YI 1.1 Aortic Impedance and Total Arterial Compliance from Regional Pulse Wave Velocities
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چکیده
منابع مشابه
Pulmonary arterial pulse wave velocity and impedance in man.
Tlie differential pressure method of Womersley and McDonald was used to measure instantaneous blood flow in the main pulmonary artery in ten human subjects. Three subjects had normal pulmonary arterial pressures and flows, seven had mitral stenosis and pulmonary hypertension. The spectrum of input impedance versus frequency was similar to that previously reported for the dog and rabbit, with th...
متن کاملTotal arterial compliance estimated by stroke volume-to-aortic pulse pressure ratio in humans.
On the basis of the windkessel model, the stroke volume-to-aortic pulse pressure ratio (SV/PP) has been proposed as an estimate of total arterial compliance, but recent studies have questioned this approximation. Aortic pressure was obtained at rest in 31 adults undergoing cardiac catheterization (47 ± 14 yr): controls ( n = 7), patients with dilated cardiomyopathy ( n = 10), and patients with ...
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Introduction: Pulse wave velocity (PWV) as a measure of aortic stiffness is an important clinical marker for the presence of atherosclerosis [1,2]. For PWV estimation using Phase contrast (PC) MRI transit-time (TT) methods have been employed which estimate temporal differences in flow waveforms between two locations in the vessel with known distance [3]. However, precision was limited by the ac...
متن کاملThe Role of Index of Valvular-Arterial Impedance and Systemic Arterial Compliance after Aortic Valve Replacement
Mechanical valvular obstruction and reduced arterial compliance combine to increase left ventricular afterload in pati-nets with aortic stenosis (AS). 1) As a result of the recognition that valvular and arterial abnormalities both play important roles in determining the overall impedance to left ventricular ejection in AS, it is now clear that standard methods of quantifying valvular stenosis, ...
متن کاملAge-associated changes in regional aortic pulse wave velocity.
OBJECTIVES This study was designed to determine noninvasively the age-associated changes in regional mechanical properties in normals using phase-contrast magnetic resonance imaging (PCMRI). BACKGROUND It has been well documented that there is a progressive increase in aortic pulse wave velocity (PWV) with age. Previously, PWV has been measured at a single aortic location, or has compared art...
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ژورنال
عنوان ژورنال: Artery Research
سال: 2020
ISSN: 1876-4401
DOI: 10.2991/artres.k.201209.001