NBRC Mock TMC Exam Review With 47 Ques ons and
answers Newest RATED A+ 2025/2026 NEW!!
A pa ent 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 un l it is empty?
A. 47 min
B. 1.7 h
C. 2.2 h
D. 3.6 h - Correct Answers E cylinder = 0.28
1900x0.28/4 = 133/60 = 2.21
Answer: C. 2 hours, 21 minutes
A1er the Respiratory Therapist sets up a nonrebreathing mask on a pa ent at a flow rate of 10
L/min, the reservoir bag collapses before the pa ent 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 exhala on port.
C. Place the pa ent on con nuous posi ve airway pressure (CPAP)
D. Increase the flow rate to 15 L/min - Correct Answers D. Increase the flow rate to 15 L/min
A pa ent 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 Answers D. Nonrebreathing mask
The following blood gas levels have been obtained from a pa ent using a 60% aerosol mask.
pH: 7.47
PaCO2: 31 mmHg
PaO2: 58 mmHg
What should the RT recommend at this me?
A. Place the pa ent on CPAP
B. Increase the O2 to 70%
C. Intubate and place the pa ent on mechanical ven la on
D. Change to a nonrebreathing mask - Correct Answers A. Place the pa ent on CPAP
Given the following data, what is the pa ent'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
, B. 14 mL/dL
C. 16 mL/dL
D. 18 mL/dL - Correct Answers (Hb x 1.36 x SaO2) + (0.003 x PaO2)
(14 x 1.36 x 0.95) + (0.003 x 88)
18.088 + 0.264
= 18.352
Answer: D. 18 mL/dL
The respiratory therapist receives an order to set up a moderate level of O2 on a pa ent who
arrives in the ED breathing at a rate of 35 breaths/min. Which of the following O2 delivery
devices is most appropriate to use in this situa on?
A. Simple O2 mask at 10 L/min
B. Nasal cannula at 4 L/min
C. NRB Mask at 15 L/min
D. Air-entrainment mask at 40% O2 - Correct Answers D. Air-entrainment mask at 40% O2
A severe COPD pa ent arrives in the emergency department on a 2 L/min nasal cannula.
Arterial blood gas results follow:
pH: 7.32
PaCO2: 67 mmHg
PaO2: 62 mmHg
HCO3: 38 mEq/L
Which of the following is the most appropriate recommenda on?
answers Newest RATED A+ 2025/2026 NEW!!
A pa ent 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 un l it is empty?
A. 47 min
B. 1.7 h
C. 2.2 h
D. 3.6 h - Correct Answers E cylinder = 0.28
1900x0.28/4 = 133/60 = 2.21
Answer: C. 2 hours, 21 minutes
A1er the Respiratory Therapist sets up a nonrebreathing mask on a pa ent at a flow rate of 10
L/min, the reservoir bag collapses before the pa ent 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 exhala on port.
C. Place the pa ent on con nuous posi ve airway pressure (CPAP)
D. Increase the flow rate to 15 L/min - Correct Answers D. Increase the flow rate to 15 L/min
A pa ent 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 Answers D. Nonrebreathing mask
The following blood gas levels have been obtained from a pa ent using a 60% aerosol mask.
pH: 7.47
PaCO2: 31 mmHg
PaO2: 58 mmHg
What should the RT recommend at this me?
A. Place the pa ent on CPAP
B. Increase the O2 to 70%
C. Intubate and place the pa ent on mechanical ven la on
D. Change to a nonrebreathing mask - Correct Answers A. Place the pa ent on CPAP
Given the following data, what is the pa ent'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
, B. 14 mL/dL
C. 16 mL/dL
D. 18 mL/dL - Correct Answers (Hb x 1.36 x SaO2) + (0.003 x PaO2)
(14 x 1.36 x 0.95) + (0.003 x 88)
18.088 + 0.264
= 18.352
Answer: D. 18 mL/dL
The respiratory therapist receives an order to set up a moderate level of O2 on a pa ent who
arrives in the ED breathing at a rate of 35 breaths/min. Which of the following O2 delivery
devices is most appropriate to use in this situa on?
A. Simple O2 mask at 10 L/min
B. Nasal cannula at 4 L/min
C. NRB Mask at 15 L/min
D. Air-entrainment mask at 40% O2 - Correct Answers D. Air-entrainment mask at 40% O2
A severe COPD pa ent arrives in the emergency department on a 2 L/min nasal cannula.
Arterial blood gas results follow:
pH: 7.32
PaCO2: 67 mmHg
PaO2: 62 mmHg
HCO3: 38 mEq/L
Which of the following is the most appropriate recommenda on?
