CTICasesNegative Pressure Pulmonary Edema
Imaging findings
Chest radiographs demonstrate acute, diffuse, bilateral alveolar consolidation, which progressed rapidly following an episode of near-hanging. Defibrillator and cervical collar are also visible.
Key takeaways
Negative pressure pulmonary edema (NPPE) is caused by severe upper airway obstruction (such as hanging or laryngospasm). The massive inspiratory effort against a closed airway generates high negative intrathoracic pressure, drawing fluid into the alveoli.
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