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NBRC / TMC / RRT Exam 2025 Prep Test Bank with
300 most recently Tested Questions and Correct
Answers/ Respiratory Therapist Certification Exam
Test Bank Latest
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 - ...ANSWER...✓✓ E cylinder = 0.28
1900x0.28/4 = 133/60 = 2.21
Answer: C. 2 hours, 21 minutes
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?
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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 - ...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 - ...ANSWER...✓✓ D.
Nonrebreathing mask
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
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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 - ...ANSWER...✓✓ A.
Place the patient on CPAP
Given the following data, what is the patient's total
arterial O2 content?
pH: 7.41
PaCO2: 37 mmHg
PaO2: 88 mmHg
HCO3: 26 mEq/L
SaO2: 95%
Hb: 14 g/dL
A. 12 mL/dL
NBRC / TMC / RRT Exam 2025 Prep Test Bank with
300 most recently Tested Questions and Correct
Answers/ Respiratory Therapist Certification Exam
Test Bank Latest
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 - ...ANSWER...✓✓ E cylinder = 0.28
1900x0.28/4 = 133/60 = 2.21
Answer: C. 2 hours, 21 minutes
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?
,2|Page
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 - ...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 - ...ANSWER...✓✓ D.
Nonrebreathing mask
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
, 3|Page
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 - ...ANSWER...✓✓ A.
Place the patient on CPAP
Given the following data, what is the patient's total
arterial O2 content?
pH: 7.41
PaCO2: 37 mmHg
PaO2: 88 mmHg
HCO3: 26 mEq/L
SaO2: 95%
Hb: 14 g/dL
A. 12 mL/dL
