Pneumothorax pathophysiology: Difference between revisions

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==Pathophysiology==
==Pathophysiology==
The [[lungs]] are located inside the chest cavity, which is a hollow space.  Air is drawn into the lungs by the [[diaphragm (anatomy)|diaphragm]] (a powerful [[abdomen|abdominal]] [[muscle]]). The [[pleural cavity]] is the region between the chest wall and the lungs. If air enters the pleural cavity, either from the outside (open pneumothorax) or from the lung (closed pneumothorax), the lung collapses and it becomes mechanically impossible for the injured person to breathe, even with an open [[airway]].  If a piece of tissue forms a one-way valve that allows air to enter the pleural cavity from the lung but not to escape, overpressure can build up with every breath; this is known as [[tension pneumothorax]]. It may lead to severe shortness of breath as well as circulatory collapse, both life-threatening conditions. This condition requires urgent intervention.


==References==
==References==

Revision as of 20:44, 31 January 2018