Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Unexpanded alveoli cause decreased thoracic volume.
Collapsed alveoli causes the diffuse opacity in the chest during expiration. The relative fixation of the trachea at the thoracic inlet while the distal trachea moves up and down during inspiration and expiration causes tracheal buckling during expiration.
In older infants and children, a good inspiratory chest film is one in which the 6th anterior rib ends intersect the domes of the diaphragm. Because the volume of the thorax is decreased, one sees increased pulmonary opacity, pulmonary vasculature shadows become confluent and prominent, and heart and mediastinal contents increase in size and prominence. In children less than 5 years old, lateral buckling of the trachea at or just above the thoracic inlet is often seen during expiration. This tracheal buckling occurs to the side opposite the aortic arch, usually to the right.
See References Chapter.
Section Top | Title Page
Please send us comments by filling out our Comment Form.
All contents copyright © 1992-2014 Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. and the authors. All rights reserved.
"Virtual Pediatric Hospital", the Virtual Pediatric Hospital logo, and "A digital library of pediatric information" are all Trademarks of Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D.
Virtual Pediatric Hospital is funded in whole by Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. Advertising is not accepted.
Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.
The information contained in Virtual Pediatric Hospital is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.
This site complies with the HONcode standard for trustworthy health information: