types of ATELECTASIS
define atelectasis
inability of lungs to expands (infant) lung collapse (adult)
resorption atelectasis
due to obstruction
trapped oxygen gets resorbed
blood flow is unaffected
*mediastinum shifts toward collapsed lung
contraction atelectasis
fibrotic changes prevent full expansion
“heart failure’ cells
hemosiderin laden macrophages
seen in PULMONARY HTN
histological manifestation of ALI + ARDS
DAD
diffuse alveolar damage
what two barriers make up the alveolar capillary membrane
2. alveoli EPITHELIUM