The total charge on an ionic compound is:
A. positive
B. negative
C. 0
D. none of the above
Answer: C
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The positive predictive value of a test is 92%. What does this tell us?
A) The condition is actually present in 92 out of every 100 people who test positive. B) The condition is present in 92 out of every 100 people with similar demographic and clinical characteristics. C) The test will give a negative result in 92 out of every 100 patients who do not have the condition. D) The test will provide a correct result 92 of every 100 times.
A patient was trapped in a burning apartment before being rescued by firefighters. As you approach him, you note that his legs and arms are burned. He is screaming in pain and coughing, but no longer actively burning. Given this information, what intervention would you perform first?
A) Perform a secondary assessment to determine if non-burn injuries are present. B) Estimate the percentage of the patient's body that has been burned. C) Determine if the patient has suffered partial- or deep partial-thickness burns. D) Decide whether to administer oxygen with a nonrebreather face mask or with a bag-valve mask.
A patient has a history of tendonitis to the right elbow. Based on this history, the EMT would understand that the:
A) Patient suffered a previous fracture to the right elbow B) Tissue connecting the muscle to the bones of the elbow is inflamed C) Muscles surrounding the elbow are inflamed D) Bones making up the elbow joint are infected
What is the simplest way to increase the humidity output of a humidifier?
a. Increase the time that the gas and the wa-ter are in contact. b. Increase the surface area between the wa-ter and the gas. c. Decrease the water vapor pressure of the gas. d. Increase the temperature of either the wa-ter or the gas.