A simple pneumothorax:

A. is caused by penetrating chest trauma.
B. heals on its own without any treatment.
C. is commonly caused by blunt chest trauma.
D. often has a nontraumatic cause.

Ans: C. is commonly caused by blunt chest trauma.

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Acute glomerulonephritis would be categorized as:

A) prerenal oliguria. B) polyuria. C) renal oliguria. D) postrenal oliguria.

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