Why is too much iron dangerous?
a. Transferrin, which carries iron, causes cellular swelling and lysis.
b. The oxygen carried by excess iron oxidizes neurologic cells.
c. Iron's breakdown products cause excretion of vitamins C and E.
d. Free radicals and superoxide formed from ferrous iron plus oxygen damage cell membranes.
ANS: D
When iron exceeds storage capacity, ferrous iron accumulates in cells. Ferrous iron is easily oxidized and in so doing generates superoxide and other free radicals, which are very damaging to cell membranes, mitochondria, and other cell organelles. Cell death and eventual possible organ failure are consequences.
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The medication administration records (MARS) are run by pharmacy technicians in the:
A)Hospital pharmacy B)Retail pharmacy C)Home health pharmacy
The radiographer's attitude toward his or her own technical ability will also be conveyed to the patient
Indicate whether the statement is true or false
Which of the following is TRUE regarding the aging of the cardiovascular system?
a. decrease in peripheral vascular resistance b decrease in the instance of CHF c. increase in cardiac output d. increase in the amount of atherosclerosis
You are a new EMT in a very busy urban EMS system. Before joining this agency, you worked as a volunteer in a rural EMS system, where you did not experience many EMS calls. You are working with a seasoned EMT when you are requested to respond to a residential home for an unresponsive 13-year-old male patient. Upon your arrival, the family escorts you into the garage, where the boy is being cradled by his crying mother. The boy is unresponsive. As you draw nearer to the boy, your partner says to you, "Hey, you smell that moth ball smell? I know what might be going on." Given your partner's statement, how might the odor be related to the patient's condition?
A) Chloral hydrate overdose B) Camphor overdose C) Organophosphate overdose D) Acetone overdose