested to participate in atherogenesis, we evaluated flow in a mold of the aorta and renal arteries of a previously ...