CTICasesNegative pressure pulmonary edema
Imaging findings
Chest radiograph and CT scan show acute bilateral central and perihilar airspace consolidation without pleural effusions and with a normal-sized heart, which resolved within 24 hours.
Key takeaways
Negative pressure pulmonary edema is caused by strong inspiratory efforts against an obstructed airway (typically due to laryngospasm post-extubation). The high negative intrathoracic pressure increases venous return and hydrostatic capillary pressure, driving fluid transudation.
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