Woodring J H, Baker M D, Stark P
Department of Diagnostic Radiology, University of Kentucky Medical Center, Lexington 40536-0084, USA.
Chest. 1996 Oct;110(4):1102-5. doi: 10.1378/chest.110.4.1102.
Pneumothorax ex vacuo is a little-known complication of lobar collapse. In this condition, acute bronchial obstruction from mucous plugs, aspirated foreign bodies, or malpositioned endotracheal tubes causes acute lobar collapse and a marked increase in negative intrapleural pressure around the collapsed lobe. As a result, gas is drawn into the pleural space around the collapsed lobe while the seal between the visceral and parietal pleura of the adjacent lobe or lobes remains intact. The pneumothorax spontaneously resolves when the bronchial obstruction is relieved and the lobe reexpands. Recognition of pneumothorax ex vacuo is crucial in directing treatment to relieve the bronchial obstruction rather than inserting a chest tube into the pleural space.
肺萎陷性气胸是一种鲜为人知的肺叶萎陷并发症。在此情况下，黏液栓、误吸异物或气管内导管位置不当导致的急性支气管阻塞会引起急性肺叶萎陷，并使萎陷肺叶周围的胸腔内负压显著增加。结果，气体被吸入萎陷肺叶周围的胸膜腔，而相邻肺叶的脏层和壁层胸膜之间的密封保持完整。当支气管阻塞解除且肺叶复张时，气胸会自行消退。认识到肺萎陷性气胸对于指导治疗以解除支气管阻塞而非在胸膜腔插入胸管至关重要。
