Search for dissertations about: "lower body positive pressure"

Showing result 1 - 5 of 15 swedish dissertations containing the words lower body positive pressure.

2. 1. Effects of anesthesia on esophageal sphincters in obese patients

   Author : Alex de León; Magnus Wattwil; Ola Stenqvist; Örebro universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Lower esophageal sphincter; upper esophageal sphincter; barrier pressure; obesity; high-resolution solid-state manometry; anesthesia; MEDICINE; MEDICIN; Surgery; Kirurgi; Anaesthetics; Anestesiologi; Surgery; Kirurgi; Anaesthesiology; Anestesiologi;

   Abstract : The lower esophageal sphincter (LES) and the upper esophageal sphincter (UES) play a central role in preventing regurgitation and aspiration. The aim of this thesis was to evaluate the UES, LES, esophageal (E) and barrier (Br) pressures (P) using high resolution solid state manometry (HRSM). READ MORE

4. 2. Markers of tissue ischaemia in lower limb arterial insufficiency : an experimental and clinical study

   Author : Göran Lundberg; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Limb ischaemia; diagnosis; metabolism; skeletal muscle; subcutaneous adipose tissue; microdialysis; muscle biopsy; lactate; perfusion; lower body positive pressure; human; rat; ;

   Abstract : Lower limb ischaemic rest pain, ulcers or gangrene are late consequences of advanced peripheral arterial disease, one of the facets of systemic atherosclerosis. The majority of patients will meet current criteria for critical limb ischaemia (CLI). Life expectancy in these patients is severely limited mainly due to coexisting coronary heart disease. READ MORE

5. 3. Lung mechanics in the aging lung and in acute lung injury. Studies based on sinusoidal flow modulation

   Author : Ulrika Bitzén; Lund Klinisk fysiologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Diagnostics; Diagnostik; acute lung injury; lung mechanics; acute respiratory distress syndrome; intensivvård; Anestesiologi; intensive care; Anaesthesiology; Andningsorganen; Respiratory system; Fysiologi; Physiology; flow regulation; method; lung resistance; compliance; aging;

   Abstract : Knowledge about lung mechanics is of interest in intensive care to adjust mechanical ventilation and in the lung laboratory for diagnostics and evaluation of patients with various kinds of respiratory diseases. In mechanical ventilation a single inspiratory elastic pressure-volume (Pel/V) curve is difficult to interpret due to continuing re-expansion of collapsed lung units over a large pressure interval. READ MORE

6. 4. Effects of gastric bypass surgery in patients with obesity and type 2 diabetes

   Author : Vasileios Liakopoulos; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; gastric bypass; bariatric surgery; obesity; type 2 diabetes mellitus; cardiovascular disease; mortality; risk factors; renal disease; adverse events;

   Abstract : Background: The effects of Roux-en-Y gastric bypass (GBP) have not been adequately explored in patients with concurrent obesity and type 2 diabetes mellitus (T2DM) to the same extent as has occurred for individuals with obesity alone. The overall aim of this thesis is to thoroughly examine the effects of GBP surgery in patients with obesity and T2DM in terms of cardiovascular disease and mortality, changes in various comorbidities, risk factors, and renal function as well as reporting adverse events. READ MORE

7. 5. Study of Supersonic Jet Noise Reduction using LES

   Author : Haukur Hafsteinsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; G3D; Supersonic Jet; PIV; CD-nozzle; CFD; Compressible flow; CAA; Noise Reduction; LES; Flow Control;

   Abstract : Increases in air traffic and denser population around airports have led to stricterregulations on aircraft noise. High noise levels from high-speed aircraft can causehearing damage in pilots and the airfield personnel. The engine is the main sourceof noise of all jet aircraft and is therefore a key component for improvement. READ MORE