CRT/RRT RESPIRATORY EXAM – QUESTIONS AND ANSWERS |
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES |
GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains:
Clinical Data Interpretation and Assessment
Diagnostic Procedures and Monitoring
Airway Management and Emergency Response
Mechanical Ventilation Initiation and Management
Pharmacology and Aerosol Administration
Cardiopulmonary Disease Management
Professional Practice, Ethics, and Safety
Introduction:
This comprehensive examination is designed to rigorously evaluate the
competence and readiness of respiratory therapy candidates seeking
certification or registration. The assessment thoroughly measures
essential clinical skills, theoretical knowledge, and patient management
capabilities required across diverse healthcare environments. Utilizing a
robust blend of multiple-choice items and complex clinical scenarios,
the exam emphasizes real-world application, critical thinking, and
evidence-based decision-making. Candidates are tested on their ability
to analyze diagnostic data, manage complex mechanical ventilation,
execute emergent airway protocols, and apply ethical standards to
ensure optimal patient outcomes and safety in professional practice.
SECTION ONE: QUESTIONS 1–100
A 56-year-old male with chronic obstructive pulmonary disease
(COPD) is admitted to the emergency department with acute
shortness of breath. Arterial blood gas results on room air show:
pH 7.31, PaCO2 62 mm Hg, PaO2 52 mm Hg, HCO3 31 mmol/L.
What is the primary acid-base disorder?
,A. Acute respiratory alkalosis with hypoxemia
B. Acute metabolic acidosis with respiratory compensation
C. Acute-on-chronic respiratory acidosis with severe hypoxemia
D. Fully compensated metabolic alkalosis
🟢 C. Acute-on-chronic respiratory acidosis with severe hypoxemia
🔴 Explanation: The pH is below normal (acidemia), PaCO2 is elevated
due to alveolar hypoventilation, and HCO3 is significantly elevated as a
renal compensatory mechanism indicating chronicity. The PaO2 of 52
mm Hg reflects severe hypoxemia.
Which of the following parameters is most reliable for assessing
the adequacy of alveolar ventilation in a mechanically ventilated
patient?
A. SpO2 via pulse oximetry
B. Arterial partial pressure of carbon dioxide (PaCO2)
C. Exhaled tidal volume (VTE)
D. Peak inspiratory pressure (PIP)
🟢 B. Arterial partial pressure of carbon dioxide (PaCO2)
🔴 Explanation: PaCO2 is the direct clinical indicator of alveolar
ventilation. An elevated PaCO2 indicates hypoventilation, whereas a
decreased PaCO2 indicates hyperventilation.
During a routine circuit check on a volume-controlled mechanical
ventilator, the low exhaled volume alarm sounds. Which of the
following is the most appropriate immediate action?
A. Increase the high-pressure limit
B. Manually ventilate the patient and check the circuit for leaks or
disconnection
C. Increase the set tidal volume
D. Switch the ventilator to pressure support mode
🟢 B. Manually ventilate the patient and check the circuit for leaks or
disconnection
,🔴 Explanation: Patient safety is the primary concern when an alarm
sounds. Ventilating with a manual resuscitator ensures immediate gas
exchange while troubleshooting the circuit for disconnection, leaks, or
endotracheal tube cuff leaks.
A patient is receiving oxygen via a simple mask at 6 L/min. What
is the approximate fraction of inspired oxygen (FiO2) delivered by
this device?
A. 0.24 to 0.28
B. 0.35 to 0.40
C. 0.40 to 0.60
D. 0.70 to 1.00
🟢 C. 0.40 to 0.60
🔴 Explanation: A simple face mask operated at flow rates between 5
to 10 L/min typically delivers an FiO2 ranging from 0.40 to 0.60,
depending on the patient's inspiratory flow and breathing pattern.
Which of the following drugs is a short-acting beta-2 agonist
commonly used for rapid relief of bronchospasm?
A. Salmeterol
B. Albuterol
C. Tiotropium
D. Fluticasone
🟢 B. Albuterol
🔴 Explanation: Albuterol is a short-acting beta-2 adrenergic agonist
with a rapid onset, making it the primary choice for acute
bronchospasm relief. Salmeterol is a long-acting agent, tiotropium is an
anticholinergic, and fluticasone is an inhaled corticosteroid.
A patient with a chest tube connected to a water-seal system
demonstrates continuous bubbling in the water-seal chamber
during inspiration and expiration. What does this finding indicate?
A. Complete lung re-expansion
B. Normal pleural pressure fluctuations
, C. An active air leak in the system or pleural space
D. Obstruction of the chest tube
🟢 C. An active air leak in the system or pleural space
🔴 Explanation: Continuous bubbling in the water-seal chamber
indicates that air is continuously entering the pleural space or the
drainage system, signifying an active air leak. Intermittent bubbling that
coincides with respiration usually indicates a pneumothorax resolving or
air escaping with coughing.
Which of the following pulmonary function test values represents
the maximum volume of air that can be exhaled forcibly after a
maximal inspiration?
A. Residual Volume (RV)
B. Functional Residual Capacity (FRC)
C. Forced Vital Capacity (FVC)
D. Inspiratory Capacity (IC)
🟢 C. Forced Vital Capacity (FVC)
🔴 Explanation: Forced Vital Capacity (FVC) is the maximum volume of
gas a patient can forcefully and rapidly exhale after taking a complete,
maximal inhalation.
When performing endotracheal suctioning on an adult patient,
what is the maximum recommended negative pressure for the
vacuum regulator?
A. -40 to -60 mm Hg
B. -80 to -100 mm Hg
C. -120 to -150 mm Hg
D. -200 to -250 mm Hg
🟢 C. -120 to -150 mm Hg
🔴 Explanation: For adult patients, the vacuum regulator should be set
between -120 and -150 mm Hg to ensure effective secretion removal
while minimizing trauma to the tracheal mucosa. Higher pressures
increase the risk of tissue damage and hypoxemia.
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES |
GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains:
Clinical Data Interpretation and Assessment
Diagnostic Procedures and Monitoring
Airway Management and Emergency Response
Mechanical Ventilation Initiation and Management
Pharmacology and Aerosol Administration
Cardiopulmonary Disease Management
Professional Practice, Ethics, and Safety
Introduction:
This comprehensive examination is designed to rigorously evaluate the
competence and readiness of respiratory therapy candidates seeking
certification or registration. The assessment thoroughly measures
essential clinical skills, theoretical knowledge, and patient management
capabilities required across diverse healthcare environments. Utilizing a
robust blend of multiple-choice items and complex clinical scenarios,
the exam emphasizes real-world application, critical thinking, and
evidence-based decision-making. Candidates are tested on their ability
to analyze diagnostic data, manage complex mechanical ventilation,
execute emergent airway protocols, and apply ethical standards to
ensure optimal patient outcomes and safety in professional practice.
SECTION ONE: QUESTIONS 1–100
A 56-year-old male with chronic obstructive pulmonary disease
(COPD) is admitted to the emergency department with acute
shortness of breath. Arterial blood gas results on room air show:
pH 7.31, PaCO2 62 mm Hg, PaO2 52 mm Hg, HCO3 31 mmol/L.
What is the primary acid-base disorder?
,A. Acute respiratory alkalosis with hypoxemia
B. Acute metabolic acidosis with respiratory compensation
C. Acute-on-chronic respiratory acidosis with severe hypoxemia
D. Fully compensated metabolic alkalosis
🟢 C. Acute-on-chronic respiratory acidosis with severe hypoxemia
🔴 Explanation: The pH is below normal (acidemia), PaCO2 is elevated
due to alveolar hypoventilation, and HCO3 is significantly elevated as a
renal compensatory mechanism indicating chronicity. The PaO2 of 52
mm Hg reflects severe hypoxemia.
Which of the following parameters is most reliable for assessing
the adequacy of alveolar ventilation in a mechanically ventilated
patient?
A. SpO2 via pulse oximetry
B. Arterial partial pressure of carbon dioxide (PaCO2)
C. Exhaled tidal volume (VTE)
D. Peak inspiratory pressure (PIP)
🟢 B. Arterial partial pressure of carbon dioxide (PaCO2)
🔴 Explanation: PaCO2 is the direct clinical indicator of alveolar
ventilation. An elevated PaCO2 indicates hypoventilation, whereas a
decreased PaCO2 indicates hyperventilation.
During a routine circuit check on a volume-controlled mechanical
ventilator, the low exhaled volume alarm sounds. Which of the
following is the most appropriate immediate action?
A. Increase the high-pressure limit
B. Manually ventilate the patient and check the circuit for leaks or
disconnection
C. Increase the set tidal volume
D. Switch the ventilator to pressure support mode
🟢 B. Manually ventilate the patient and check the circuit for leaks or
disconnection
,🔴 Explanation: Patient safety is the primary concern when an alarm
sounds. Ventilating with a manual resuscitator ensures immediate gas
exchange while troubleshooting the circuit for disconnection, leaks, or
endotracheal tube cuff leaks.
A patient is receiving oxygen via a simple mask at 6 L/min. What
is the approximate fraction of inspired oxygen (FiO2) delivered by
this device?
A. 0.24 to 0.28
B. 0.35 to 0.40
C. 0.40 to 0.60
D. 0.70 to 1.00
🟢 C. 0.40 to 0.60
🔴 Explanation: A simple face mask operated at flow rates between 5
to 10 L/min typically delivers an FiO2 ranging from 0.40 to 0.60,
depending on the patient's inspiratory flow and breathing pattern.
Which of the following drugs is a short-acting beta-2 agonist
commonly used for rapid relief of bronchospasm?
A. Salmeterol
B. Albuterol
C. Tiotropium
D. Fluticasone
🟢 B. Albuterol
🔴 Explanation: Albuterol is a short-acting beta-2 adrenergic agonist
with a rapid onset, making it the primary choice for acute
bronchospasm relief. Salmeterol is a long-acting agent, tiotropium is an
anticholinergic, and fluticasone is an inhaled corticosteroid.
A patient with a chest tube connected to a water-seal system
demonstrates continuous bubbling in the water-seal chamber
during inspiration and expiration. What does this finding indicate?
A. Complete lung re-expansion
B. Normal pleural pressure fluctuations
, C. An active air leak in the system or pleural space
D. Obstruction of the chest tube
🟢 C. An active air leak in the system or pleural space
🔴 Explanation: Continuous bubbling in the water-seal chamber
indicates that air is continuously entering the pleural space or the
drainage system, signifying an active air leak. Intermittent bubbling that
coincides with respiration usually indicates a pneumothorax resolving or
air escaping with coughing.
Which of the following pulmonary function test values represents
the maximum volume of air that can be exhaled forcibly after a
maximal inspiration?
A. Residual Volume (RV)
B. Functional Residual Capacity (FRC)
C. Forced Vital Capacity (FVC)
D. Inspiratory Capacity (IC)
🟢 C. Forced Vital Capacity (FVC)
🔴 Explanation: Forced Vital Capacity (FVC) is the maximum volume of
gas a patient can forcefully and rapidly exhale after taking a complete,
maximal inhalation.
When performing endotracheal suctioning on an adult patient,
what is the maximum recommended negative pressure for the
vacuum regulator?
A. -40 to -60 mm Hg
B. -80 to -100 mm Hg
C. -120 to -150 mm Hg
D. -200 to -250 mm Hg
🟢 C. -120 to -150 mm Hg
🔴 Explanation: For adult patients, the vacuum regulator should be set
between -120 and -150 mm Hg to ensure effective secretion removal
while minimizing trauma to the tracheal mucosa. Higher pressures
increase the risk of tissue damage and hypoxemia.
