Search for dissertations about: "prone posture"

Showing result 1 - 5 of 9 swedish dissertations containing the words prone posture.

  2. 1. Effects of gravity and posture on the human lung

    Author : Malin Rohdin; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Acceleration; cardiac output; cardiogenic oscillations; closing volume; gas exchange; heart I-ate; human centrifuge; hypergravity; lung diffusing capacity; prone posture; pulmonary-capillary blood volume; rebreathing; single-breath washout; supine;

    Abstract : The presence of the gravitational force at the surface of Earth affects all of the organ systems in landliving creatures. The function of the lung is particularly susceptible to changes in the direction and magnitude of gravity because of the elastic structure of this organ. READ MORE

  4. 2. Regional ventilation, pulmonary perfusion and gas exchange in supine and prone positions

    Author : Margareta Mure; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ARDS; ALI; CPAP; Gas exchange; Prone position; Regional ventilation; Regional perfusion; Supine position;

    Abstract : The rationale for treating patients with acute lung injury in the prone position springs from a number of observations. Clinical reports have documented improved oxygenation when patients are turned prone. Regional vascular conductance is higher in dorsal lung regions regardless of posture. READ MORE

  5. 3. Studies on sitting pressure and buttock microcirculation : aiming at developing an alarm in the prevention of pressure ulcers in patients with spinal cord injuries

    Author : Johan Thorfinn; Disa Lidman; Folke Sjöberg; Henry Svensson; Linköpings universitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Blood supply; Buttocks; Hyperemia; Ischemia; Laser-Doppler flowmetry; Microcirculation; Posture physiology; Pressure; Skin blood supply; Medicine; Medicin;

    Abstract : Pressure ulcers in patients with spinal cord injuries are a major problem, the prevalence in this group being reported as high as 20 – 30 percent. Most pressure ulcers develop around the pelvic girdle, and the key-contributing factor in the development of pressure ulcers is ischaemia due to longstanding pressure. READ MORE

  6. 4. Body posture and gravity as determinants of lung perfusion and ventilation

    Author : Malin Ax; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Normal lung gas exchange depends on an intimate match between regional ventilation and regional blood flow in the lungs. The beneficial effect of the prone posture in acute respiratory failure is well documented but the mechanisms involved are not completely understood. READ MORE

  7. 5. Regional pulmonary vasoreactivity, with special reference to nitric oxide, prostacyclin and body posture

    Author : Danguolé Rimeika; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Regional pulmonary perfusion; nitric oxide; prostacyclin; NOS-inhibition; COX-inhibition; shunt; one-lung ventilation;

    Abstract : The primary aim of the study was to investigate possible mechanisms behind the improved arterial oxygenation in ventilator-treated patients with acute lung injury (ALI) or acute respiratory distress syndrome (ARDS) when turned into prone position. A secondary aim was to discover new knowledge of possible importance for treatment of patients with oxygenation problems in intensive care and during anesthesia. READ MORE