CRT Practice Exam | Certified Respiratory Therapist NBRC TMC Exam
Questions with Verified Answers – 2024–2025
This document contains a full-length practice exam with verified answers designed to
prepare candidates for the Certified Respiratory Therapist (CRT) credential through
the NBRC TMC exam. It covers key domains such as patient assessment, respiratory
equipment, oxygen therapy, mechanical ventilation, pharmacology, and emergency
procedures. Structured to reflect real exam difficulty, this resource is ideal for test-
day readiness and comprehensive review.
1. A physician has ordered a 4 year old to receive 40% oxygen therapy. You
would recommend which of the following oxygen delivery devices:
A) Oxygen hood
B) Oxygen tent
C) 5LPM NC
D) an aerosol mask with a jet nebulizer: B) Oxygen tent
2. A water barometer is being used to record the barometric pressure. The
water within the barometer column has a meniscus formation. You would read
the barometric pressure at the:
A) Bottom of the meniscus
B) Top of the meniscus
C) Side of the meniscus
D) Top and side of the meniscus: A) Bottom of the meniscus
,3. The respiratory care practitioner has receive an order to administer 35%
oxygen to a post-operative craniotomy patient. The patient is semi-conscious
with an irregular breathing pattern. The most appropriate oxygen
administration device for this patient would be:
A) A 4LPM Nasal cannula
B) intubation with a 35% aerosol blow-by
C) a simple mask at 4 LPM
D) a Venturi mask: D) a Venturi mask
4. A cuff pressure manometer is connected to the endotracheal tube of a
patient receiving continuous mechanical ventilation. The cuff pressure
reading is 24 torr with a small air leak auscultated during inspiration. Which
of the following should be done:
A) Increase the cuff pressure
B) Maintain this set-up and reassess in 1 hour
C) Recommend changing to a larger endotracheal tube
D) Decrease the cuff pressure and reassess the leak: C) Recommend
changing to a larger endotracheal tube
5. A 12 year old conscious, spontaneously breathing female, weighing 40kg
(88lb) is brought into the ER with a sustained cervical spine injury without any
evidence of other trauma from a motor vehicle accident. The head is secured
with sandbags and arterial blood gas analysis shows respiratory failure. To
maintain the patient's airway, the respiratory care practitioner should
recommend a:
A) 6.0mm nasal endotracheal tube
B) 8.0 mm oral endotracheal tube
C) 7.0 mm tracheotomy tube
D) 8.0 mm esophageal obturator airway tube: A) 6.0mm nasal endotracheal
tube
,6. A 22 year old male is being ventilated with a microprocessor ventilator.
You are checking his cuff with a cuff inflator and as you connect the pilot
balloon thecuff inflator, the pressure measured reads 0 torr. Your first
immediate response would be to:
A) Add 10 ml of air to the pilot balloon
B) inflate the cuff till the manometer reads 20 torr
C) reconnect the pilot balloon to the cuff inflator tightly
D) deflate the cuff and reinflate with 10 ml of air: C) reconnect the pilot balloon
to the cuff inflator tightly
7. Which of the following could be done to minimize mean airway
pressure during an IPPB treatment? 1. Decrease the peak pressure
2. Decrease the I time
3. Increase the E time
4. Increase inspiratory flow
A) 1 only
B) 2 and 3 only
C) 2 and 4 only
D) all the above: D) all the above
8. A patient is on 60% aerosol mask and their inspiratory flow rate is
determined to be 28 LPM. What is the minimum flow rate setting required for
this patient?
A) 8LPM
B) 10 LPM
C) 12 LPM
D) 15 LPM: D) 15 LPM
, 9. A chronic hypercapnic patient is in acute ventilatory failure. The physician
has asked for your recommendation in the care of this patient who is requiring
assisted ventilation. You would recommend:
A) A volume-cycled microprocessor controlled machine
B) BiPAP
C) Positive expiratory pressure mask (PEP)
D) A positive pressure cycled controlled machine: A) A volume-cycled
microprocessor controlled machine
10. A chronic CO2 retainer patient enters the emergency room in moderate
respiratory distress. Which of the following would be the best initial oxygen
delivery device for the patient?
A) 32% venturi mask
B) 2 LPM NC
C) 3 LPM simple mask
D) 8 LPM Partial-rebreathing mask: B) 2 LPM NC
11. When comparing the Wick humidifier system to other humidifier devices,
the main advantage of this device is:
A) The particle size and deposition
B) A relative body humidity of 100% can be obtained
C) a baffle is required to achieve body humidity
D) a heating unit is not required: B) A relative body humidity of 100% can be
obtained
12. A patient is being ventilated with a volume cycle ventilator in the assist-
control mode with a HME humidifier device. The patient has developed thick,
purulent secretions. The respiratory care practitioner should recommend
which of the following at this time?
A) Change to Wick humidifier
B) replace the HME with a new HME
Questions with Verified Answers – 2024–2025
This document contains a full-length practice exam with verified answers designed to
prepare candidates for the Certified Respiratory Therapist (CRT) credential through
the NBRC TMC exam. It covers key domains such as patient assessment, respiratory
equipment, oxygen therapy, mechanical ventilation, pharmacology, and emergency
procedures. Structured to reflect real exam difficulty, this resource is ideal for test-
day readiness and comprehensive review.
1. A physician has ordered a 4 year old to receive 40% oxygen therapy. You
would recommend which of the following oxygen delivery devices:
A) Oxygen hood
B) Oxygen tent
C) 5LPM NC
D) an aerosol mask with a jet nebulizer: B) Oxygen tent
2. A water barometer is being used to record the barometric pressure. The
water within the barometer column has a meniscus formation. You would read
the barometric pressure at the:
A) Bottom of the meniscus
B) Top of the meniscus
C) Side of the meniscus
D) Top and side of the meniscus: A) Bottom of the meniscus
,3. The respiratory care practitioner has receive an order to administer 35%
oxygen to a post-operative craniotomy patient. The patient is semi-conscious
with an irregular breathing pattern. The most appropriate oxygen
administration device for this patient would be:
A) A 4LPM Nasal cannula
B) intubation with a 35% aerosol blow-by
C) a simple mask at 4 LPM
D) a Venturi mask: D) a Venturi mask
4. A cuff pressure manometer is connected to the endotracheal tube of a
patient receiving continuous mechanical ventilation. The cuff pressure
reading is 24 torr with a small air leak auscultated during inspiration. Which
of the following should be done:
A) Increase the cuff pressure
B) Maintain this set-up and reassess in 1 hour
C) Recommend changing to a larger endotracheal tube
D) Decrease the cuff pressure and reassess the leak: C) Recommend
changing to a larger endotracheal tube
5. A 12 year old conscious, spontaneously breathing female, weighing 40kg
(88lb) is brought into the ER with a sustained cervical spine injury without any
evidence of other trauma from a motor vehicle accident. The head is secured
with sandbags and arterial blood gas analysis shows respiratory failure. To
maintain the patient's airway, the respiratory care practitioner should
recommend a:
A) 6.0mm nasal endotracheal tube
B) 8.0 mm oral endotracheal tube
C) 7.0 mm tracheotomy tube
D) 8.0 mm esophageal obturator airway tube: A) 6.0mm nasal endotracheal
tube
,6. A 22 year old male is being ventilated with a microprocessor ventilator.
You are checking his cuff with a cuff inflator and as you connect the pilot
balloon thecuff inflator, the pressure measured reads 0 torr. Your first
immediate response would be to:
A) Add 10 ml of air to the pilot balloon
B) inflate the cuff till the manometer reads 20 torr
C) reconnect the pilot balloon to the cuff inflator tightly
D) deflate the cuff and reinflate with 10 ml of air: C) reconnect the pilot balloon
to the cuff inflator tightly
7. Which of the following could be done to minimize mean airway
pressure during an IPPB treatment? 1. Decrease the peak pressure
2. Decrease the I time
3. Increase the E time
4. Increase inspiratory flow
A) 1 only
B) 2 and 3 only
C) 2 and 4 only
D) all the above: D) all the above
8. A patient is on 60% aerosol mask and their inspiratory flow rate is
determined to be 28 LPM. What is the minimum flow rate setting required for
this patient?
A) 8LPM
B) 10 LPM
C) 12 LPM
D) 15 LPM: D) 15 LPM
, 9. A chronic hypercapnic patient is in acute ventilatory failure. The physician
has asked for your recommendation in the care of this patient who is requiring
assisted ventilation. You would recommend:
A) A volume-cycled microprocessor controlled machine
B) BiPAP
C) Positive expiratory pressure mask (PEP)
D) A positive pressure cycled controlled machine: A) A volume-cycled
microprocessor controlled machine
10. A chronic CO2 retainer patient enters the emergency room in moderate
respiratory distress. Which of the following would be the best initial oxygen
delivery device for the patient?
A) 32% venturi mask
B) 2 LPM NC
C) 3 LPM simple mask
D) 8 LPM Partial-rebreathing mask: B) 2 LPM NC
11. When comparing the Wick humidifier system to other humidifier devices,
the main advantage of this device is:
A) The particle size and deposition
B) A relative body humidity of 100% can be obtained
C) a baffle is required to achieve body humidity
D) a heating unit is not required: B) A relative body humidity of 100% can be
obtained
12. A patient is being ventilated with a volume cycle ventilator in the assist-
control mode with a HME humidifier device. The patient has developed thick,
purulent secretions. The respiratory care practitioner should recommend
which of the following at this time?
A) Change to Wick humidifier
B) replace the HME with a new HME
