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 103 for “"Haemodynamic"”.
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Venous haemodynamic and cerebrospinal fluid anomalies associated with multiple sclerosis
This critical synopsis of prior work by Clive Beggs is submitted in support of a PhD by published work. The work focuses on venous and cerebrospinal fluid (CSF) anomalies associated with multiple sclerosis (MS) and other neurological diseases. MS is characterized by focal inflammatory lesions, …
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Haemodynamic consequences of Spinal Anaesthesia for non-emergency Caesarean section
… and improved bonding with the infant. Maternal haemodynamic stability is desirable both for maternal and neonatal safety, and to diminish maternal side-effects such as nausea and vomiting. Therefore, after an extensive literature review, clinically relevant aspects of spinal anaesthesia were …
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Secundum atrial septal defect in the adult. Clinical, haemodynamic and electrophysiological aspects.
… adult life. In this thesis important clinical, haemodynamic and electrophysiological aspects of ASD in the adult are explored. The diagnostic accuracy of magnetic resonance velocity mapping (MRvm)in calculating the pulmonary/systemic flow ratio (QP/QS)was assessed (I). The mean and maximal error …
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The effect of alcohol intoxication on haemodynamic physiology of acute cardiac tamponade
It is generally accepted that alcohol impairs haemodynamic physiology in normal subjects. Alcohol is also thought to have a detrimental effect in shock states. However, most research has concentrated on haemorrhagic shock, whereas in cardiac tamponade, the pathophysiology of shock is very …
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The relationship between preoperative hypertension and intraoperative haemodynamic changes known to be associated with postoperative morbidity
… hypertension may predispose to peri-operative haemodynamic changes known to be associated with perioperative morbidity and mortality, such as intra-operative hypotension and tachycardia. The objective of this study was to determine whether pre-operative hypertension was independently associated …
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Novel mechanisms for buffering the haemodynamic effects of dietary salt and the relevance of skin sodium in humans
… of sex and the relationship between skin Na+ and haemodynamic parameters and plasma VEGF-C were studied. Skin Na+ concentrations were expressed as the ratio Na+:K+ to correct for variability in sample hydration. The effect of dietary salt intake on skin gene expression of factors that potentially …
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Synchronised capacitor discharge in the management of cardiac arrhythmias with particular reference to the haemodynamic significance of atrial systole
In December 1962 a boy of 15 years was referred to the National Heart Hospital because of a ventricular tachycardia, which had proved resistant to treatment with procaine amide, quinidine, atropine, prostigmine, prednisone and digoxin. A second stage, total correction for tetralogy of Pallot had …
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Comparative effect of haemodynamic variables and rheological properties of the blood on the margination and adhesion of leukocytes and platelets
… to systematically determine the effects that haemodynamic variables, or rheological properties of the perfused, fluorescently-labelled blood, had on the behaviour of leukocytes and platelets. By varying shear rate and stress, blood haematocrit, and aggregation and deformability of red cells, …
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Haemodynamic responses to heat stress and hypohydration in resting and exercising humans: Implications for the regulation of skeletal muscle blood flow
… with marked alterations in limb and systemic haemodynamics in humans. However, the mechanisms underlying these alterations their effects on muscle blood flow are not well understood. The present thesis examined whether whole body and local heat stresses increased limb skin and muscle blood …
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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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Features of Haemodynamic Control During General Anesthesia for Laparoscopic Adrenalectomy // Особености на хемодинамичния контрол при провеждане на обща анестезия за лапароскопска адреналектомия
Тумори на надбъбречната жлеза се откриват сравнително често при образни изследвания на коремната кухина по друг повод. Малък процент са хормонално активни, числят се към редките заболявания и създават специфични предизвикателства пред анестезиологичния и хирургичния екип. Цел на нашето …
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A comparison of two bathing methods : Effects on the haemodynamic and subjective responses of low risk patients within 48 hours post myocardial infarction
… as compared to bed bathing patients, has on the haemodynamic and subjective responses of low risk patients within 48 hours of having a myocardial infarction. The sample consisted of 50 patients, 8 female and 42 male, with a mean age of 61 years (SD = 10). Twenty-five were randomly assigned to a …
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Mechanisms by which cardiac resynchronisation therapy improves cardiac performance in heart failure
… time that CRT results in an improvement in acute haemodynamic variables in heart failure patients with a narrow QRS duration that is comparable to the effects seen in heart failure patients with a broad QRS duration. In addition, we have shown that both biventricular (BIVP) and left ventricular …
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Maternal and cardiac output response to vasopressor therapy during spinal anaesthesia for Caesarean Section in severe preeclampsia
Background: The maternal haemodynamic responses to vasopressors during spinal anaesthesia for caesarean delivery in patients with severe preeclampsia, have not been accurately described. This study compared the haemodynamic effects of the vasopressors ephedrine and phenylephrine during spinal …
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Computational analysis on stent geometries in carotid artery
… Thus, this study was canied out to determine the haemodynamic performance on different geometrical stent strut configurations based on numerical modelling and statistical analyses. Six different stent strut configurations were 3-D modelled and simulated in different physiological conditions; …
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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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