The proper oxygen flow setting for a bag-mask device is:

A 66-year-old female patient was involved in a vehicle rollover. While evaluating her abdomen, which one of the following abdominal assessment parameters should you be least concerned about?

A) Rigidity B) Distention C) Guarding D) Bowel sounds

Attenuation is greater for elements with more ____ with which the photons may interact.

a. electrons b. protons c. neutrons d. positrons