Which of the following gases may be used as a refrigerant?
a. Oxygen c. Carbon dioxide
b. Nitric oxide d. Carbon monoxide
ANS: C
Solid carbon dioxide is used to refrigerate perishable materials during transport (e.g., food and laboratory specimens). Liquid carbon dioxide can be used as an expendable refrigerant and is used extensively as a fire-extinguishing agent in portable and stationary fire-extinguishing sys-tems.
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Also known as a simple fracture, a(n) ________ fracture does NOT involve a break in the skin. This type of fracture is completely internal
a. closed b. open c. comminuted d. transverse
An EMT has an understanding of the different types of pathogens when she states:
A) "Bacteria tend to be larger than viruses and can be seen without a microscope." B) "Protozoa are considered parasitic worms and can live within the human body." C) "Fungal infections typically attack the immune systems of healthy persons." D) "Viruses are resistant to antibiotics because they live within the body's cells."
Military time is frequently used in health care to avoid the confusion created by the AM and PM used in the traditional system
Indicate whether the statement is true or false
During the transport phase of an ambulance call, it is MOST important to:
A. reassess the patient only if he or she deteriorates. B. reassess unstable patients at least every 15 minutes. C. converse with the patient and provide reassurance. D. complete the run form before arrival at the hospital.