What process, caused by a puncture of the left pleural cavity, may result in a collapsed right lung?

a. Pectus excavatum
b. Median sternotomy
c. Mediastinal shift
d. Segmental resection

ANS: C
A mediastinal shift occurs when the entrance of air or fluid enters the pleural cavity, causing the opposite lung to be compressed.

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Which of the following best describes a person's state of cerebral functioning?

A) Mental status B) Affect C) Level of consciousness D) Intelligence

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The most severe form of an allergic reaction is called:

a. vascular shock. b. anaphylaxis. c. an antigen response. d. rhinorrhea.

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