1. While at work in a hospital you find an adult victim who has collapsed.  No one is available to help.  After you ensure that the scene is safe, what should you do next?

2. You work with an overweight 55-year-old dentist with no known history of heart disease.  He begins to complain of sudden, severe, "crushing" pain under his breastbone, in the center of his chest.  The pain has lasted more than 5 minutes.  What problem should you think of right away, and what should you do?

3. You witnessed the collapse of a 45-year-old man.  You are now performing CPR after sending someone to phone 911.  You have done your best to ensure that the first 2 links in the Chain of Survival have been completed immediately.  What is the third link in the chain, which will have the greatest effect on increasing this man's chance of survival?

4. You have been talking with a 60-year-old man.  He is alert and has been conversing normally.  All at once he complains of a sudden weakness on one side of his face and in one arm.  He is also having trouble speaking.  What is the most likely cause of his problem?

5. You remove a 3-year-old from the bottom of the shallow end of a swimming pool.  You find that she is limp and unresponsive.  No other person is available to help.  When should you phone 911?

6. You are a medical advisor helping set up a public access defibrillation (PAD) program at a local shopping mall.  The mall has purchased an AED.  The mall personnel director asks, "If AEDs are so 'foolproof,' why do the security guards have to learn CPR and be trained to use the AED?"  Which of the following is the best explanation for the need to train rescuers to perform CPR and use an AED?

7. You are responding to an emergency call for a child who was found unresponsive in her bed with no sign of trauma.  How should you open her airway?

8. Before providing rescue breathing for an unresponsive victim, you must check for breathing.  You do this by listening and feeling for airflow through the victim's nose or mouth and by:

9. Healthcare providers are cautioned to look for "adequate" breathing when they open the airway and check for breathing in an unresponsive victim.  What is the best explanation for the requirement that the healthcare provider look for more than just the presence or absence of breathing?

10. You are in the hospital cafeteria, where a woman appears to be in distress.  She is grasping her throat with both hands.  What should you do to find out if she is choking?

11. You are providing rescue breathing for a child using a bag-mask device.  What action will confirm that each of your rescue breaths is adequate?

12. A 3-year-old child is eating in the hospital playroom.  She suddenly begins coughing repeatedly.  Her cough then quickly becomes soft and weak.  She is making high-pitched noises while breathing in and seems to be in respiratory distress.  Her skin is a bluish color.  What is the most likely cause of her distress?

13. You are performing rescue breathing with a bag-mask device and oxygen for a nonbreathing child with signs of circulation.  How often should you provide rescue breaths for the child?

14. You are performing 2-rescuer CPR.  You are positioned at the victim's head.  When you initially open the unresponsive victim's airway and find that he is not breathing adequately, how many initial breaths should you give?

15. You are at your grandmother's house.  Your grandmother is unresponsive and has stopped breathing.  You are giving her mouth-to-mouth breathing.  Which of the following statements is the best explanation for the positive effects of rescue breaths?