By the end of pregnancy, the pregnant patient's heart rate increases up to 20%, or about __________ beats more per minute.

You receive a call for a 49-year-old woman who passed out. The patient's husband tells you that they were watching TV when the incident occurred. No trauma was involved. The patient is semiconscious and has cyanosis to her lips. After opening her airway with the head tilt-chin lift maneuver, you should:

A) assess her respiratory effort. B) begin ventilation assistance. C) insert an oropharyngeal airway. D) insert a nasopharyngeal airway.

Which two of the following are considered vapors? 1. Carbon dioxide 2. Nitrogen 3. Oxygen 4. Water

a. 1 and 3 c. 2 and 3 b. 1 and 4 d. 2 and 4