What would the partial pressure of oxygen equal in an air mixture at a depth of 99 feet under water?
a. 159 x 2 or 318 mm Hg c. 159 mm Hg
b. 159 x 4 or 636 mm Hg d. 159 x 3 or 477 mm Hg
d. 159 x 3 or 477 mm Hg
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You pull up to the scene of a single-car motor vehicle collision. Emergency Medical Responders (EMRs) are maintaining inline manual cervical spine motion restriction of the 56-year-old driver, who was unrestrained when she struck a tree at a high rate of speed. As you approach the vehicle, you note that the patient appears unresponsive, with blood coming from her nose and ears. Which instruction to the EMRs is most appropriate?
A) "Let me conduct the primary assessment and place a cervical collar on the patient, and then we can start to get her out of this car." B) "Let me conduct the primary assessment, and then we can place a vest-type extrication device on the patient to get her outside the vehicle." C) "After I do the primary and secondary assessment, we will need to get the patient onto the stretcher for immediate transport." D) "Let's suction the airway and get the patient out of the car fast; we can put on a cervical collar once we are outside the vehicle."
Advancing hoselines using a standpipe system involves ____ different hoseline evolutions.
A. one B. two C. three D. four
The expression (8 - 2) + 3 =
A. 3 B. 9 C. 6 D. 2
Resolution with intensifying screens will increase as ____ increases.
a. phosphor size b. phosphor layer thickness c. phosphor concentration d. all of the above