During CPR, a Properly Positioned Endotracheal Tube Can Do Which

During CPR, a properly positioned endotracheal tube can do which of the following?
I. Isolate and protect the lower airway from aspiration.
II. Permit suctioning of the trachea and mainstem bronchi.
III. Facilitate positive-pressure ventilation and oxygenation.
IV. Provide a route for administration of selected drug agents.

A) I, II, and III
B) III and IV
C) I, II, III, and IV
D) I and IV

Correct Answer:

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