It comprises of tests such as spirometry, gas diffusion test, body plethysmography, bronchial provocation test, and others.
On the basis of the type, the market is segmented into spirometry, gas diffusion test, body plethysmograph, bronchial provocation test, and others.
For confirmation of asthma diagnosis, bronchial provocation
tests can be included in asthma prevalence protocols as the bronchial reversibility test might show false negative results particularly in subjects with intermittent symptoms.
Godfrey, "Bronchial provocation
tests in young children using tracheal auscultation," The Journal of Pediatrics, vol.
Another study was performed on the group of patients with atopic asthma and demonstrated increased YKL-40 levels in induced sputum; several hours after an allergen, bronchial provocation test inducing an allergic airway inflammation was performed .
Hong, "YKL-40 in induced sputum after allergen bronchial provocation in atopic asthma," Journal of Investigational Allergology & Clinical Immunology, vol.
and dilation test were not included in the protocol.
Clinical symptoms and results of skin test, RAST and bronchial provocation
test in thirty-three papain workers: Evidence for strong immunogenic potency and clinical relevant 'proteolytic effects of airborne papain'.
The results of this study indicate a higher frequency of bronchial hyperresponsiveness to bronchial provocation
by the exercise method (40%) than that by the hypertonic saline solution inhalation method (26.7%), but differences were not significant (Z = 1.107; P = 0.268).
Partial responder and nonresponder patients entered the next diagnostic phase: a methacholine bronchial provocation
test (MPT) (7) and eosinophil count with induced sputum by hypertonic saline (3% NaCl).
Elsewhere, oral or bronchial provocation
with different doses of aspirin is common.
Nasal provocation can be eschewed in favor of bronchial provocation
, but the upper airway test has several distinct advantages.