Search for dissertations about: "artificial ventilation"

Showing result 1 - 5 of 21 swedish dissertations containing the words artificial ventilation.

2. 1. Transmyringeal middle ear ventilation : an experimental approach to evaluation of its benefits and consequences

   Author : Ove Söderberg; Sten Hellström; Lars-Eric Stenfors; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Middle ear; tympanic membrane; otitis media; heat myringotomy; laser myringotomy; tympanostomy tube; transmyringeal ventilation;

   Abstract : A prerequisite for a functioning middle ear is an air-filled middle ear cavity. Aeration of the middle ear cavity is controlled by the Eustachian tube. Dysfunction of the Eustachian tube has long been acknowledged as a significant etiological factor in disorders of the middle ear, especially middle ear effusions. READ MORE

4. 2. Initiation of ventilation, surfactant treatment, and lung function after preterm birth

   Author : Lars Björklund; Lund Pediatrik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Respiration; Artificial; Pediatrics; Pediatri; Respiratory Function Tests; Pulmonary Surfactants; Newborn; Respiratory Distress Syndrome; Infant; Premature; Animals;

   Abstract : The thesis investigates lung function and the effects of rescue surfactant treatment in mechanically ventilated preterm human infants with respiratory distress syndrome (RDS), and the effects of ventilation at birth on the response to surfactant supplementation in preterm lambs. To assess lung function, the author recorded static pressure-volume (P-V) curves during passive deflation from total lung capacity (TLC) to ambient pressure and measured end-expiratory lung volume (FRC) during mechanical ventilation by tracer gas washout. READ MORE

5. 3. Synchronized delivery of inspired nitric oxide : Effects on oxygenation and pulmonary tension during artificial ventilation

   Author : Erkki Heinonen; Tim Higenbottam; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cell biology; nitric oxide; pulsed administration; pulmonary hypertension; oxygenation; equine; Cellbiologi; Cell biology; Cellbiologi; Physiology; fysiologi;

   Abstract : Nitric oxide (NO) is a mediator of vascular smooth muscle tension that metabolises rapidly in blood. NO delivered by inhalation can therefore be used as a selective pulmonary vasodilator to relieve pulmonary hypertension or to improve oxygenation with no systemic effects. READ MORE

6. 4. Improvement of Thermal Comfort in Buildings through Passive Design

   Author : Marcelino Januário Rodrigues; Byggnadskonstruktion; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Buildings; Sustainability; Energy Efficiency; Passive Design; Orientation; Shading; Ventilation; Materials; Temperatures; Thermal Comfort; Simulations; Retrofitting; Hot Humid Regions.;

   Abstract : In hot humid regions the high outdoor temperature has negative effects on the indoor temperature of buildings that are not designed to cope with the local climate. This leads to discomfort for the occupants. READ MORE

7. 5. Artificial Neural Networks (ANN) in the Assessment of Respiratory Mechanics

   Author : Gaetano Perchiazzi; Göran Hedenstierna; Björn Jonson; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Physiology; artificial neural networks; respiratory system compliance; respiratory system resistance; respiratory system time constant; intrinsic positive end expiratory pressure; PEEPi; animal model; acute lung injury; oleic acid; Otis model; Fysiologi; Physiology; Fysiologi;

   Abstract : The aim of this thesis was to test the capability of Artificial Neural Networks (ANN) to estimate respiratory mechanics during mechanical ventilation (MV). ANNs are universal function approximators and can extract information from complex signals. READ MORE