open pneumothorax


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Related to open pneumothorax: Tension pneumothorax, closed pneumothorax

o·pen pneu·mo·thor·ax

a free communication between the atmosphere and the pleural space either through the lung or through the chest wall.
Synonym(s): sucking chest wound

open pneumothorax

Etymology: AS, open + Gk, pneuma, air, thorax, chest
the presence of air or gas in the chest as a result of an open wound in the chest wall.

o·pen pneu·mo·tho·rax

(ō'pĕn nū'mō-thōr'aks)
A free communication between the atmosphere and the pleural space either through the lung or through the chest wall.
Synonym(s): sucking chest wound, sucking wound.

pneumothorax

entry of air into the pleural cavity in sufficient quantity to cause collapse of the lung and consequent respiratory embarrassment. If it is unilateral there is a mediastinal shift with displacement of the heart to the other side of the chest. Breath sounds are absent from the affected side.
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Pneumothorax. By permission from Ettinger SJ, Feldman E, Textbook of Veterinary Internal Medicine, Saunders, 2004

closed pneumothorax
air leaks from a discontinuity in the lung into the pleural cavity.
false pneumothorax
artifactual increased radiolucency of the thorax resembling free air in the pleural cavity.
iatrogenic pneumothorax
may occur following intrathoracic surgery or in association with procedures which involve entry into the pleural cavity, such as thoracentesis or placement of a chest drain.
open pneumothorax
caused by an open wound in the chest wall.
spontaneous pneumothorax
due to an unknown cause.
tension pneumothorax
a particularly dangerous form of pneumothorax that occurs when air escapes into the pleural cavity from a bronchus but cannot regain entry into the bronchus. As a result, continuously increasing air pressure in the pleural cavity causes progressive collapse of the lung tissue. If not relieved, it can lead to lung collapse and mediastinal shift.