NBRC Mock TMC Exam Review With Complete Solutions/updated
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Course
NBRCTMC
Institution
NBRCTMC
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 minut...
NBRC Mock TMC Exam Review With Complete
Solutions/updated
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?
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
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?
A. 12 mL/dL
B. 14 mL/dL
C. 16 mL/dL
D. 18 mL/dL - 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 - 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:
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 - ANSWER-B. Maintain the current O2 level
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