27) What is the percentage of oxygen provided by connecting a high flow of oxygen to the
oxygen inlet found on a pocket mask?
A) 50%
B) 21%
C) 100%
D) 16%
Objective: 10.16
28) Your patient is a 55-year-old man with a history of chronic bronchitis. You have been called
to his home today because of an increase in his level of respiratory distress. The patient is on 2
liters per minute of oxygen by nasal cannula at home. Your assessment reveals difficulty
speaking due to shortness of breath, leaning forward to breathe, a productive cough, and a
respiratory rate of 32 per minute. Which of the following is true concerning the best course of
action for this patient?
A) Because increased blood levels of carbon dioxide are the primary stimulus to breathe, you
should encourage the patient to rebreathe his exhaled air from a paper bag.
B) You should increase the patient‘s oxygen flow rate to deliver adequate amounts of oxygen to
his tissues. If his respiratory rate decreases, you can assist him with a bag-valve-mask device.
C) You should increase the patient‘s oxygen flow rate until his respiratory rate decreases and then
resume oxygen administration at 2 liters per minute.
D) You should not increase the patient’s oxygen flow rate because of his likely dependence on a
hypoxic drive to stimulate breathing.
Objective: 10.16
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