RESPIRATORY THERAPIST CERTIFICATION – PRACTICE QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF.
Core Domains
- Mechanical Ventilation Management
- Arterial Blood Gas Analysis
- Pulmonary Function Testing
- Airway Management and Secretion Clearance
- Pharmacological Interventions
- Patient Assessment and Monitoring
- Neonatal and Pediatric Respiratory Care
- Legal, Ethical, and Professional Standards
Introduction
*The purpose of this examination is to rigorously evaluate the clinical competency and
Section One: Questions 1–100
,1. A patient on volume-controlled ventilation has an increase in peak inspiratory
pressure (PIP) but no change in the plateau pressure. What is the most likely
cause?
A. Pulmonary edema
B. Pneumothorax
C. Airway secretions
D. Decreased lung compliance
🟢 C. Airway secretions
🔴 RATIONALE: Increased PIP with an unchanged plateau pressure indicates
increased airway resistance, which is commonly caused by secretions,
bronchospasm, or an obstructed endotracheal tube.
2. Which of the following is the most appropriate initial FiO2 for a patient with severe
hypoxemia?
A. 0.21
B. 0.40
C. 0.60
D. 1.0
🟢 D. 1.0
🔴 RATIONALE: In cases of severe, life-threatening hypoxemia, the immediate
priority is to maximize oxygenation by delivering the highest possible concentration
of oxygen.
,3. During an arterial blood gas (ABG) analysis, the therapist observes a pH of 7.28,
PaCO2 of 55 mm Hg, and HCO3 of 24 mEq/L. How is this interpreted?
A. Respiratory acidosis
B. Metabolic acidosis
C. Respiratory alkalosis
D. Metabolic alkalosis
🟢 A. Respiratory acidosis
🔴 RATIONALE: A low pH combined with an elevated PaCO2 indicates an
uncompensated respiratory acidosis.
4. Which lung volume cannot be measured by simple spirometry?
A. Tidal volume
B. Inspiratory reserve volume
C. Residual volume
D. Expiratory reserve volume
🟢 C. Residual volume
🔴 RATIONALE: Residual volume represents air left in the lungs after maximal
expiration and requires indirect methods like helium dilution or body
plethysmography to measure.
5. A patient develops bradycardia during tracheal suctioning. What is the most
immediate action?
A. Continue suctioning rapidly
B. Increase suction vacuum pressure
, C. Withdraw the catheter and oxygenate the patient
D. Administer atropine
🟢 C. Withdraw the catheter and oxygenate the patient
🔴 RATIONALE: Bradycardia during suctioning is likely a vagal response due to
hypoxemia; removing the stimulus and restoring oxygenation should be the first
intervention.
6. Which medication is a short-acting beta-agonist (SABA)?
A. Salmeterol
B. Albuterol
C. Ipratropium bromide
D. Fluticasone
🟢 B. Albuterol
🔴 RATIONALE: Albuterol is a rapid-onset, short-acting bronchodilator used for the
acute relief of bronchospasm.
7. What is the normal range for adult mean airway pressure (MAP) on a ventilator?
A. 5–10 cm H2O
B. 10–20 cm H2O
C. 20–30 cm H2O
D. 30–40 cm H2O
🟢 A. 5–10 cm H2O
🔴 RATIONALE: Typical mean airway pressures in stable adult patients on
mechanical ventilation generally range between 5 and 10 cm H2O.
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF.
Core Domains
- Mechanical Ventilation Management
- Arterial Blood Gas Analysis
- Pulmonary Function Testing
- Airway Management and Secretion Clearance
- Pharmacological Interventions
- Patient Assessment and Monitoring
- Neonatal and Pediatric Respiratory Care
- Legal, Ethical, and Professional Standards
Introduction
*The purpose of this examination is to rigorously evaluate the clinical competency and
Section One: Questions 1–100
,1. A patient on volume-controlled ventilation has an increase in peak inspiratory
pressure (PIP) but no change in the plateau pressure. What is the most likely
cause?
A. Pulmonary edema
B. Pneumothorax
C. Airway secretions
D. Decreased lung compliance
🟢 C. Airway secretions
🔴 RATIONALE: Increased PIP with an unchanged plateau pressure indicates
increased airway resistance, which is commonly caused by secretions,
bronchospasm, or an obstructed endotracheal tube.
2. Which of the following is the most appropriate initial FiO2 for a patient with severe
hypoxemia?
A. 0.21
B. 0.40
C. 0.60
D. 1.0
🟢 D. 1.0
🔴 RATIONALE: In cases of severe, life-threatening hypoxemia, the immediate
priority is to maximize oxygenation by delivering the highest possible concentration
of oxygen.
,3. During an arterial blood gas (ABG) analysis, the therapist observes a pH of 7.28,
PaCO2 of 55 mm Hg, and HCO3 of 24 mEq/L. How is this interpreted?
A. Respiratory acidosis
B. Metabolic acidosis
C. Respiratory alkalosis
D. Metabolic alkalosis
🟢 A. Respiratory acidosis
🔴 RATIONALE: A low pH combined with an elevated PaCO2 indicates an
uncompensated respiratory acidosis.
4. Which lung volume cannot be measured by simple spirometry?
A. Tidal volume
B. Inspiratory reserve volume
C. Residual volume
D. Expiratory reserve volume
🟢 C. Residual volume
🔴 RATIONALE: Residual volume represents air left in the lungs after maximal
expiration and requires indirect methods like helium dilution or body
plethysmography to measure.
5. A patient develops bradycardia during tracheal suctioning. What is the most
immediate action?
A. Continue suctioning rapidly
B. Increase suction vacuum pressure
, C. Withdraw the catheter and oxygenate the patient
D. Administer atropine
🟢 C. Withdraw the catheter and oxygenate the patient
🔴 RATIONALE: Bradycardia during suctioning is likely a vagal response due to
hypoxemia; removing the stimulus and restoring oxygenation should be the first
intervention.
6. Which medication is a short-acting beta-agonist (SABA)?
A. Salmeterol
B. Albuterol
C. Ipratropium bromide
D. Fluticasone
🟢 B. Albuterol
🔴 RATIONALE: Albuterol is a rapid-onset, short-acting bronchodilator used for the
acute relief of bronchospasm.
7. What is the normal range for adult mean airway pressure (MAP) on a ventilator?
A. 5–10 cm H2O
B. 10–20 cm H2O
C. 20–30 cm H2O
D. 30–40 cm H2O
🟢 A. 5–10 cm H2O
🔴 RATIONALE: Typical mean airway pressures in stable adult patients on
mechanical ventilation generally range between 5 and 10 cm H2O.
