compressive atelectasis

compressive atelectasis

[kəmpres′iv]
a condition in which a region of the lung cannot be ventilated as a result of intrathoracic pressures that compress the alveoli in that region. The condition may result from a pulmonary embolism, which releases chemicals that cause vasoconstriction and bronchospasm, leading to alveolar compression.
References in periodicals archive ?
5 cm thin-walled hypodense mass with calcium deposition in the dependent region (Figure 2) associated with a pleural effusion and compressive atelectasis.
Respiratory failure in inhalational anthrax is caused mainly by massive bilateral pleural effusions and compressive atelectasis and was the major cause of death in 39% (16 of 41) of the cases in Sverdlovsk, Russia.
Compressive atelectasis develops with any space-occupying lesion such as pneumothorax, hemothorax, pleural effusion, or abdominal distention.
Computed tomography (CT) of the chest revealed a large unilateral pleural effusion, compressive atelectasis, and no evidence of consolidation.