________ is a special category of drug. It is used successfully to calm patients who suffer from bipolar disorder (depression alternating with manic excitement)

Which of the following are hazards of non-invasive positive pressure ventilation?

I. eye irritation II. barotrauma III. aspiration pneumonia IV. hypoxemia A) I B) I and II C) I, II, and III D) I, II, III, and IV

A (n) ________ is a jarring injury to the brain and is the most common type of head injury. 

Fill in the blank(s) with the appropriate word(s).