NBRC / TMC / RRT Exam 2025
NBRC / TMC / RRT Exam 4 2025 Prep Test Bank
with 350 VERIFIED QUESTIONS WITH
CORRECT DETAILED ANSWERS &
RATIONALES | ATI RN COMPREHENSIVE
PREDICTOR WITH NGN LATEST VERSION
Mechanical ventilation was initiated for a patient, after which the PaCO2
decreased from 53 to 40 mm Hg. A respiratory therapist should expect which of
the following will increase?
A. HCO3-
B. pH
C. PETCO2
D. VD/VT
pH
Explain:
A. A decrease in carbon dioxide will not directly affect bicarbonate and may
A+ TEST BANK 1
, NBRC / TMC / RRT Exam 2025
indirectly cause a slight decrease.
B. Carbon dioxide and pH move in opposite directions, so a decrease in carbon
dioxide will increase pH.
C. A decrease in arterial carbon dioxide will result in a decrease in end-tidal
carbon dioxide.
D. Decreasing the arterial carbon dioxide tension does not affect dead space
ventilation.
A respiratory therapist discovers a patient with severe peripheral vascular
disease has QRS complexes on the monitor but no palpable pulse. The
automated blood pressure is 40/0 mm Hg. Which of the following is most
appropriate?
A. Check pulses with a Doppler
B. Perform cardiac compressions
C. Obtain an arterial blood gas sample
D. Insert a temporary pacemaker
Perform cardiac compressions
Explain:
A. A Doppler may be able to detect a pulse in a patient with severe hypotension,
but it would not help correct the problem. See explanation B.
B. The patient has PEA (pulseless electrical activity) requiring immediate cardiac
compressions.
C. Obtaining an arterial blood gas sample in a patient with severe hypotension
may be extremely difficult and will delay appropriate treatment. See explanation
B.
D. A temporary pacemaker is indicated for a patient without electrical activity.
See explanation B.
A+ TEST BANK 2
, NBRC / TMC / RRT Exam 2025
A 31-year-old female who is a victim of a residential fire is brought to the ED and
is receiving oxygen by nasal cannula at 8 L/min. SpO2 is 100%. The following data
are observed:
pH 7.31
PCO2 32 mm Hg
PO2 205 mm Hg
HCO3- 16 mEq/L
BE -9 mEq/L
SO2 (meas) 99%O2
Hb 78%
COHb 21%
Hb 14.5 g/dL
A respiratory therapist should recommend
A. Changing to 0.50 with an air-entrainment mask system
B. Administering an FIO2 of 0.60 with an HHFNC
C. Maintaining current oxygen therapy
D. Switching to a nonrebreathing mask at 15 L/min
Switching to a nonrebreathing mask at 15 L/min
Explain:
The treatment for carbon monoxide poisoning is a high concentration of oxygen
(as close as possible to 100%) administered by nonrebreathing mask.
A respiratory therapist has placed an unconscious, apneic 80-kg (176-lb),
postoperative thoracotomy patient onto the ventilator with these settings:
Mode VC, SIMV
Rate 12/min
Oxygen 40%
Tidal volume 600 mL
Arterial blood gases after 20 minutes show:
A+ TEST BANK 3
, NBRC / TMC / RRT Exam 2025
pH 7.51
PaCO2 29 mm Hg
PaO2 93 mm Hg
HCO3- 23 mEq/L
BE -1 mEq/L
A. Reduce the SIMV rate
B. Decrease the oxygen to 35%
C. Add 50 mL of mechanical dead space
D. Change to VC, A/C mode at a rate of 12/min
Reduce the SIMV rate
Explain:
A. Reducing the rate will result in a lower minute volume and correct respiratory
alkalosis.
B. Reducing the oxygen percentage will not affect respiratory alkalosis.
C. Although this is helpful, 50 mL is not enough mechanical dead space to
correct respiratory alkalosis.
D. This will result in the same minute volume. The patient will continue to be
hyperventilated.
A male patient who is 80 kg (176 lb) and 180 cm (5 ft 11 in) is orally intubated
with a 7.0-mm ID endotracheal tube. Mechanical ventilation was initiated with
an HME in the circuit. Suctioning the patient's secretions effectively after seven
days has become increasingly difficult. The respiratory therapist should
1. Use a smaller suction catheter.
2. Replace the HME with a heated humidifier.
3. Recommend changing to a larger endotracheal tube.
4. Administer dornase alfa (Pulmozyme)
A+ TEST BANK 4
NBRC / TMC / RRT Exam 4 2025 Prep Test Bank
with 350 VERIFIED QUESTIONS WITH
CORRECT DETAILED ANSWERS &
RATIONALES | ATI RN COMPREHENSIVE
PREDICTOR WITH NGN LATEST VERSION
Mechanical ventilation was initiated for a patient, after which the PaCO2
decreased from 53 to 40 mm Hg. A respiratory therapist should expect which of
the following will increase?
A. HCO3-
B. pH
C. PETCO2
D. VD/VT
pH
Explain:
A. A decrease in carbon dioxide will not directly affect bicarbonate and may
A+ TEST BANK 1
, NBRC / TMC / RRT Exam 2025
indirectly cause a slight decrease.
B. Carbon dioxide and pH move in opposite directions, so a decrease in carbon
dioxide will increase pH.
C. A decrease in arterial carbon dioxide will result in a decrease in end-tidal
carbon dioxide.
D. Decreasing the arterial carbon dioxide tension does not affect dead space
ventilation.
A respiratory therapist discovers a patient with severe peripheral vascular
disease has QRS complexes on the monitor but no palpable pulse. The
automated blood pressure is 40/0 mm Hg. Which of the following is most
appropriate?
A. Check pulses with a Doppler
B. Perform cardiac compressions
C. Obtain an arterial blood gas sample
D. Insert a temporary pacemaker
Perform cardiac compressions
Explain:
A. A Doppler may be able to detect a pulse in a patient with severe hypotension,
but it would not help correct the problem. See explanation B.
B. The patient has PEA (pulseless electrical activity) requiring immediate cardiac
compressions.
C. Obtaining an arterial blood gas sample in a patient with severe hypotension
may be extremely difficult and will delay appropriate treatment. See explanation
B.
D. A temporary pacemaker is indicated for a patient without electrical activity.
See explanation B.
A+ TEST BANK 2
, NBRC / TMC / RRT Exam 2025
A 31-year-old female who is a victim of a residential fire is brought to the ED and
is receiving oxygen by nasal cannula at 8 L/min. SpO2 is 100%. The following data
are observed:
pH 7.31
PCO2 32 mm Hg
PO2 205 mm Hg
HCO3- 16 mEq/L
BE -9 mEq/L
SO2 (meas) 99%O2
Hb 78%
COHb 21%
Hb 14.5 g/dL
A respiratory therapist should recommend
A. Changing to 0.50 with an air-entrainment mask system
B. Administering an FIO2 of 0.60 with an HHFNC
C. Maintaining current oxygen therapy
D. Switching to a nonrebreathing mask at 15 L/min
Switching to a nonrebreathing mask at 15 L/min
Explain:
The treatment for carbon monoxide poisoning is a high concentration of oxygen
(as close as possible to 100%) administered by nonrebreathing mask.
A respiratory therapist has placed an unconscious, apneic 80-kg (176-lb),
postoperative thoracotomy patient onto the ventilator with these settings:
Mode VC, SIMV
Rate 12/min
Oxygen 40%
Tidal volume 600 mL
Arterial blood gases after 20 minutes show:
A+ TEST BANK 3
, NBRC / TMC / RRT Exam 2025
pH 7.51
PaCO2 29 mm Hg
PaO2 93 mm Hg
HCO3- 23 mEq/L
BE -1 mEq/L
A. Reduce the SIMV rate
B. Decrease the oxygen to 35%
C. Add 50 mL of mechanical dead space
D. Change to VC, A/C mode at a rate of 12/min
Reduce the SIMV rate
Explain:
A. Reducing the rate will result in a lower minute volume and correct respiratory
alkalosis.
B. Reducing the oxygen percentage will not affect respiratory alkalosis.
C. Although this is helpful, 50 mL is not enough mechanical dead space to
correct respiratory alkalosis.
D. This will result in the same minute volume. The patient will continue to be
hyperventilated.
A male patient who is 80 kg (176 lb) and 180 cm (5 ft 11 in) is orally intubated
with a 7.0-mm ID endotracheal tube. Mechanical ventilation was initiated with
an HME in the circuit. Suctioning the patient's secretions effectively after seven
days has become increasingly difficult. The respiratory therapist should
1. Use a smaller suction catheter.
2. Replace the HME with a heated humidifier.
3. Recommend changing to a larger endotracheal tube.
4. Administer dornase alfa (Pulmozyme)
A+ TEST BANK 4
