NBRC EXIT EXAM– High-Yield TMC & CSE Practice
Questions, Verified Answers & Clinical Rationales (Pass
Guarantee RRT/CRT PDF)
"Pass your NBRC Exit Exam on your very first attempt and unlock your pathway to
becoming an RRT or CRT with this comprehensive 2026 study guide. This instant
download features highly predictive multiple-choice questions and clinical simulation
pathways complete with verified exact answers and detailed, NBRC-aligned rationales.
Skip the stress of program exit requirements and download the precise mechanical
ventilation, ABG interpretation, and patient assessment data you need to pass today!"
Question 1
A 48-year-old female patient with severe ARDS is receiving volume-controlled
mechanical ventilation. The respiratory therapist notes that the patient's plateau
pressure is 34 cm H2O and the compliance has decreased. Which of the following
changes should the therapist recommend to protect the lungs from barotrauma?
A) Increase the set tidal volume.
B) Decrease the set tidal volume and increase the respiratory rate.
C) Switch to a non-rebreather mask.
D) Decrease the positive end-expiratory pressure (PEEP).
Correct Answer: B) Decrease the set tidal volume and increase the respiratory
rate.
Rationale: In patients with ARDS, lung-protective ventilation strategies are essential. A
plateau pressure greater than 30 cm H2O increases the risk of barotrauma and
volutrauma. Decreasing the tidal volume helps lower the plateau pressure, while
increasing the respiratory rate helps maintain adequate minute ventilation and minimize
respiratory acidosis.
Question 2
A respiratory therapist performs an Allen's test on a patient's right wrist prior to drawing
an arterial blood gas sample. After releasing pressure over the ulnar artery while
keeping the radial artery compressed, the patient's hand remains blanched for 15
seconds. What is the most appropriate action?
,A) Proceed with the arterial puncture on the right radial artery.
B) Perform the arterial puncture on the right brachial artery instead.
C) Perform the Allen's test on the left hand.
D) Warm the right wrist for 10 minutes and repeat the puncture.
Correct Answer: C) Perform the Allen's test on the left hand.
Rationale: A positive or normal Allen's test is indicated by the return of color to the hand
within 5 to 10 seconds, showing adequate collateral circulation through the ulnar artery.
A result of 15 seconds indicates poor collateral blood flow to the right hand, making a
right radial puncture unsafe. The therapist must check the collateral circulation in the
other hand.
Question 3
During a routine ventilator check on an adult patient, the respiratory therapist notes a
sudden drop in the exhaled tidal volume and an activation of the low-pressure alarm.
The patient is anxious and tachypneic. Which of the following should the therapist check
first?
A) Check for a circuit disconnection or an underinflated endotracheal tube cuff.
B) Change the ventilator pre-use filters.
C) Obtain an emergent portable chest radiograph.
D) Increase the pressure limit alarm settings.
Correct Answer: A) Check for a circuit disconnection or an underinflated
endotracheal tube cuff.
Rationale: A sudden drop in exhaled tidal volume combined with a low-pressure alarm
is a classic presentation of a major leak in the system, typically caused by a circuit
disconnection or a deflated endotracheal tube cuff. Identifying and fixing the leak
immediately restores mechanical ventilation support.
Question 4
A 58-year-old male with a history of heart failure is admitted with shortness of breath.
Physical examination reveals bilateral pitting edema and jugular venous distension.
Hemodynamic monitoring shows a Central Venous Pressure (CVP) of 14 mmHg and a
Pulmonary Artery Wedge Pressure (PAWP) of 20 mmHg. Which treatment is indicated?
,A) Intravenous administration of a diuretic.
B) Rapid infusion of 500 mL normal saline.
C) Initiation of an intravenous vasopressor.
D) Administration of a beta-blocker bolus.
Correct Answer: A) Intravenous administration of a diuretic.
Rationale: The patient displays signs of fluid volume overload, as confirmed by an
elevated CVP (normal 2–6 mmHg) and elevated PAWP (normal 4–12 mmHg).
Administering a diuretic like furosemide will help reduce intravascular volume, lower
filling pressures, and alleviate pulmonary congestion.
Question 5
A respiratory therapist is preparing to perform spirometry on a 35-year-old male patient
suspected of having asthma. To meet the ATS criteria for a valid Forced Vital Capacity
(FVC) maneuver, the patient must exhale forcefully for a minimum of how many
seconds?
A) 3 seconds
B) 4 seconds
C) 6 seconds
D) 10 seconds
Correct Answer: C) 6 seconds
Rationale: According to the American Thoracic Society (ATS) guidelines, adult patients
must achieve an exhalation time of at least 6 seconds during a Forced Vital Capacity
(FVC) maneuver to ensure a complete evaluation of the lung volumes and a plateau in
the volume-time curve.
Question 6
A 24-year-old male is brought to the emergency department following a motor vehicle
crash. He is responsive but in severe respiratory distress. A chest X-ray reveals multiple
rib fractures on the left side, and the left chest wall moves inward during inspiration and
outward during expiration. What is the most appropriate management?
, A) Apply a tight compression wrap around the thorax.
B) Place the patient in a prone position.
C) Provide positive pressure ventilation.
D) Administer high-dose nebulized bronchodilators.
Correct Answer: C) Provide positive pressure ventilation.
Rationale: Paradoxical chest wall movement (inward during inspiration, outward during
expiration) indicates a flail chest. Positive pressure ventilation (either non-invasive or
invasive mechanical ventilation) stabilizes the chest wall internally by ensuring
expanding pressures during inspiration, improving oxygenation and ventilation.
Question 7
A patient diagnosed with myasthenia gravis is being monitored on a medical floor for
respiratory muscle weakness. Which of the following parameters, if observed, would
serve as the strongest indicator that the patient requires mechanical ventilatory
support?
A) Vital Capacity of 28 mL/kg
B) Maximum Inspiratory Pressure (MIP) of -15 cm H2O
C) Rapid Shallow Breathing Index (RSBI) of 65
D) Arterial pH of 7.38
Correct Answer: B) Maximum Inspiratory Pressure (MIP) of -15 cm H2O
Rationale: Neuromuscular disorders cause progressive respiratory failure due to muscle
weakness. A Maximum Inspiratory Pressure (MIP) less negative than -20 cm H2O (e.g.,
-15 cm H2O) is a strong clinical indicator of respiratory muscle failure, necessitating
prophylactic intubation or mechanical support before a complete arrest occurs.
Question 8
The respiratory therapist evaluates a 12-year-old female patient with an acute asthma
exacerbation in the emergency room. Despite receiving three back-to-back treatments
with nebulized albuterol, the patient remains dyspneic, tachypneic, and her breath
sounds have transitioned from expiratory wheezing to diminished throughout. This
signifies:
Questions, Verified Answers & Clinical Rationales (Pass
Guarantee RRT/CRT PDF)
"Pass your NBRC Exit Exam on your very first attempt and unlock your pathway to
becoming an RRT or CRT with this comprehensive 2026 study guide. This instant
download features highly predictive multiple-choice questions and clinical simulation
pathways complete with verified exact answers and detailed, NBRC-aligned rationales.
Skip the stress of program exit requirements and download the precise mechanical
ventilation, ABG interpretation, and patient assessment data you need to pass today!"
Question 1
A 48-year-old female patient with severe ARDS is receiving volume-controlled
mechanical ventilation. The respiratory therapist notes that the patient's plateau
pressure is 34 cm H2O and the compliance has decreased. Which of the following
changes should the therapist recommend to protect the lungs from barotrauma?
A) Increase the set tidal volume.
B) Decrease the set tidal volume and increase the respiratory rate.
C) Switch to a non-rebreather mask.
D) Decrease the positive end-expiratory pressure (PEEP).
Correct Answer: B) Decrease the set tidal volume and increase the respiratory
rate.
Rationale: In patients with ARDS, lung-protective ventilation strategies are essential. A
plateau pressure greater than 30 cm H2O increases the risk of barotrauma and
volutrauma. Decreasing the tidal volume helps lower the plateau pressure, while
increasing the respiratory rate helps maintain adequate minute ventilation and minimize
respiratory acidosis.
Question 2
A respiratory therapist performs an Allen's test on a patient's right wrist prior to drawing
an arterial blood gas sample. After releasing pressure over the ulnar artery while
keeping the radial artery compressed, the patient's hand remains blanched for 15
seconds. What is the most appropriate action?
,A) Proceed with the arterial puncture on the right radial artery.
B) Perform the arterial puncture on the right brachial artery instead.
C) Perform the Allen's test on the left hand.
D) Warm the right wrist for 10 minutes and repeat the puncture.
Correct Answer: C) Perform the Allen's test on the left hand.
Rationale: A positive or normal Allen's test is indicated by the return of color to the hand
within 5 to 10 seconds, showing adequate collateral circulation through the ulnar artery.
A result of 15 seconds indicates poor collateral blood flow to the right hand, making a
right radial puncture unsafe. The therapist must check the collateral circulation in the
other hand.
Question 3
During a routine ventilator check on an adult patient, the respiratory therapist notes a
sudden drop in the exhaled tidal volume and an activation of the low-pressure alarm.
The patient is anxious and tachypneic. Which of the following should the therapist check
first?
A) Check for a circuit disconnection or an underinflated endotracheal tube cuff.
B) Change the ventilator pre-use filters.
C) Obtain an emergent portable chest radiograph.
D) Increase the pressure limit alarm settings.
Correct Answer: A) Check for a circuit disconnection or an underinflated
endotracheal tube cuff.
Rationale: A sudden drop in exhaled tidal volume combined with a low-pressure alarm
is a classic presentation of a major leak in the system, typically caused by a circuit
disconnection or a deflated endotracheal tube cuff. Identifying and fixing the leak
immediately restores mechanical ventilation support.
Question 4
A 58-year-old male with a history of heart failure is admitted with shortness of breath.
Physical examination reveals bilateral pitting edema and jugular venous distension.
Hemodynamic monitoring shows a Central Venous Pressure (CVP) of 14 mmHg and a
Pulmonary Artery Wedge Pressure (PAWP) of 20 mmHg. Which treatment is indicated?
,A) Intravenous administration of a diuretic.
B) Rapid infusion of 500 mL normal saline.
C) Initiation of an intravenous vasopressor.
D) Administration of a beta-blocker bolus.
Correct Answer: A) Intravenous administration of a diuretic.
Rationale: The patient displays signs of fluid volume overload, as confirmed by an
elevated CVP (normal 2–6 mmHg) and elevated PAWP (normal 4–12 mmHg).
Administering a diuretic like furosemide will help reduce intravascular volume, lower
filling pressures, and alleviate pulmonary congestion.
Question 5
A respiratory therapist is preparing to perform spirometry on a 35-year-old male patient
suspected of having asthma. To meet the ATS criteria for a valid Forced Vital Capacity
(FVC) maneuver, the patient must exhale forcefully for a minimum of how many
seconds?
A) 3 seconds
B) 4 seconds
C) 6 seconds
D) 10 seconds
Correct Answer: C) 6 seconds
Rationale: According to the American Thoracic Society (ATS) guidelines, adult patients
must achieve an exhalation time of at least 6 seconds during a Forced Vital Capacity
(FVC) maneuver to ensure a complete evaluation of the lung volumes and a plateau in
the volume-time curve.
Question 6
A 24-year-old male is brought to the emergency department following a motor vehicle
crash. He is responsive but in severe respiratory distress. A chest X-ray reveals multiple
rib fractures on the left side, and the left chest wall moves inward during inspiration and
outward during expiration. What is the most appropriate management?
, A) Apply a tight compression wrap around the thorax.
B) Place the patient in a prone position.
C) Provide positive pressure ventilation.
D) Administer high-dose nebulized bronchodilators.
Correct Answer: C) Provide positive pressure ventilation.
Rationale: Paradoxical chest wall movement (inward during inspiration, outward during
expiration) indicates a flail chest. Positive pressure ventilation (either non-invasive or
invasive mechanical ventilation) stabilizes the chest wall internally by ensuring
expanding pressures during inspiration, improving oxygenation and ventilation.
Question 7
A patient diagnosed with myasthenia gravis is being monitored on a medical floor for
respiratory muscle weakness. Which of the following parameters, if observed, would
serve as the strongest indicator that the patient requires mechanical ventilatory
support?
A) Vital Capacity of 28 mL/kg
B) Maximum Inspiratory Pressure (MIP) of -15 cm H2O
C) Rapid Shallow Breathing Index (RSBI) of 65
D) Arterial pH of 7.38
Correct Answer: B) Maximum Inspiratory Pressure (MIP) of -15 cm H2O
Rationale: Neuromuscular disorders cause progressive respiratory failure due to muscle
weakness. A Maximum Inspiratory Pressure (MIP) less negative than -20 cm H2O (e.g.,
-15 cm H2O) is a strong clinical indicator of respiratory muscle failure, necessitating
prophylactic intubation or mechanical support before a complete arrest occurs.
Question 8
The respiratory therapist evaluates a 12-year-old female patient with an acute asthma
exacerbation in the emergency room. Despite receiving three back-to-back treatments
with nebulized albuterol, the patient remains dyspneic, tachypneic, and her breath
sounds have transitioned from expiratory wheezing to diminished throughout. This
signifies:
