Inhalative bronchiale Provokationstests bei Kindern: Vergleichende Messungen der Oszillations-, Verschlußdruck- und plethysmographischen Resistance

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Abstract
Examination of the lung function and bronchial provocation tests are useful for confirmation of an airway obstruction. There is a need for measurements independent of child cooperation. The standard method is body plethysmography. Forced oscillation method and interrupted occlusion method were recently introduced. Measurements of airway resistance by body plethysmography (Raw), by forced oscillation (Ros) and by interrupted occlusion method (Rvd) were compared during 78 inhalative bronchial provocation tests. The correlation index between Raw and Ros total was 0,84 and between Raw and Rvd 0,89. There is a good sensitivity and specifity in allergen bronchial provocation testing in all three methods. A bronchial sensitivity is confirmed in body plethysmography by 100% increase of Raw. In the interrupted method a 50% increase of Rvd in children smaller than 165 cm and in forced oscillation method a relative increase of 25% (0,15 kPa/l/s) is sufficient to assess a bronchial sensitivity to tested allergen.

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