A student asks why carbon monoxide causes tissue damage. What response by the professor is best?
a. Competes with carbon dioxide so that it cannot be excreted
b. Binds to hemoglobin so that it cannot carry oxygen
c. Destroys the chemical bonds of hemoglobin so it cannot carry oxygen
d. Removes iron from hemoglobin so it cannot carry oxygen
Answer: b. Binds to hemoglobin so that it cannot carry oxygen
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A young woman is contacted by a public health nurse and informed that one of her sexual contacts has tested positive for HIV
The young woman comes into the clinic to be tested. She tells the nurse that she has heard that people who are infected with HIV have a period when they test negative even though they are very infectious. What is this period called? A) Infectious stage B) Primary infection C) Viral set point D) Window stage
The nurse is providing care of a client who ignores the urge to defecate when at work. The client states, "I don't like to have a bowel movement anywhere but at home." Which response by the nurse is the most appropriate?
A) "This is a common practice, and it will strengthen the reflex later." B) "You will get the urge later, so you should not worry about it." C) "If you continue to ignore the urge to defecate, it can lead to problems." D) "It is better to suppress the urge than to suffer embarrassment at work."
The nurse is preparing to examine a patient's eyes using an ophthalmoscope. Which technique should the nurse follow when using this equipment?
A) The nurse should remove eyeglasses or contacts before using the opthalmoscope. B) The nurse should place the ophthalmoscope in the right hand and look through the right eye. C) The nurse should place the ophthalmoscope in the left hand and look through the right eye. D) The nurse should close the eye that is not looking through the ophthalmoscope during the examination.
The nurse is observing a play group of children of all ages. Which activity would the toddlers in the group most likely be doing?
A) Pretending to be mommies and daddies in the play house B) Playing with the plastic vacuum cleaner pushing it around the room C) Painting pictures in the art corner of the room D) Watching a movie with other children their age