TMC Exam Secure Comprehensive Therapist SAE
Prep- Practice Questions, Verified Answers & Clinical
Rationales 2026
This specialized study guide features high-yield practice questions, verified answers,
and comprehensive clinical rationales modeled after the Secure Comprehensive
Therapist Self-Assessment Examination (SAE). It covers advanced competencies
evaluated on the official licensing board track, including arterial blood gas (ABG) data
interpretation, advanced mechanical ventilation adjustments, airway management, and
cardiopulmonary pharmacology. Respiratory therapy candidates will master high-stakes
diagnostic decision-making, optimize patient assessment strategies, and refine critical
logic to confidently meet both low-cut and high-cut threshold scores.
1. A patient with a tracheostomy is being suctioned. The respiratory therapist
notes the heart rate drops from 88 to 52 bpm during the procedure. What should
the therapist do FIRST?
A. Continue suctioning until secretions are cleared
B. Stop suctioning and administer oxygen
C. Increase suction pressure
D. Instill normal saline into the airway
Answer: B. Stop suctioning and administer oxygen
Rationale: Vagal stimulation during suctioning can cause bradycardia. The therapist
should stop immediately, oxygenate the patient, and monitor until the heart rate returns
to baseline.
2. A patient receiving mechanical ventilation has a tidal volume of 500 mL, peak
inspiratory pressure of 35 cmH₂O, and plateau pressure of 15 cmH₂O. What is the
static compliance?
A. 25 mL/cmH₂O
B. 33 mL/cmH₂O
C. 50 mL/cmH₂O
D. 100 mL/cmH₂O
Answer: B. 33 mL/cmH₂O
,Rationale: Static compliance = Exhaled tidal volume / (Plateau pressure − PEEP).
Assuming PEEP of 0: = 33.3 mL/cmH₂O.
3. A patient with a pulmonary embolism is most likely to exhibit which of the
following on capnography?
A. Elevated end-tidal CO₂
B. Decreased end-tidal CO₂
C. Normal end-tidal CO₂
D. Absent waveform
Answer: B. Decreased end-tidal CO₂
Rationale: Pulmonary embolism increases dead space ventilation, reducing pulmonary
blood flow to ventilated alveoli, which decreases end-tidal CO₂.
4. A neonatal patient with respiratory distress syndrome is receiving mechanical
ventilation. Which of the following is the most appropriate initial tidal volume?
A. 3–6 mL/kg
B. 8–10 mL/kg
C. 10–12 mL/kg
D. 12–15 mL/kg
Answer: A. 3–6 mL/kg
Rationale: Lung-protective ventilation in neonates with RDS uses low tidal volumes of 3–6
mL/kg to prevent volutrauma and bronchopulmonary dysplasia.
5. A patient's spirometry results show: FVC 2.8 L (68% predicted), FEV₁ 1.2 L (45%
predicted), FEV₁/FVC ratio 43%. These findings are most consistent with:
,A. Restrictive lung disease
B. Obstructive lung disease
C. Normal pulmonary function
D. Upper airway obstruction
Answer: B. Obstructive lung disease
Rationale: An FEV₁/FVC ratio below 70% indicates obstructive lung disease. The reduced
FEV₁ and FVC with a low ratio are characteristic of COPD or asthma.
6. A patient is receiving heliox therapy. What is the primary benefit of using
heliox?
A. It increases oxygen delivery
B. It reduces turbulent flow and decreases work of breathing
C. It increases carbon dioxide elimination
D. It humidifies the airway
Answer: B. It reduces turbulent flow and decreases work of breathing
Rationale: Heliox is a low-density gas mixture that converts turbulent flow to laminar flow,
reducing airway resistance and work of breathing in upper airway obstruction.
7. A patient with a closed head injury has an intracranial pressure (ICP) of 22
mmHg. The physician orders hyperventilation. What is the target PaCO₂?
A. 25–30 mmHg
B. 30–35 mmHg
C. 35–45 mmHg
D. 45–50 mmHg
Answer: B. 30–35 mmHg
Rationale: Hyperventilation to a PaCO₂ of 30–35 mmHg causes cerebral vasoconstriction,
reducing cerebral blood volume and ICP. More aggressive hyperventilation (PaCO₂ < 25
mmHg) risks cerebral ischemia.
, 8. A patient is being evaluated for obstructive sleep apnea. Which test is the gold
standard for diagnosis?
A. Overnight pulse oximetry
B. Polysomnography
C. Multiple sleep latency test
D. Arterial blood gas analysis
Answer: B. Polysomnography
Rationale: Polysomnography is the gold standard for diagnosing obstructive sleep apnea,
measuring apnea-hypopnea index, oxygen saturation, and sleep stages.
9. A patient with COPD is prescribed tiotropium (Spiriva). What is the mechanism
of action?
A. Short-acting beta-2 agonist
B. Long-acting muscarinic antagonist
C. Inhaled corticosteroid
D. Leukotriene receptor antagonist
Answer: B. Long-acting muscarinic antagonist
Rationale: Tiotropium is a long-acting muscarinic antagonist (LAMA) that provides
bronchodilation for 24 hours, improving lung function and reducing exacerbations in
COPD.
10. A patient receiving volume-controlled ventilation has the following data: PIP
45 cmH₂O, Plateau pressure 32 cmH₂O, PEEP 5 cmH₂O, Inspiratory flow 60 L/min.
What is the airway resistance?
A. 10 cmH₂O/L/sec
B. 13 cmH₂O/L/sec
Prep- Practice Questions, Verified Answers & Clinical
Rationales 2026
This specialized study guide features high-yield practice questions, verified answers,
and comprehensive clinical rationales modeled after the Secure Comprehensive
Therapist Self-Assessment Examination (SAE). It covers advanced competencies
evaluated on the official licensing board track, including arterial blood gas (ABG) data
interpretation, advanced mechanical ventilation adjustments, airway management, and
cardiopulmonary pharmacology. Respiratory therapy candidates will master high-stakes
diagnostic decision-making, optimize patient assessment strategies, and refine critical
logic to confidently meet both low-cut and high-cut threshold scores.
1. A patient with a tracheostomy is being suctioned. The respiratory therapist
notes the heart rate drops from 88 to 52 bpm during the procedure. What should
the therapist do FIRST?
A. Continue suctioning until secretions are cleared
B. Stop suctioning and administer oxygen
C. Increase suction pressure
D. Instill normal saline into the airway
Answer: B. Stop suctioning and administer oxygen
Rationale: Vagal stimulation during suctioning can cause bradycardia. The therapist
should stop immediately, oxygenate the patient, and monitor until the heart rate returns
to baseline.
2. A patient receiving mechanical ventilation has a tidal volume of 500 mL, peak
inspiratory pressure of 35 cmH₂O, and plateau pressure of 15 cmH₂O. What is the
static compliance?
A. 25 mL/cmH₂O
B. 33 mL/cmH₂O
C. 50 mL/cmH₂O
D. 100 mL/cmH₂O
Answer: B. 33 mL/cmH₂O
,Rationale: Static compliance = Exhaled tidal volume / (Plateau pressure − PEEP).
Assuming PEEP of 0: = 33.3 mL/cmH₂O.
3. A patient with a pulmonary embolism is most likely to exhibit which of the
following on capnography?
A. Elevated end-tidal CO₂
B. Decreased end-tidal CO₂
C. Normal end-tidal CO₂
D. Absent waveform
Answer: B. Decreased end-tidal CO₂
Rationale: Pulmonary embolism increases dead space ventilation, reducing pulmonary
blood flow to ventilated alveoli, which decreases end-tidal CO₂.
4. A neonatal patient with respiratory distress syndrome is receiving mechanical
ventilation. Which of the following is the most appropriate initial tidal volume?
A. 3–6 mL/kg
B. 8–10 mL/kg
C. 10–12 mL/kg
D. 12–15 mL/kg
Answer: A. 3–6 mL/kg
Rationale: Lung-protective ventilation in neonates with RDS uses low tidal volumes of 3–6
mL/kg to prevent volutrauma and bronchopulmonary dysplasia.
5. A patient's spirometry results show: FVC 2.8 L (68% predicted), FEV₁ 1.2 L (45%
predicted), FEV₁/FVC ratio 43%. These findings are most consistent with:
,A. Restrictive lung disease
B. Obstructive lung disease
C. Normal pulmonary function
D. Upper airway obstruction
Answer: B. Obstructive lung disease
Rationale: An FEV₁/FVC ratio below 70% indicates obstructive lung disease. The reduced
FEV₁ and FVC with a low ratio are characteristic of COPD or asthma.
6. A patient is receiving heliox therapy. What is the primary benefit of using
heliox?
A. It increases oxygen delivery
B. It reduces turbulent flow and decreases work of breathing
C. It increases carbon dioxide elimination
D. It humidifies the airway
Answer: B. It reduces turbulent flow and decreases work of breathing
Rationale: Heliox is a low-density gas mixture that converts turbulent flow to laminar flow,
reducing airway resistance and work of breathing in upper airway obstruction.
7. A patient with a closed head injury has an intracranial pressure (ICP) of 22
mmHg. The physician orders hyperventilation. What is the target PaCO₂?
A. 25–30 mmHg
B. 30–35 mmHg
C. 35–45 mmHg
D. 45–50 mmHg
Answer: B. 30–35 mmHg
Rationale: Hyperventilation to a PaCO₂ of 30–35 mmHg causes cerebral vasoconstriction,
reducing cerebral blood volume and ICP. More aggressive hyperventilation (PaCO₂ < 25
mmHg) risks cerebral ischemia.
, 8. A patient is being evaluated for obstructive sleep apnea. Which test is the gold
standard for diagnosis?
A. Overnight pulse oximetry
B. Polysomnography
C. Multiple sleep latency test
D. Arterial blood gas analysis
Answer: B. Polysomnography
Rationale: Polysomnography is the gold standard for diagnosing obstructive sleep apnea,
measuring apnea-hypopnea index, oxygen saturation, and sleep stages.
9. A patient with COPD is prescribed tiotropium (Spiriva). What is the mechanism
of action?
A. Short-acting beta-2 agonist
B. Long-acting muscarinic antagonist
C. Inhaled corticosteroid
D. Leukotriene receptor antagonist
Answer: B. Long-acting muscarinic antagonist
Rationale: Tiotropium is a long-acting muscarinic antagonist (LAMA) that provides
bronchodilation for 24 hours, improving lung function and reducing exacerbations in
COPD.
10. A patient receiving volume-controlled ventilation has the following data: PIP
45 cmH₂O, Plateau pressure 32 cmH₂O, PEEP 5 cmH₂O, Inspiratory flow 60 L/min.
What is the airway resistance?
A. 10 cmH₂O/L/sec
B. 13 cmH₂O/L/sec
