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 20 of 91 for “"pulse wave"”.
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Local measurement of the pulse wave velocity using Doppler ultrasound
… Several methods focus on the measurement of pulse wave velocity, the velocity at which the pressure wave propagates, because it is directly related to arterial stiffness. The objective of this project is to investigate the feasibility of measuring local pulse wave velocity from the blood flow …
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Design of Pulse Wave Velocity and Blood Pressure Devices for Cardiovascular Health Evaluation.
L'abstract è presente nell'allegato / the abstract is in the attachment
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The Relationship of Physical Activity and Fruit and Vegetable Intake on Pulse Wave Velocity
… was then measured using carotid-femoral pulse wave velocity (PWV). While supine, a cuff was placed around the right thigh and inflated. Concurrently, a tonometer was placed over the carotid artery and data were obtained from both carotid and femoral waveforms after 10 consecutive seconds. …
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A Novel Method to Assess Pulse Wave Velocity using Single Velocity Encoding in Phase Contrast Imaging
The measurement of pulse wave velocity (PWV) using conventional phase contrast magnetic resonance imaging (PC-MRI) is recognized as a standard technique to assess arterial stiffness by measuring the arrival times of blood velocity waveforms. Conventional PC-MRI requires the acquisition of two sets …
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Changes in the Cameron Heartometer and Johnson Oscillometer Pulse Wave Tracings With Progressive Loads of Work
Made available in DSpace on 2014-12-04T21:57:01Z (GMT). No. of bitstreams: 1 0002217.pdf: 8096556 bytes, checksum: d6eefdfa01fbf77e31a8f978ed0b9d24 (MD5) Previous issue date: 1950
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The relevance of performing 24-hour ambulatory blood pressure And pulse wave analysis in kidney transplant recipients
… more informative regarding BP management, and if pulse wave analysis (PWA) would assist in risk stratification. This study included patients older than 18 years, with working graft kidney for >12 months, and without problems affecting BP measurement and interpretation. After performing office BP …
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The effects of an acute bout of whole-body vibration on pulse wave velocity in individuals with SCI
… ofWBV on arterial compliance as measured by pulse wave velocity (PWV). On separate days, arm, leg and aortic PWV were measured pre- and post- a 45 minute session of passive stance (PS) and WBV. The WBV was intermittent with a set frequency of 45Hz and amplitude of O.6mm. There was no …
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Cardiovascular Parameters Including the Time Derivatives of the Brachial Pulse Wave in the Assessment of Physical Condition and the Efficacy of Training Programs
Made available in DSpace on 2014-12-10T18:06:41Z (GMT). No. of bitstreams: 1 6503174.pdf: 5474661 bytes, checksum: 2477f3a3987480e7c0ed1ff8fdc3cbb3 (MD5) Previous issue date: 1964
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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.
… as well as a non invasive vascular phenotype, pulse wave analysis. This thesis reports a series of studies (utilising the techniques described in chapter 2) which aimed to ascertain:- The reproducibility of pulse contour analysis as a non invasive intermediate cardiovascular phenotype (Chapter …
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Centrinių ir periferinių arterijų struktūrinių ir funkcinių pakitimų ypatumai sergant metaboliniu sindromu /
… intima-media thickness, femoral-carotid arteries pulse wave velocity and left ventricular myocardial mass index were found. However, higher number of atherosclerotic plaques in carotid artery was found only in females. Risk of cardiovascular disorders in males and females with metabolic syndrome …
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Impact of Prolonged Sitting on Central Hemodynamics: Role of Intermittent Pneumatic Compression Therapy
… sitting increases central blood pressure, aortic pulse wave reflection and vascular stiffness. <strong>Methods:</strong> In 10 subjects (Age=22±2 yrs, BMI=28±4kg/m<sup>2</sup>, 3 females), brachial artery pulse wave analysis was performed before (baseline-BL), during, and after 3 hours of sitting. …
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Determination of Aortic Elasticity from MR- and CT- Images Using an Automatic Active Contour Model
… through the cardiac cycle or alternatively, the pulse-wave velocity has to be determined. In this work we determined the compliance via 3 MR methods (FLASH, TrueFISP and pulse-wave) and additionally CT. We developed an algorithm for the automatic segmentation of the artery wall from MR and CT …
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Effects of exercise, with and without an associated energy deficit, on postprandial metabolism and appetite regulation
… ghrelin and acylated ghrelin concentrations, pulse wave velocity and energy substrate utilisation were determined. Subjective ratings of appetite and food palatability and energy and macronutrient intakes at an ad libitum buffet meal were also recorded. Thirteen overweight and obese, …
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Developing a low-cost cardiovascular mobile screening kit
… stiffening, the root issue of many CVDs. Since pulse wave velocity (PWV) and pulse wave analysis (PWA) features were known to be correlated with arterial stiffening, we developed a Python API that would extract these features from the pulse waveforms collected using the devices in our screening …
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Haemodynamic consequences of Spinal Anaesthesia for non-emergency Caesarean section
… non-invasive measures as well as the use of a pulse wave form analysis monitor to measure maternal cardiac output. A validation study was performed comparing this method with thermodilution in patients with postpartum complications of preeclampsia. Abstract viii The results of these studies …
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Effect of Nebivolol and Lifestyle Modification on Large Artery Stiffness in Middle-Aged and Older Hypertensive Adults
… or combination for 12 weeks. β-stiffness index, pulse wave analysis, and arterial compliance were measured at baseline and following the intervention. No baseline differences in variables of interest were observed between groups. In contrast to our hypothesis, lifestyle modification, nebivolol, …
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Magnetic Resonance Assessment of Aortic Stiffness in Diabetes and Cardiovascular Disease
… and can be estimated from measurements such as pulse wave velocity (PWV). Aortic PWV can be estimated from the carotid and femoral sites (CFPWV) by applanation tonometry and ultrasound. However, these methods only estimate a gross global burden, which may mitigate regional stiffness within the …
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The impact of vascular calcification among dialysis dependent South African CKD patients. A five year follow up study. Cardiovascular mortality and morbidity, ethnic variation and hemodynamic correlates
… abdominal radiograph) and vascular stiffness by pulse wave velocity. RESULTS Sixty-six of the original 74 participants, studied a baseline, were identified. The median age was 46.6 years (37.6-59.2) and 57.6% were women. Abdominal aortic calcification showed no progression among Blacks [baseline …
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On the use of switched-capacitor multi-level inverters for electro-aerodynamic thrust applications
… capable of generating a variety of AC waveform shapes. The power draw of the DBD and the DC corona discharge current were measured for each waveform at a DBD voltage of 6kVpp and 10kHz, and used to estimate the thrust to DBD power characteristics of each waveform. The estimated thrust …
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