Tension pneumothorax may also occur in someone who is receiving mechanical ventilation, in which case it may be difficult to spot as the person is typically receiving sedation; it is often noted because of a sudden deterioration in condition.
12.
If there is a valve mechanism which allows air to enter the skull but prevents it from escaping, a "'tension pneumocephalus "'can occur ( similar to what can happen in a tension pneumothorax ).
13.
A tension pneumothorax is a particularly severe form of this condition where the air in the pleural cavity cannot escape, so the pneumothorax keeps getting bigger until it compresses the heart and blood vessels, leading to a life-threatening situation.
