NBRC Mock TMC Exam Review
(Verified Answers)
1. 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 rununtil
it is empty?
A. 47 min
B. 1.7 h
C. 2.2 h
D. 3.6 h: E cylinder = 0.28
1900x0.28/4 = 133/60 =
2.21
Answer : C. 2 hours, 21 minutes
2. After the RespiratoryTherapist sets up a nonrebreathing mask on a patientat 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: D. Increase the flow rate to 15 L/min
3. A patient with carbon monoxide (CO) poisoning can best be treated withwhich
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: D. Nonrebreathing mask
4. The following blood gas levels have been obtained from a patient using a60%
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%
(Verified Answers)
1. 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 rununtil
it is empty?
A. 47 min
B. 1.7 h
C. 2.2 h
D. 3.6 h: E cylinder = 0.28
1900x0.28/4 = 133/60 =
2.21
Answer : C. 2 hours, 21 minutes
2. After the RespiratoryTherapist sets up a nonrebreathing mask on a patientat 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: D. Increase the flow rate to 15 L/min
3. A patient with carbon monoxide (CO) poisoning can best be treated withwhich
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: D. Nonrebreathing mask
4. The following blood gas levels have been obtained from a patient using a60%
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%
