Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"arterial compliance"”.
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Cerebrovascular influence on brain and cognitive aging
… This method is based on the estimation of the arterial pulse across the whole scalp. From these estimates, three indices reflecting arterial health can be extracted: pulse amplitude, arterial compliance and pulse transit time. In their initial paper, Fabiani et al. (2014) showed that, in older …
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The effects of an acute bout of whole-body vibration on pulse wave velocity in individuals with SCI
… spinal cord injured (SCI) population. Reduced arterial compliance is a cardiovascular risk factor and whole body vibration (WBV) has be en shown to improve arterial compliance in able-bodied individuals. The study investigated the effect of an acute session ofWBV on arterial compliance as …
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Assessing Endothelial Dysfunction Estimating the Differences Between 3 Minute and 5 Minute Reactive Hyperemia
… sufficient to elicit a significant difference in arterial compliance from baseline. Twenty healthy Cal Poly students were assessed, (n=12 female, n=8 male) aged 22 years old with a standard deviation of 2.04 years. Arterial compliance was estimated by measuring the peak-to-peak oscillations for …
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Acute arterial responses to physiological and psychological stress
… and psychological stress on indices of arterial function. During likely elevation of sympathetic outflow following isometric exercise, indices of conduit and central artery function indicated stiffening in excess of 10%. During and following acute mental stress the large arteries …
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Does acute hypoxia and high altitude exposure adversely affect cardiovascular performance?
… 3. HA exposure is associated with a reduction in arterial compliance and an increase in central blood pressure (BP). 4. HA exposure reduces heart rate (HR) variability (HRV) that is linked to AMS an increased risk of cardiac arrhythmias. Methods: This consisted of eight independent studies …
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Understanding the role of cerebrovascular health in cognitive aging: a multi-modal noninvasive human neuroimaging approach
… in a group of older adults (ages 55-85). Using arterial spin labeling (ASL) to quantify CBF, we found that blood flow in the gray matter was positively correlated with CRF and negatively correlated with age (Zimmerman et al., 2014). Subsequent analyses revealed that CRF fully mediated the …
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The effect of single nucleotide polymorphisms of oxidative stress genes and low grade inflammation upon pulse wave contour analysis, a useful non invasive, intermediate vascular phenotype.
… oxide synthase gene, NOS3, have an effect upon arterial compliance in patients with coronary artery disease (Chapters 4,5 and 6). In healthy volunteers, free of cardiovascular disease whether a relationship existed between markers of low grade inflammation and arterial stiffness (Chapter 7). …
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Modeling and monitoring of cardiovascular dynamics for patients in critical care
… both intra-beat and inter-beat dynamics of arterial blood pressure, and incorporates a parametrized model of arterial compliance. We validated our method with animal data from laboratory experiments and ICU patient data.
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Assessment of Brain Perfusion and Vascular Compliance with Magnetic Resonance Imaging
… index of brain vascular function, vascular compliance represents the dynamic ability of arteries to dilate or retract in response to blood pressure alternations. An artery vessel with high compliance can better buffer the pulsatility of blood flow, thereby protecting the downstream …
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Design and implementation of an apparatus for hydrodynamic and fatigue testing of prosthetic aortic valves
… on the four-element Windkessel model of the arterial system. This simple lumped parameter electrical analogy of the arterial system takes aortic and arterial resistance, arterial compliance, and blood inertance into account to simulate total arterial impedance. This model was developed with …
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Effect of Nebivolol and Lifestyle Modification on Large Artery Stiffness in Middle-Aged and Older Hypertensive Adults
… disease and clearly associated with arterial stiffness. Arterial stiffness generates higher afterloads and diminishes coronary perfusion thereby causing ventricular hypertrophy and ischemia. Importantly, arterial stiffness is an independent predictor of cardiovascular disease risk and …
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Arterial Destiffening with Weight Loss in Overweight and Obese Middle-Aged and Older Adults
… development, which is independently predicted by arterial stiffness (AS). Arterial stiffening is closely related to age-related arterial structural/functional changes and obesity. Therefore, obese middle-aged and older adults are considered a high CVD risk population. In light of the current …
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The cardiovascular profile of the low renin phenotype in a black South African population
… total peripheral resistance (TPR) and Windkessel arterial compliance. Active plasma renin levels were determined at rest and when a stressor (CPT) was applied. Reactivity was calculated for each participant as the percentage change from the resting value. For the second objective, black (N=162) …
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PULMONARY ARTERY STIFFNESS IN RACEHORSES AFFECTED BY EXERCISE-INDUCED PULMONARY HEMORRHAGE
… (PAS), a Doppler-derived index of pulmonary arterial elasticity, can be used as a practical, non-invasive indicator of pulmonary vascular involvement in Thoroughbred racehorses affected by EIPH. Several studies were conducted to provide a comprehensive overview of the pathophysiological …
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Studies of vascular function in patients with heart failure and either preserved or reduced left ventricular systolic function
… of HF-PSF. Although there are limited data on arterial stiffness in HF-PSF, there have been no studies examining other parameters of vascular function in HF-PSF and vascular function has never been formally compared in cohorts of patients with HF-PSF and heart failure due to reduced LV systolic …