NIOSHTIC-2 Publications Search
Gas and particle deposition in tracheobronchial airways.
Institute of Environmental Medicine, New York University Medical Center, New York, New York, 1987 Aug; :1-14
Gas and aerosol deposition efficiency in lung airways of humans and animals were investigated under two different airflow patterns: steady inspiratory flow and pulsatile inspiratory flow. The differences and similarities between deposition patterns in the human dichotomous branching tracheobronchial tree and the canine monopodial branching were documented. Hollow airway casts were prepared from whole lungs obtained at autopsy from a 45 year old man and from a mixed breed dog. Morphometric measurements were made on the casts through the fifth generation for all airway branches and to the terminal airways along a major branch path, a minor branch path, and a path which alternately selects major and minor branches. Flow measurements were made for inspiratory flow and pulsatile inspiratory flow. Pulsatile inspiratory flow was found to be more realistic than steady flow in this model. The hollow airway cast system was evaluated for use in investigations of patterns of gas transfer to airway surfaces.
NIOSH-Grant; Pulmonary-system-disorders; Aerosol-particles; Airway-obstruction; Airway-resistance
Environmental Medicine New York Univ Medical Center 550 First Avenue New York, N Y 10016
Final Grant Report
NTIS Accession No.
Institute of Environmental Medicine, New York University Medical Center, New York, New York
New York University, New York, New York
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division