NBRC Mock TMC Exam 2026 Questions
and Answers
A patient is receiving O2 from an E cylinder at 4 L/min through a nasal cannula.
The cylinder pressure is 1900 psig. How long will the cylinder run until it is
empty?
A. 47 min
B. 1.7 h
C. 2.2 h
D. 3.6 h - Correct answer-E cylinder = 0.28
1900x0.28/4 = 133/60 = 2.21
Answer: C. 2 hours, 21 minutes
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,After the Respiratory Therapist sets up a nonrebreathing mask on a patient at a
flow rate of 10 L/min, the reservoir bag collapses before the patient finishes
inspiring. The RT should do which of the following?
A. Change to a simple mask at a flow rate of 10 L/min
B. Remove the one-way valve from the exhalation port.
C. Place the patient on continuous positive airway pressure (CPAP)
D. Increase the flow rate to 15 L/min - Correct answer-D. Increase the flow rate to
15 L/min
A patient with carbon monoxide (CO) poisoning can best be treated with which of
the following therapies?
A. Nasal Cannula at 6 L/min
B. Simple O2 mask at 10 L/min
C. CPAP and 60% O2
D. Nonrebreathing mask - Correct answer-D. Nonrebreathing mask
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, The following blood gas levels have been obtained from a patient using a 60%
aerosol mask.
pH: 7.47
PaCO2: 31 mmHg
PaO2: 58 mmHg
What should the RT recommend at this time?
A. Place the patient on CPAP
B. Increase the O2 to 70%
C. Intubate and place the patient on mechanical ventilation
D. Change to a nonrebreathing mask - Correct answer-A. Place the patient on
CPAP
Given the following data, what is the patient's total arterial O2 content?
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and Answers
A patient is receiving O2 from an E cylinder at 4 L/min through a nasal cannula.
The cylinder pressure is 1900 psig. How long will the cylinder run until it is
empty?
A. 47 min
B. 1.7 h
C. 2.2 h
D. 3.6 h - Correct answer-E cylinder = 0.28
1900x0.28/4 = 133/60 = 2.21
Answer: C. 2 hours, 21 minutes
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,After the Respiratory Therapist sets up a nonrebreathing mask on a patient at a
flow rate of 10 L/min, the reservoir bag collapses before the patient finishes
inspiring. The RT should do which of the following?
A. Change to a simple mask at a flow rate of 10 L/min
B. Remove the one-way valve from the exhalation port.
C. Place the patient on continuous positive airway pressure (CPAP)
D. Increase the flow rate to 15 L/min - Correct answer-D. Increase the flow rate to
15 L/min
A patient with carbon monoxide (CO) poisoning can best be treated with which of
the following therapies?
A. Nasal Cannula at 6 L/min
B. Simple O2 mask at 10 L/min
C. CPAP and 60% O2
D. Nonrebreathing mask - Correct answer-D. Nonrebreathing mask
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, The following blood gas levels have been obtained from a patient using a 60%
aerosol mask.
pH: 7.47
PaCO2: 31 mmHg
PaO2: 58 mmHg
What should the RT recommend at this time?
A. Place the patient on CPAP
B. Increase the O2 to 70%
C. Intubate and place the patient on mechanical ventilation
D. Change to a nonrebreathing mask - Correct answer-A. Place the patient on
CPAP
Given the following data, what is the patient's total arterial O2 content?
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
