Infant spirometry
Infant spirometry can be obtained by forced flow-volume measurements applying the Raised Volume Rapid Thoracic Compression Technique during sedation. A non-expandable outer coat is wrapped around the infant’s chest and abdomen with an inflatable “balloon” inside. The infant’s lung volume is raised above the tidal range by inflating air through the pneumotacograph to a trans-respiratory pressure of 2 kPa mimicing a full inspiration before a compression force is applied via the squeeze-jacket causing a full forced expiratory maneuvers.
Bronchial responsiveness: methacholine aerosol is administered in increasing dose-step with a dosimeter attached to a nebulizer and inhaled from a metal space.
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