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 68 for “"haemodynamics"”.
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Predictive haemodynamics of the human carotid artery
… between a range of parameters and the associated haemodynamics and to devise strategies to provide guidance for clinical interventions and to assist in the design of stents and grafts. Initially, detailed statistical analysis is applied to a three dimensional parametric computer aided design (CAD) …
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Cerebral haemodynamics in man: Clinical and applied observations
This overview reviews seventeen publications between 1995 and 2005. CHE Imray was the first author of eleven of the papers, the senior author of four and a major contributor to two of the publications. The overview should be read in conjunction with the full copies of the seventeen publications …
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Mathematical Modelling of Brain Haemodynamics and Pressure-Volume Compensation
Traumatic brain injury (TBI) is a major global health issue with diverse demographics and a dynamic clinical profile. Modern care of a pathology with such variabilities involves individualised treatment, which requires an accurate understanding of pressure-volume interactions inside the cranium. …
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The Budd-Chiari syndrome : a study of diagnosis, haemodynamics and treatment
Symptomatic occlusion of the hepatic veins is a rare condition caused by tumour or thrombus arising either locally or by extension from the inferior vena cava. It is usually called the Budd-Chiari syndrome. The etiology remains unknown in over two-thirds of the patients. Its rarity and interest has …
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Investigations of photoplethysmography in the assessment of haemodynamics, vascular mechanics and haemorheology
Real‐time cardiovascular assessment is vital for monitoring patients at an early stage of cardiovascular diseases (CVDs), at risk of reoccurrence of heart attacks and strokes and during pharmacological and non‐pharmacological treatments. Blood Pressure (BP), Arterial Stiffness (AS) and Blood …
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Effects of smoking on arterial stiffness and haemodynamics in male adolescents in Lusaka
… the effects of smoking on arterial stiffness and haemodynamics in black male adolescents using PWV and Arterial Stiffness Index (ASI) and haemodynamic measurements. Methodology: Twenty-two black, male adolescents; age range 19-25 years, who were active-smokers were included in this observational …
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Long COVID related inflammatory processes. What is its impact on bone, joints and musculoskeletal microvascular haemodynamics?
… composition, joint integrity, and microvascular haemodynamics. Additionally, it aims to examine the role of inflammatory markers as potential etiological factors, assess health-related quality of life, and consider the contribution of inflammatory mechanisms to physiological changes. Methods: …
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Patient-specific computational haemodynamics in the arteriovenous fistula and aorta of a chronic kidney disease cohort
… is a key issue in failing cases. Localised haemodynamics and flow patterns are hypothesised to be prevalent factors behind AVF success. In addition to this, the impact of AVF creation on other parts of the haemodynamic network requires further elucidation. For example, the presence of an AVF …
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The role played by angiotensin (1-7) in the regulation of renal haemodynamics and excretory function in anesthetized rats
Initial studies have demonstrated that intra- renal infusion of Ang (1-7) caused a diuresis and natriuresis that was proportional to the degree of activation of the Renin Angiotensin Aldosterone System (RAAS). This raised the question as why the magnitude of this diuresis and natriuresis was …
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Computational modelling of global haemodynamics and its interaction with cerebrospinal fluid and brain dynamics with application to essential hypertension
Two major medical applications have inspired this thesis: firstly, the potential link between the venous circulation and several neurological pathologies, secondly arterial hypertension. The work presented in this thesis consists of a multiscale model of the global, arterio-venous circulation in …
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Distal Intraoperative Flowmetry for Assessment if Haemodynamics after Infrainguinal Arterial Reconstructions // Дистална интраоперативна флоуметрия за оценка на хемодинамиката след инфраингвинални артериални реконструкции
Цел: Да се представят и интерпретират термодинамичните показатели с прогностично значение за изхода от реконструктивни операции под ингвиналния лигамент, чрез интраоперативна флоуметрия и ефекта от медикаментозна вазодилатация под дисталната анастомоза на периферните байпаси. Представени са …
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Experimental and Statistical Analyses of the Effects of a Uniform Positive Pressure Applied to the Lower Limb in Humans on Vascular Haemodynamics
The determination of required pressure level to provide an optimum treatment is an important task for vascular clinicians. This thesis is a first investigation including both venous and arterial femoral velocities and distal microcirculation of the forefoot to evaluate the effects of varying …
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Effect of workload, upper body posture, and saddle set-back on full body angular joint kinematics, muscle activity, and lower limb haemodynamics
… or riding position affect lower limb blood flow haemodynamics. By using Near-Infrared Spectroscopy a cycling specific technique was developed to enable tissue oxygenation status of the lower limbs to be determined during cycling, which was then used to assess the effects of workload, trunk and …
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The Development of a Reduced Order Model for Prediction of Haemodynamic and Biochemical Changes in a Computational Cerebral Aneurysm Thrombosis Model
… fluid dynamics (CFD) model that couples haemodynamics and biochemistry was developed to simulate cerebral aneurysm thrombosis. The blood was modelled as a Newtonian fluid and thrombin generation curves (TGCs) were used to model the release of thrombin from the injured vessel walls. TGCs …
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Flow velocity measurement in haemodialysis access using 4D MRI
… about the AVF or AVG itself, as well as the haemodynamics is required. This data will then be used for computer modelling techniques and computational flow dynamics. Previously, the required imaging was provided by contrasted MRI, contraindicated in renal failure. Haemodynamic data was …
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Perioperative fluid administration to optimise haemodynamics without fluid overload in anaesthetised dogs : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Veterinary Science at Massey University, Manawatu, New Zealand
… management. Fluid administration improves haemodynamics during anaesthesia as it increases preload and thus cardiac output and blood pressure. However, excessive fluid administration can cause detrimental adverse effects, such as haemodulution and oedema, resulting in prolonged hospital …
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The study of blood flow in human arterial bifurcations by the combination of CFD and MRI
… health problem in the western world. The local haemodynamics is believed to be an initiating and localizing factor in this multilactorial disease process. To fully understand this interaction it is important to obtain detailed information about the local haemodynamics in accurate models of the …
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Effects of muscle contractions on biceps brachii oxygenation investigated by near-infrared spectroscopy
… contractions on biceps brachii oxygenation and haemodynamics using NIRS...
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