Therapeutics Exam- Medical Gas therapy questions with
verified answers
A 27-year-old woman received from the emergency department is on a nasal
cannula at 5 L/min. Approximately what FIO2 is this patient receiving? Ans✓✓✓
40%
A 45-year-old patient with congestive heart failure is receiving O2 through a 35%
air-entrainment mask. With an O2 input of 6 L/min, what is the total output gas
flow? Ans✓✓✓ 36 l/min
A patient is receiving O2 through a nonrebreathing mask set at 8 L/min. You
notice that the mask's reservoir bag collapses completely before the end of each
inspiration. Which of the following actions is appropriate in this case? Ans✓✓✓
Increase the liter flow.
A patient with chronic hypercapnia placed on an FIO2 of 0.6 starts
hypoventilating. What is a possible cause of this phenomenon? Ans✓✓✓ O2-
induced hypoventilation
A physician orders 2 L/min O2 through a simple mask to a 33-year-old
postoperative woman with moderate hypoxemia breathing room air (PaO2 = 52
mm Hg). What would be the correct action at this time? Ans✓✓✓ Recommend a
flow of at least 5 L/min to wash out carbon dioxide (CO2).
A physician orders supplemental O2 for a patient through a nasal cannula at a
flow of 12 L/min. When you ask what the goal is, the physician states that the
patient should receive about 60% O2. Which of the following should you
recommend? Ans✓✓✓ The O2 should be given through a simple mask set at 5 to
12 L/min.
, A true high-flow O2 delivery system should provide at least what flow? Ans✓✓✓
60l/min
According to AARC clinical practice guidelines, what is the minimum frequency for
checking the functioning of an O2 delivery system? Ans✓✓✓ every 24 hours
All of the following conditions can be treated with hyperbaric oxygen (HBO)
therapy except: Ans✓✓✓ septic shock
An O2 delivery device takes separate pressurized air and O2 sources as input,
then mixes these gases through a precision valve. What does this describe?
Ans✓✓✓ O2 blending system
Delivery systems that provide only a portion of a patient's inspired gas are
referred to as what? Ans✓✓✓ variable-performance systems
Low-flow O2 delivery systems used in respiratory care include all of the following
except: Ans✓✓✓ air-entrainment mask
nasal cannula Ans✓✓✓ 24-44%
Non-rebreather Ans✓✓✓ 60-80%
Partial non-rebreather Ans✓✓✓ 35-60%
verified answers
A 27-year-old woman received from the emergency department is on a nasal
cannula at 5 L/min. Approximately what FIO2 is this patient receiving? Ans✓✓✓
40%
A 45-year-old patient with congestive heart failure is receiving O2 through a 35%
air-entrainment mask. With an O2 input of 6 L/min, what is the total output gas
flow? Ans✓✓✓ 36 l/min
A patient is receiving O2 through a nonrebreathing mask set at 8 L/min. You
notice that the mask's reservoir bag collapses completely before the end of each
inspiration. Which of the following actions is appropriate in this case? Ans✓✓✓
Increase the liter flow.
A patient with chronic hypercapnia placed on an FIO2 of 0.6 starts
hypoventilating. What is a possible cause of this phenomenon? Ans✓✓✓ O2-
induced hypoventilation
A physician orders 2 L/min O2 through a simple mask to a 33-year-old
postoperative woman with moderate hypoxemia breathing room air (PaO2 = 52
mm Hg). What would be the correct action at this time? Ans✓✓✓ Recommend a
flow of at least 5 L/min to wash out carbon dioxide (CO2).
A physician orders supplemental O2 for a patient through a nasal cannula at a
flow of 12 L/min. When you ask what the goal is, the physician states that the
patient should receive about 60% O2. Which of the following should you
recommend? Ans✓✓✓ The O2 should be given through a simple mask set at 5 to
12 L/min.
, A true high-flow O2 delivery system should provide at least what flow? Ans✓✓✓
60l/min
According to AARC clinical practice guidelines, what is the minimum frequency for
checking the functioning of an O2 delivery system? Ans✓✓✓ every 24 hours
All of the following conditions can be treated with hyperbaric oxygen (HBO)
therapy except: Ans✓✓✓ septic shock
An O2 delivery device takes separate pressurized air and O2 sources as input,
then mixes these gases through a precision valve. What does this describe?
Ans✓✓✓ O2 blending system
Delivery systems that provide only a portion of a patient's inspired gas are
referred to as what? Ans✓✓✓ variable-performance systems
Low-flow O2 delivery systems used in respiratory care include all of the following
except: Ans✓✓✓ air-entrainment mask
nasal cannula Ans✓✓✓ 24-44%
Non-rebreather Ans✓✓✓ 60-80%
Partial non-rebreather Ans✓✓✓ 35-60%
