You have been summoned to a grocery store for a 6-year-old girl who has collapsed. On scene, you find the girl lying unresponsive on the floor. You quickly open the patient's airway and determine that she is not breathing. When you try to ventilate her with the bag-valve mask, you are unable to do so. Repositioning the head and reattempting ventilation is not successful in passing air into the lungs. What would your next action be?

What functions do the carbohydrate portions of molecules perform?

A) Cell lubricant and adhesive B) Form part of a recognition system to keep the body's immune system from attacking the body's own cells and tissues C) Receptor site for extracellular compounds D) All of the above

You arrive at the scene of a fall, where a 42-year-old woman fell backward off a step ladder while cleaning windows in her kitchen. She is lying on the floor complaining of pain to her ankle. She tells you, "If I had just gone to work today instead of using vacation time, this never would have happened!" Based on information thus far, which one of the following can you conclude?

A) She does not have any other injuries. B) She does not require rapid transport. C) Her pulse rate is within normal limits. D) She is alert with an open airway.