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Showing 1 to 20 of 24 for “"abdominal aorta"”.
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Aorto-enteric Fistula Following Abdominal Aorta Surgery
<p>Forty-six aorto-enteric fistuiae following abdominal aorta surgery are here recorded. A number of these have never before been recorded in the literature. For the first time sixteen cases of these aorto-enteric fistulae that were subjected to surgical intervention have been tabulated. Twelve of …
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A Computational Model of Aneurysmal Flow at the Abdominal Aorta
Abdominal Aortic Aneurysm is a dilatation of the aortic artery that occurs in response to degradation of the wall structure. The present research focused on developing a realistic hemodynamic model of the aneurysm using a new method to assign boundary conditions. A three element Windkessel model …
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The Effect of Exercise on Atherosclerosis in The Abdominal Aorta and Coronary Artery of Mature Swine
Made available in DSpace on 2014-12-12T01:12:23Z (GMT). No. of bitstreams: 1 7414537.pdf: 5865838 bytes, checksum: dda79901437238da0a308afc27f01927 (MD5) Previous issue date: 1974
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Towards An Understanding Of The Etiology Of Abdominal Aortic Aneurysms: Identification Of Genes Implicated In Aaa Risk And Development
<p>Abdominal aortic aneurysm (AAA) is a common disease for which mechanisms of formation are still not well understood. Despite a strong genetic component to AAA risk, specific risk alleles are still largely unidentified. AAA is also a localized disease with a majority occurring in the infrarenal …
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Spontaneous rhythmic contractions in the coarcted aorta of hypertensive rats
… which had undergone a complete occlusion of the aorta between the origin of the renal arteries. Eight days post-occulsion, measurements in awake rats showed that arterial pressure in the thoracic aorta (pressure-loaded region) was 168.35 $\pm$ 1.28 mm Hg (n = 104), while in the abdominal aorta …
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Dietary cholesterol, tissue phospholipids and prostacylin production of rat aorta
… were sacrificed and blood samples, along with abdominal and thoracic aorta cross-sectional ring segments. were collected. The serum cholesterol levels, fatty acid compositions in the phospholipids (PL) of the aortic tissues (thoracic and abdominal aorta tissues combined), and the endogenous …
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The development of an integrated modelling framework to aid with the design of endovascular devices
… programme mechanically characterised three human abdominal aortas using uniaxial and biaxial characterisation methods. By deploying Anaconda proximal ring devices within cadaver specimens and recording deformations, the programme produced detailed out-of-plane deformation data for vascular tissue. …
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The performance of cross-linked acellular arterial scaffolds as vascular grafts; pre-clinical testing in direct and isolation loop circulatory models
… implanted them as trans- position grafts in the abdominal aorta of rats as direct implants and separately as indirect, isolation-loop implants. All implants resulted in high patency and animal survival rates, ubiquitous encapsulation within a vascularized collagenous capsule, and exhibited lack …
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Free and peptide amino acid fluxes across the mesenteric and non-mesenteric viscera of sheep and calves
… steers were surgically cannulated in the abdominal aorta, mesenteric vein and portal vein. All animals were fed an orchardgrass, corn, SBM-based diet. The steers received three abomasal infusions; a control solution, and an amino acid mixture simulating casein and casein each at a rate …
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Clinical Aspects on Chimney Stent Graft Technique in Endovascular Repair of the Aorta.
Introduction: Open repair of the aorta carries a high risk for morbidity and mortality especially in the elderly population and in patients unfit for major surgery. Endovascular aortic repair is safe, durable and effective when there is adequate proximal and distal sealing zone for the aortic stent …
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Transcriptomic Analysis for the Identification and Prioritization of Treatment of Abdominal Aortic Aneurysms
Abdominal aortic aneurysms are pathological dilations of the abdominal aorta, characterized by a high mortality rate, and a lack of effective prognostic predictors. As the disease progresses, the aortic wall becomes significantly degraded and eventually the structure is compromised, leading to …
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Comparative histology and histochemistry of the vascular system in the White Plymouth Rock hen and the pit fowl hen
The abdominal aorta, brachial and iliac arteries, of 8 White Plymouth Rock hens and 8 pit fowl hens were examined histochemically. The purpose being to (1) determine whether arterial anatomical differences exist; (2) compare the vessels of both groups histochemically; (3) uncover differences in …
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The fate of proximally excluded iliac arteries following open repair of abdominal aortic aneurysms
Aneurysms occur throughout the length of the aorta, with a large proportion occurring in the infra-renal segment of the abdominal aorta (least 9 to 10 times more common than thoracic aortic aneurysms). Aneurysmal disease of the aorto-iliac segment which commonly occurs as a result of a degenerative …
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Myocardial fibrosis and pathological hypertrophy in the rat with aorta-constricted hypertension
We used the inter-renal abdominal aorta constriction model to induce hypertension and cardiac hypertrophy in rats within seven days after surgery. Rapid induction of hypertension resulted from the activation of the renin-angiotensin system (RAS) due to renal ischemia. Microscopically, marked …
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Quantifying AAAs and developing FEA models for stent grafts
Abdominal Aortic Aneurysm (AAA) is an irreversible dilation of the lower section of the aorta that poses lethal threat to the patient. Medical intervention has been conducted for decades via open surgery, yet more recently, the minimally invasive technique of endovascular aneurysm repair (EVAR) is …
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The potential of sphingolipid depletion for the treatment of atherosclerosis
… aortic arch and distal sites of the thoracic and abdominal aorta. There was also a trend towards a reduction in lesion area at the aortic root. Myriocin treatment resulted in significant reductions in both plasma SM and GSL concentrations. Moreover, it was demonstrated that myriocin significantly …
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The Efficacy Of Prostaglandin Synthase Inhibition On Attenuating Pressure Overload Induced Cardiac Remodeling
… remodeling. Rats with surgically constricted abdominal aorta were used as an animal model for pressure overload and associated Left ventricular (LV) structure and functional changes were measured by pressure-volume admittance catheterization. Human cardiac fibroblasts were used to assess the …
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Development and Validation of Non-Invasive Methods for the Identification of Patient-Specific Hyperelastic and Anisotropic Material Properties of Abdominal Aortic Aneurysms In Vivo
An abdominal aortic aneurysm (AAA) is a permanent local dilatation of the human abdominal aorta, posing a severe health risk due to a rupture related mortality rate of up to 85 percent. Current clinical risk assessment relies on a population derived threshold value for the maximum aneurysm …
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The role of pulmonary arterial stiffness in right ventricular remodelling in COPD
… calculate pulmonary PWV and of the ascending and abdominal aorta in order to calculate the aortic pulse wave velocity. Those with COPD demonstrated evidence of pulmonary arterial stiffening and pulmonary vascular remodeling with higher pulmonary artery area at end diastole (COPD: 2.36 ± 0.56 …
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