Page 1 of 149
NBRC RRT EXAM AND STUDY GUIDE NEWEST 2025 TEST
BANK| COMPLETE 550 REAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
GRADED A+| REGISTERED RESPIRATORY THERAPIST
NBRC EXAM PREP 2025 (MOST RECENT!!)
A 70 kg patient receiving mechanical ventilation has a tidal volume of
900 ml, frequency of 12, PIP of 45 and PEEP of 10. When an inspiratory
hold plateau of .5 sec is activated, the static pressure is 35 cmH2O.
Determine the patient's dynamic compliance.
A. 15.21 ml/cmH2O
B. 25.71 ml/cmH2O
C. 29.46 ml/cmH2O
D. 32.09 ml/cmH2O - Correct Answer -B. 25.71 ml/cmH2O
Reviewing the chart of a newly admitted patient, the respiratory therapist
finds that the patient has COPD, a 70 pack year smoking history, and
was admitted for dyspnea. The patient is unresponsive and has a BP of
180/100 mm Hg and a respiratory rate of 40/min. Which of the
following should the therapist review next?
A. Chest radiograph report
B. PaCO2
C. SpO2
D. ECG - Correct Answer -B. PaCO2
pg. 1
,Page 2 of 149
A patient who is on a volume ventilator has the following measurements:
corrected tidal volume = 780 ml, peak airway pressure = 55 cmH2O,
plateau pressure = 35 cmH20, and PEEP of 10 cmH2O. What is the
dynamic compliance?
A. 17.3 ml/cmH2O
B. 22.3 ml/cmH2O
C. 14.2 ml/cmH2O
D. 31.2 ml/cmH2O - Correct Answer -A. 17.3 ml/cmH2O
The respiratory therapist is participating in the resuscitation of a patient.
After 5 minutes of CPR, the ECG shows ventricular fibrillation.
Attempted defibrillation with 200 joules has been ineffective. The
therapist's next recommendation should be to:
A. Perform a precordial thump.
B. Perform endotracheal intubation.
C. Implement cardioversion with 300 joules.
D. Implement defibrillation with 300 joules. - Correct Answer -D.
Implement defibrillation with 300 joules.
A patient being mechanically ventilated is intubated with an 8mm
endotracheal tube. While suctioning the patient with a 12 Fr catheter
after pre-oxygenation, the respiratory therapist notes the patient becomes
bradycardiac, and the oxygen saturation decreases. The therapist should
recommend changing to a:
A. 10 mm catheter.
pg. 2
,Page 3 of 149
B. Closed-suction system.
C. 14 Fr whistle-tip catheter.
D. Suctioning frequency of q4h. - Correct Answer -B. Closed-suction
system
Calculate the estimated airway resistance of a patient whose peak airway
pressure is 25 cmH2O, plateau pressure of 10 cmH2O, and ventilator
flow rate is set at 60 L/min.
A. 15 cmH2O/L/sec, normal
B. 15 cmH2O/L/sec, abnormal
C. 10 cmH2O/L/sec, normal
D. 10 cmH2O/L/sec, abnormal - Correct Answer -B. 15 cmH2O/L/sec,
abnormal
Calculate the alveolar oxygen tension (PAO2) given the following
values: PB = 750 mmHg, FiO2 - 30%, and PaCO2 - 40.
A. 100 mmHg
B. 130 mmHg
C. 161 mmHg
D. 190 mmHg - Correct Answer -C. 161 mmHg
Exhaled volumes are collected from a patient over a 1 minute interval;
during this time it is determined that the average tidal volume is 714 ml
with a total minute ventilation of 10 L. What is the patient's frequency?
pg. 3
, Page 4 of 149
A. 10 breaths per minute
B. 14 breaths per minute
C. 18 breaths per minute
D. 24 breaths per minute - Correct Answer -B. 14 breaths per minute
A patient suspect of having carbon monoxide poisoning presents to the
ER. CO-oximeter results reveal the following:
17.5 g total HB
4.7 g COHb
1.0 g MetHb
Based on this information, the patient's saturation of arterial blood
should be:
A. 95%
B. 67%
C. 75%
D. 55% - Correct Answer -B. 67%
Given the following values for room air: PAO2 - 105 mmHg, PaO2 - 70
mmHg, what is the P(A-a)O2? Is it normal?
A. 70 mmHg; normal
B. 70 mmHg; abnormal
C. 35 mmHg; normal
D. 35 mmHg; abnormal - Correct Answer -D. 35 mmHg; abnormal
pg. 4
NBRC RRT EXAM AND STUDY GUIDE NEWEST 2025 TEST
BANK| COMPLETE 550 REAL EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
GRADED A+| REGISTERED RESPIRATORY THERAPIST
NBRC EXAM PREP 2025 (MOST RECENT!!)
A 70 kg patient receiving mechanical ventilation has a tidal volume of
900 ml, frequency of 12, PIP of 45 and PEEP of 10. When an inspiratory
hold plateau of .5 sec is activated, the static pressure is 35 cmH2O.
Determine the patient's dynamic compliance.
A. 15.21 ml/cmH2O
B. 25.71 ml/cmH2O
C. 29.46 ml/cmH2O
D. 32.09 ml/cmH2O - Correct Answer -B. 25.71 ml/cmH2O
Reviewing the chart of a newly admitted patient, the respiratory therapist
finds that the patient has COPD, a 70 pack year smoking history, and
was admitted for dyspnea. The patient is unresponsive and has a BP of
180/100 mm Hg and a respiratory rate of 40/min. Which of the
following should the therapist review next?
A. Chest radiograph report
B. PaCO2
C. SpO2
D. ECG - Correct Answer -B. PaCO2
pg. 1
,Page 2 of 149
A patient who is on a volume ventilator has the following measurements:
corrected tidal volume = 780 ml, peak airway pressure = 55 cmH2O,
plateau pressure = 35 cmH20, and PEEP of 10 cmH2O. What is the
dynamic compliance?
A. 17.3 ml/cmH2O
B. 22.3 ml/cmH2O
C. 14.2 ml/cmH2O
D. 31.2 ml/cmH2O - Correct Answer -A. 17.3 ml/cmH2O
The respiratory therapist is participating in the resuscitation of a patient.
After 5 minutes of CPR, the ECG shows ventricular fibrillation.
Attempted defibrillation with 200 joules has been ineffective. The
therapist's next recommendation should be to:
A. Perform a precordial thump.
B. Perform endotracheal intubation.
C. Implement cardioversion with 300 joules.
D. Implement defibrillation with 300 joules. - Correct Answer -D.
Implement defibrillation with 300 joules.
A patient being mechanically ventilated is intubated with an 8mm
endotracheal tube. While suctioning the patient with a 12 Fr catheter
after pre-oxygenation, the respiratory therapist notes the patient becomes
bradycardiac, and the oxygen saturation decreases. The therapist should
recommend changing to a:
A. 10 mm catheter.
pg. 2
,Page 3 of 149
B. Closed-suction system.
C. 14 Fr whistle-tip catheter.
D. Suctioning frequency of q4h. - Correct Answer -B. Closed-suction
system
Calculate the estimated airway resistance of a patient whose peak airway
pressure is 25 cmH2O, plateau pressure of 10 cmH2O, and ventilator
flow rate is set at 60 L/min.
A. 15 cmH2O/L/sec, normal
B. 15 cmH2O/L/sec, abnormal
C. 10 cmH2O/L/sec, normal
D. 10 cmH2O/L/sec, abnormal - Correct Answer -B. 15 cmH2O/L/sec,
abnormal
Calculate the alveolar oxygen tension (PAO2) given the following
values: PB = 750 mmHg, FiO2 - 30%, and PaCO2 - 40.
A. 100 mmHg
B. 130 mmHg
C. 161 mmHg
D. 190 mmHg - Correct Answer -C. 161 mmHg
Exhaled volumes are collected from a patient over a 1 minute interval;
during this time it is determined that the average tidal volume is 714 ml
with a total minute ventilation of 10 L. What is the patient's frequency?
pg. 3
, Page 4 of 149
A. 10 breaths per minute
B. 14 breaths per minute
C. 18 breaths per minute
D. 24 breaths per minute - Correct Answer -B. 14 breaths per minute
A patient suspect of having carbon monoxide poisoning presents to the
ER. CO-oximeter results reveal the following:
17.5 g total HB
4.7 g COHb
1.0 g MetHb
Based on this information, the patient's saturation of arterial blood
should be:
A. 95%
B. 67%
C. 75%
D. 55% - Correct Answer -B. 67%
Given the following values for room air: PAO2 - 105 mmHg, PaO2 - 70
mmHg, what is the P(A-a)O2? Is it normal?
A. 70 mmHg; normal
B. 70 mmHg; abnormal
C. 35 mmHg; normal
D. 35 mmHg; abnormal - Correct Answer -D. 35 mmHg; abnormal
pg. 4
