Recovery time following bronchial challenge
نویسندگان
چکیده
منابع مشابه
Bronchial Challenge Testing
Airways hyper-responsiveness (AHR) is found in almost every patient with asthma. The degree of AHR is variable between individuals with asthma and can correlate to the severity of the underlying asthma. Equally treatment of asthma can modify the degree of underlying AHR. Measures of Airway hyper-responsiveness or bronchial challenge testing are therefore important in both the assessment and man...
متن کاملBronchial challenge tests: usefulness, availability and limitations
Indirect challenges to assess bronchial hyperresponsiveness are being increasingly used both for research and for assessment in the routine pulmonary function laboratory. ‘‘Indirect challenges act by causing the release of endogenous mediators that cause the airway smooth muscle to contract with or without inducing microvascular leakage. Because the responses to these challenges are modified or...
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BACKGROUND Bronchial allergen provocations are well established in asthma research. We evaluated the reproducibility of single-concentration, single-step allergen challenges in volunteers with grass pollen allergy. METHODS Forty-seven subjects underwent bronchial challenges using the aerosol provocation system nebulizer (Medicaid Sidestream) with incremental doses of grass pollen to define th...
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The reproducibility of the output of seven different nebulisers was tested. Nebulisers with a minimal increase in output at higher flow rates had less variability in the output. The selection of a nebuliser for bronchial provocation tests depends on the intranebuliser variability. Two nebulisers had highly reproducible outputs.
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Increases in minute ventilation (V'E) have been observed during exacerbations of asthma and in response to administration of histamine. However, it is not yet clear how the breathing pattern is affected, and whether the increase in V'E is found in general. In the present study, the effects of inhalation of histamine on respiratory frequency (fR), tidal volume (VT), V'E, and on functional residu...
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ژورنال
عنوان ژورنال: Respiratory Medicine
سال: 2005
ISSN: 0954-6111
DOI: 10.1016/j.rmed.2004.10.010