Sökning: "exhaled nitric oxide"

Visar resultat 6 - 10 av 45 avhandlingar innehållade orden exhaled nitric oxide.

  1. 6. Exhaled nitric oxide in schoolchildren with asthma

    Författare :Christophe Pedroletti; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Asthma; rhinitis; children; nitric oxide; allergen provocation; steroids.;

    Sammanfattning : Background: The fraction of nitric oxide in exhaled air (FENO) is believed to reflect the degree of allergic inflammation present in the lower airways. The diffusing capacity of NO in the airways (DawNO) and the concentration of this gas in the airway wall (FawNO) can be evaluated by determining FENO with different exhalation flow-rates. LÄS MER

  3. 7. Nitric Oxide Exchange in Central and Peripheral Airways : Determinants in Health and Respiratory Disease

    Författare :Andrei Malinovschi; Christer Janson; Kjell Alving; Lena Holm; Elisabeth Bel; Uppsala universitet; []
    Nyckelord :exhaled nitric oxide; alveolar NO; bronchial NO flux; extended NO analysis; asthma; smoking; snus; IgE-sensitization; pharyngo-oral tract; nitrate; nitrite; pulmonary hypertension;

    Sammanfattning : Background: Exhaled nitric oxide (NO) is a marker of eosinophilic steroid-sensitive inflammation in the airways of patients with respiratory disease. Moreover, information about the localization of inflammation in the respiratory tree is obtained by estimates of bronchial and alveolar contributions to exhaled NO. LÄS MER

  4. 8. Hypoxic pulmonary vasoconstriction and nitric oxide

    Författare :Kristina Hambraeus Jonzon; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :hypoxia; pulmonary vasoconstriction; regional pulmonary bloodflow; stimulus-response; nitric oxide; blood-borne distant effects; nitric oxide synthase activity; inhaled; exhaled; non-enzymatic;

    Sammanfattning : 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). LÄS MER

  5. 9. Nitric oxide in experimental pulmonary embolism

    Författare :Kristofer F Nilsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Nitric oxide (NO) is an important modulator of the pulmonary circulation both at basal state and in pulmonary hypertension. Low levels of NO are detectable in exhaled gas which is believed to mirror pulmonary NO formation and elimination. LÄS MER

  7. 10. Humming, nitric oxide and paranasal sinus ventilation

    Författare :Mauro Maniscalco; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The paranasal sinuses are air-filled bony cavities surrounding the nose. They communicate with the nose via the sinus ostia through which fluid and gases pass in both directions. A proper ventilation is crucial for sinus integrity and blockage of the ostia is a major risk factor for development of sinusitis. LÄS MER