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NBRC MOCK TMC EXAM 2024/2025 WITH 100% ACCURATE ANSWERS

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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 - Precise Answer E cylinder = 0.28 1900x0.28/4 = 133/60 = 2.21 Answer: C. 2 hours, ...

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  • August 11, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NBRC
  • NBRC
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YANCHY
NBRC MOCK TMC EXAM 2024/2025
WITH 100% ACCURATE 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 - Precise 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?



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 - Precise 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 - Precise 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



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 - Precise 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

B. 14 mL/dL

C. 16 mL/dL

D. 18 mL/dL - Precise Answer ✔✔(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 patient 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 situation?



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 - Precise Answer ✔✔D. Air-entrainment mask at 40% O2



A severe COPD patient 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 recommendation?



A. Increase the liter flow to 4 L/min

B. Maintain the current O2 level

C. Institute noninvasive positive pressure ventilation (NPPV)

D. Place on a NRB mask at 12 L/min - Precise Answer ✔✔B. Maintain the current O2 level

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