The EMT shows that he understands the difference between a pneumothorax and a tension pneumothorax when he makes what statement?
A) "A tension pneumothorax causes blood to accumulate around the lung; a pneumothorax involves the accumulation of only air around the lung."
B) "A tension pneumothorax causes cardiac output to decrease; a simple pneumothorax does not affect cardiac output."
C) "A pneumothorax describes a collapsed lung; a tension pneumothorax involves both a collapsed lung and blood loss."
D) "A pneumothorax is caused by a closed chest injury; a tension pneumothorax is caused by an open chest injury."
B
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