What situation indicates an impaired gas exchange for Charlie Raymond?

Shortness of breath is a clear indicator of impaired gas exchange, as it often signifies that the body's tissues are not receiving adequate oxygen or that carbon dioxide is not being effectively removed. When gas exchange is compromised, it can result from various underlying issues such as lung diseases, anemia, or problems with the cardiovascular system. Individuals experiencing shortness of breath may also exhibit increased respiratory effort or rapid breathing as their body attempts to compensate for inadequate oxygen levels. This physiological response highlights the body's need for effective gas exchange to maintain homeostasis and support vital functions.

The other options do not directly relate to gas exchange impairment. For example, physical inactivity might not necessarily indicate gas exchange issues, as some individuals may be inactive yet maintain normal respiratory function. Disturbed personal identity speaks to psychological aspects and does not have a direct connection to the physiological process of gas exchange. A normal breathing pattern suggests that the respiratory system is functioning properly, which would negate the possibility of impaired gas exchange.