When there is adequate oxygen present, the color of the flame is ____.

The proper compression-to-ventilation ratio for two-rescuer adult CPR when an oropharyngeal airway is in place is:

A) 5:1. B) 15:2. C) 30:2. D) asynchronous.

Contrast media are routinely introduced:

a. rectally b. topically c. sublingually d. intravenously