Herzog H, Perruchoud A
Poumon Coeur. 1977;33(1):79-86.
In patients with chronic obstructive bronchial disease, the maximal deposition of aerosol in the lung is obtained by intermittent positive pressure. In normal subjects the use of respirator hardly increases the aerosol deposition. On the contrary displacing the vaporizer in a lateral position reduces the bronchopulmonary deposition.