MEDICAL GAS CERTIFICATION FINAL PAPER
2026 COMPLETE SOLVED QUESTIONS
GRADED A+
◉ Properly applied o2 therapy can decrease which of the following?
1. ventilatory demand
2. work of breathing
3. cardiac output
a. 2 and 3
b. 1 and 2
c. 1,2, and 3
d. 1 and 3. Answer: 1, 2, and 3
◉ Benefits of properly applied o2 therapy in patients with chronic
hypoxemia include all of the following except?
a. reversal of pulmonary vasoconstriction
b. relief of pulmonary hypertension
c. decreased right ventricular workload
d. improved pulmonary using capacity. Answer: improved pulmonary
using capacity
,◉ Which of the following would indicate a need for 02 therapy for an
adult or child?
1. SaO2 lessthan 90%
2. PaCO2 greater than 45 mm Hg
3. PaO2 less than 60 mm Hg
a. 2 and 3
b. 1 and 2
c. 1, 2, and 3
d. 1 and 3. Answer: 1 and 3
◉ You start a chronic obstructive pulmonary disease (COPD) patient on
a nasal o2 cannula at 2 L/min. What is the maximum time that should
pass before assessing this patient's PaO2 or SaO2?
a. 2 hours
b. 8 hours
c. 12 hours
d. 72 hours. Answer: 2 hours
◉ According to AARC clinical practice guidelines, what is the minimum
frequency for checking that functioning of an O2 delivery system?
, a. every 4 hours
b. every 8 hours
c. every 24 hours
d. every 48 hours. Answer: every 24 hours
◉ You set up an Oxy-Hood with an FIO2 of 0.5 for a newborn infant.
What is the maximum time that should pass before assessing this
patient's PaO2 or SaO2?
a. 1 hour
b. 2 hours
c. 8 hours
d. 12 hours. Answer: 1 hour
◉ When determining a need for O2 therapy, the respiratory therapist
should assess which of the following?
1. neurologic status
2. pulmonary status
3. cardiac status
a. 1 and 2
b. 2 and 3
2026 COMPLETE SOLVED QUESTIONS
GRADED A+
◉ Properly applied o2 therapy can decrease which of the following?
1. ventilatory demand
2. work of breathing
3. cardiac output
a. 2 and 3
b. 1 and 2
c. 1,2, and 3
d. 1 and 3. Answer: 1, 2, and 3
◉ Benefits of properly applied o2 therapy in patients with chronic
hypoxemia include all of the following except?
a. reversal of pulmonary vasoconstriction
b. relief of pulmonary hypertension
c. decreased right ventricular workload
d. improved pulmonary using capacity. Answer: improved pulmonary
using capacity
,◉ Which of the following would indicate a need for 02 therapy for an
adult or child?
1. SaO2 lessthan 90%
2. PaCO2 greater than 45 mm Hg
3. PaO2 less than 60 mm Hg
a. 2 and 3
b. 1 and 2
c. 1, 2, and 3
d. 1 and 3. Answer: 1 and 3
◉ You start a chronic obstructive pulmonary disease (COPD) patient on
a nasal o2 cannula at 2 L/min. What is the maximum time that should
pass before assessing this patient's PaO2 or SaO2?
a. 2 hours
b. 8 hours
c. 12 hours
d. 72 hours. Answer: 2 hours
◉ According to AARC clinical practice guidelines, what is the minimum
frequency for checking that functioning of an O2 delivery system?
, a. every 4 hours
b. every 8 hours
c. every 24 hours
d. every 48 hours. Answer: every 24 hours
◉ You set up an Oxy-Hood with an FIO2 of 0.5 for a newborn infant.
What is the maximum time that should pass before assessing this
patient's PaO2 or SaO2?
a. 1 hour
b. 2 hours
c. 8 hours
d. 12 hours. Answer: 1 hour
◉ When determining a need for O2 therapy, the respiratory therapist
should assess which of the following?
1. neurologic status
2. pulmonary status
3. cardiac status
a. 1 and 2
b. 2 and 3
