After jogging with your friend for about 30 minutes, she stops and asks why your heart rate increases and your heart feels like it is pumping harder after you exercise for a while. Based on your understanding of the cardiovascular system, your best response would be which of the following statements?
a. "You're out of shape. Those things wouldn't happen if you exercised more."
b. "Exercise makes your body need more nutrients and oxygen; your heart pumps harder and faster to deliver more blood containing those things to your muscles."
c. "When you exercise, your blood pressure increases, so your heart has to work harder to overcome the higher blood pressure."
d. "Exercise pushes more blood into your heart, so your heart has to work harder and faster to pump the blood out so you don't go into heart failure."
Answer: b
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A fellow EMT is talking with the Medical Director at a staff meeting. The EMT states that the neighboring ambulance service is carrying special clotting bandages for serious bleeding wounds. The special bandages cost five times as much as the regular bandages, but the EMT claims they work ten times better. The EMT wants the Medical Director to approve the bandages for use in their ambulances. The
Medical Director responds to the EMT by saying he will not approve the bandages until he can prove they are worth the additional cost. How can the EMT best prove the worth of the special bandages? A) Call the manufacturer of the special bandage and request literature to give to the Medical Director. B) Have a member of the other ambulance service call the Medical Director to provide firsthand information on how the special bandages are much better. C) Perform a literature search to see what studies have been done on the special bandages and report the findings to the Medical Director. D) Order a small number of the special bandages and compare them side-by-side to the regular bandages.
The EMS network begins:
A) by educating dispatchers. B) with citizen involvement. C) when an injury has occurred. D) when paramedics are notified