Travel Reference
In-Depth Information
ers may suffer exacerbations due to the dry, cold air. In general, asthmatics are not known
to have an increased risk for altitude illness, but they may be more susceptible to HAPE
during an exacerbation.
Pneumothorax
Occasionally lung tissue may rupture spontaneously, allowing air to leak into the chest
cavity. Lacerations of the lung can also occur with penetrating injuries or with nonpenet-
rating injuries that fracture and displace ribs. The lung on the side of the air leak retracts
due to its inherent elasticity and does not expand well during inspiration. As a result, pul-
monary function is compromised. This condition is known as pneumothorax, meaning “air
in the chest.”
Figure 18-2. Pulmonary function with a tension pneumothorax
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