Sökning: "Inert gas washout"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Inert gas washout.

1. 1. Peripheral airway function in asthma and cystic fibrosis. Measurements using inert gas washout methods

   Författare :Henrik Ljungberg; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; acinar; adults; airway hyperresponsiveness; asthma; children; conductive; functional residual capacity; gas trapping; inert gas washout; infants; peripheral airways; plethysmography; respiratory function tests; ventilation inhomogeneity;

   Sammanfattning : It is increasingly recognised that asthma and cystic fibrosis (CF) frequently involves the peripheral airways. Characteristic features of abnormal peripheral airway function are uneven ventilation distribution and increased gas trapping. LÄS MER

3. 2. Ventilation distribution in the lung periphery measured by inert gas washout : influence of increased gravity, anti-G suit pressure, body posture, and breathing pattern

   Författare :Mikael Grönkvist; Göran Hedenstierna; Linköpings universitet; []
   Nyckelord :acceleration; anti-G suit; body posture; cdi; dcdi; human centrifuge; He; hypergravuty; lung; multiple-breath washout; single-breath washout; SF 6; standing; supune; trapped gas; ventilation distribution; MEDICINE; MEDICIN;

   Sammanfattning : The lung is highly sensitive to forces of gravity and acceleration, and to surrounding pressures. This thesis aimed to assess the effects on ventilation distribution in peripheral lung units when changing the direction or magnitude of the gravitational vector and when compressing the lower body half with an anti-G suit (AGS). LÄS MER

4. 3. The asthmatic airway response – effects on physiology and biomarkers

   Författare :Henning Stenberg; allergologi och palliativ medicin Lungmedicin; []
   Nyckelord :Asthma; Exhaled breath temperature; Exercise; Allergen challenge; Small airways; Airway provocations; Spirometry; Impulse oscillometry; Inert gas washout; Body plethysmography; Club cell protein CC16 ;

   Sammanfattning : Asthma is a common airway inflammatory disease, associated with a variable degree of airway obstruction. It is a heterogeneous condition with large variations in severity and clinical presentation. Moreover, disease activity can vary from time to time. Taken together, these factors make the diagnosis, monitoring and treatment of asthma challenging. LÄS MER

5. 4. Exahaled NO and small airway function in asthma and cystic fibrosis

   Författare :Christina Keen; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; asthma; exhaled NO; children; cystic fibrosis; flow independent exhaled nitric oxide; multiple breath inert gas washout; polyunsaturated fatty acids;

   Sammanfattning : Background: Asthma and cystic fibrosis (CF) are chronic inflammatory airway disorders known to involve the peripheral airways. Non-invasive tests sensitive to peripheral airway function and inflammation are therefore of high priority. LÄS MER

7. 5. Effects of gravity and posture on the human lung

   Författare :Malin Rohdin; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER