Search for dissertations about: "vasoconstriction"
Showing result 6 - 10 of 105 swedish dissertations containing the word vasoconstriction.
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6. Hypoxic pulmonary vasoconstriction and nitric oxide
Abstract : Hypoxia causes pulmonary vasoconstriction (HPV), improving oxygenation by redistribution of the pulmonary blood flow to better oxygenated lung regions. HPV is intrinsic to the pulmonary vascular smooth muscle cell, but can be modulated by several vasoactive substances, as for example endothelium derived nitric oxide (NO) and endothelin-1 (ET-1). READ MORE
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7. Laser Doppler Perfusion Monitoring and Imaging especially as regards testing for sympathetic nerve function
Abstract : The operating principle of all laser Doppler methods is based on the fact that incident photons shift in wavelength when interacting with moving blood cells passing through the microvascular network. After photodetection and further signal processing, the recorded parameter can be considered an arbitrary measure of tissue blood flow, and this is referred to as ?perfusion?. READ MORE
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8. Endothelin in the pulmonary circulation with special reference to hypoxic pulmonary vasoconstriction
Abstract : A number of substances originating from the pulmonary endothelium have recently been found to be involved in the regulation of pulmonary vascular tone. Accumulating evidence suggests that endothelial dysfunction contributes to pulmonary hypertension, an important clinical problem often associated with hypoxemia. READ MORE
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9. Modulators of hypoxic pulmonary vasoconstriction and pulmonary hypertension. Implications for new treatment strategies
Abstract : .... READ MORE
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10. Benefits of Spontaneous Breathing : Compared with Mechanical Ventilation
Abstract : When spontaneous breathing (SB) is allowed during mechanical ventilation (MV), atelectatic lung areas are recruited and oxygenation improves thereby. Whether unsupported SB at its natural pattern (without PEEP and at low pressure/small tidal volume) equally recruits and improves oxygenation, and if so by which mechanism, has not been studied. READ MORE