NBRC Mock TMC Exam Review With
Complete solution Latest 2024/25
A patient is receiving O2 from an E cylinder at 4 L/min through a nasal cannula. The
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cylinder pressure is 1900 psig. How long will the cylinder run until it is empty?
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A. 47 min II II
B. 1.7 h II II
C. 2.2 h II II
D. 3.6 h - E cylinder = 0.28
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1900x0.28/4 = 133/60 = 2.21 II II II II II
Answer: C. 2 hours, 21 minutes II II II II II
After the Respiratory Therapist sets up a nonrebreathing mask on a patient at a flow rate
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of 10 L/min, the reservoir bag collapses before the patient finishes inspiring. The RT
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should do which of the following?
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A. Change to a simple mask at a flow rate of 10 L/min
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B. Remove the one-way valve from the exhalation port.
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C. Place the patient on continuous positive airway pressure (CPAP)
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D. Increase the flow rate to 15 L/min - D. Increase the flow rate to 15 L/min
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A patient with carbon monoxide (CO) poisoning can best be treated with which of the
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following therapies?
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A. Nasal Cannula at 6 L/min
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B. Simple O2 mask at 10 L/min
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C. CPAP and 60% O2
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D. Nonrebreathing mask - D. Nonrebreathing mask
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The following blood gas levels have been obtained from a patient using a 60% aerosol
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mask.
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pH: 7.47 II
PaCO2: 31 mmHg II II
PaO2: 58 mmHg II II
What should the RT recommend at this time?
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A. Place the patient on CPAP
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B. Increase the O2 to 70%
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C. Intubate and place the patient on mechanical ventilation
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, D. Change to a nonrebreathing mask - A. Place the patient on CPAP
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II Given the following data, what is the patient's total arterial O2 content?
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pH: 7.41 II
PaCO2: 37 mmHg II II
PaO2: 88 mmHg II II
HCO3: 26 mEq/L II II
SaO2: 95% II
Hb: 14 g/dL II II
A. 12 mL/dLII II
B. 14 mL/dLII II
C. 16 mL/dL II II
D. 18 mL/dL - (Hb x 1.36 x SaO2) + (0.003 x PaO2)
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(14 x 1.36 x 0.95) + (0.003 x 88)
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18.088 + 0.264 II II
= 18.352
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Answer: D. 18 mL/dL II II II
The respiratory therapist receives an order to set up a moderate level of O2 on a patient
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who arrives in the ED breathing at a rate of 35 breaths/min. Which of the following O2
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delivery devices is most appropriate to use in this situation?
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A. Simple O2 mask at 10 L/min
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B. Nasal cannula at 4 L/min
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C. NRB Mask at 15 L/min
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D. Air-entrainment mask at 40% O2 - D. Air-entrainment mask at 40% O2
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A severe COPD patient arrives in the emergency department on a 2 L/min nasal cannula.
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Arterial blood gas results follow:
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pH: 7.32 II
PaCO2: 67 mmHg II II
PaO2: 62 mmHg II II
HCO3: 38 mEq/L II II
Which of the following is the most appropriate recommendation?
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A. Increase the liter flow to 4 L/min
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B. Maintain the current O2 level
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C. Institute noninvasive positive pressure ventilation (NPPV)
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D. Place on a NRB mask at 12 L/min - B. Maintain the current O2 level
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