نتایج جستجو برای: exhaled breathexhaled air
تعداد نتایج: 210015 فیلتر نتایج به سال:
BACKGROUND Asthma is a chronic inflammatory airway disease, associated with episodes of exacerbations. Therapy with inhaled corticosteroids (ICS) targets airway inflammation, which aims to maintain and restore asthma control. Clinical features are only modestly associated with airways inflammation. Therefore, we hypothesized that exhaled volatile metabolites identify longitudinal changes betwee...
Selected ion flow tube mass spectrometry, SIFT-MS, has been used to determine the levels of volatile trace gases in the room air of three clinical environments within a busy teaching hospital. The main aims of this study were to establish background levels of trace gases and to compare them to levels typically found within exhaled breath. Over a period of one month, room air samples were collec...
We read with interest the manuscript of PIACENTINI et al. [1]. This paper shows that exhaled breath temperature plateau and exhaled nitric oxide (NO) are correlated in children with asthma. This finding is interesting considering that NO is a marker of inflammation and that exhaled breath temperature may also be used to assess inflammation in the airways in a noninvasive way. We previously show...
NO chemiluminescence in exhaled air: interference of compounds from endogenous or exogenous sources.
Nitric oxide determination in exhaled air using chemiluminescence analysers is increasingly used, but may be affected by various other components of the air sample. The influence of several compounds originating from endogenous or exogenous sources on NO readings has been studied. Defined amounts of water vapour, carbon dioxide, acetone, heptane, acetonitrile, oxygen, nitrous oxide and enfluran...
Nitric oxide (NO) is produced by many inflammatory cells [1]. Asthma is a disease in which inflammation plays an important role. Nitric oxide can easily be measured in the exhaled air of asthmatics and is used in research settings as a marker for inflammation [2]. Several studies, starting with ALVING et al. [3] in 1993, have shown increased amounts of NO in the exhaled air of asthmatic patient...
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