TMC Exam Secure Comprehensive Therapist SAE
Prep- Practice Questions, Verified Answers & Clinical
Rationales 2026-2026
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 respiratory therapist is calibrating a spirometer with a 3.0 L super syringe. The
recorded volumes are 2.85 L, 2.80 L, and 2.80 L. Which of the following is the
MOST likely explanation?
A. The syringe is defective
B. The spirometer is accurate
C. The plunger was advanced too slowly
D. There is a leak in the spirometer
Answer: D. There is a leak in the spirometer
Rationale: Consistently low volumes across repeated trials with a calibrated syringe
indicate a leak in the spirometer system or a calibration error. The spirometer should be
checked for leaks before use .
2. Which of the following is an indication for high-frequency jet ventilation?
A. Bronchopleural fistula
B. Wilson-Mikity syndrome
C. Necrotizing lesion of the right lung
D. Centrilobular emphysema
Answer: A. Bronchopleural fistula
,Rationale: High-frequency jet ventilation delivers small tidal volumes at high frequencies
with low airway pressures, making it ideal for patients with bronchopleural fistula where
conventional ventilation would worsen the air leak .
3. A 44-week gestational age infant delivered via C-section is gasping, grunting,
and has tachycardia and tachypnea. Apgar scores are 4 at 1 minute and 5 at 5
minutes. This infant is MOST likely suffering from:
A. Transient tachypnea of the newborn
B. Meconium aspiration
C. Bronchopulmonary dysplasia
D. Apnea of prematurity
Answer: B. Meconium aspiration
Rationale: The combination of gasping, grunting, tachypnea, and low Apgar scores in a
post-term infant (44 weeks) is classic for meconium aspiration syndrome, which occurs
when meconium-stained amniotic fluid is aspirated into the lungs .
4. What is the normal VD/VT ratio for a patient breathing room air?
A. 5–15%
B. 20–40%
C. 45–55%
D. 65–75%
Answer: B. 20–40%
Rationale: The normal dead space to tidal volume ratio (VD/VT) is approximately 20–40%
in healthy individuals. Values above 60% indicate significant dead space ventilation and
impaired gas exchange .
,5. A heat moisture exchanger (HME) is indicated for humidification in which of the
following situations?
A. Mechanical ventilation in a long-term care facility
B. Transport to a tertiary care center
C. Patient with tenacious secretions
D. Delivery of aerosolized bronchodilators
Answer: B. Transport to a tertiary care center
Rationale: HMEs are passive humidifiers that capture exhaled heat and moisture, making
them ideal for short-term use during patient transport. They are not recommended for
patients with thick secretions or during aerosol drug delivery .
6. A patient with a tension pneumothorax presents with absent breath sounds on
the left, hyperresonant percussion note, tracheal shift to the right, HR 45/min, RR
30/min, and BP 60/40 mmHg. What action should the therapist recommend FIRST?
A. Obtain a chest X-ray
B. Needle aspirate the 2nd left intercostal space
C. Administer IV fluids
D. Insert a chest tube
Answer: B. Needle aspirate the 2nd left intercostal space
Rationale: This is a medical emergency. Immediate needle decompression at the 2nd
intercostal space, mid-clavicular line on the affected side, is the priority to relieve pressure
before chest X-ray or chest tube insertion .
7. What increase in FEV₁ during post-bronchodilator spirometry confirms
reversibility of an obstructive pattern?
A. 10% and 150 mL
B. 12% and 200 mL
C. 15% and 250 mL
D. 20% and 300 mL
, Answer: B. 12% and 200 mL
Rationale: A significant increase in FEV₁ of ≥12% and ≥200 mL after bronchodilator
administration confirms reversible airway obstruction, characteristic of asthma .
8. A patient on volume-controlled ventilation demonstrates auto-PEEP on
ventilator graphics. Which controls, when adjusted independently, would increase
expiratory time?
1. Tidal volume
2. Respiratory rate
3. Inspiratory flow
4. Sensitivity
A. 1 and 4 only
B. 2 and 3 only
C. 1, 2, and 3 only
D. 1, 2, 3, and 4
Answer: C. 1, 2, and 3 only
Rationale: Increasing tidal volume prolongs inspiratory time, decreasing respiratory rate
allows more time for exhalation, and increasing inspiratory flow shortens inspiratory time.
Sensitivity does not affect expiratory time .
9. A pulse oximeter provides an accurate indication of a patient's oxygenation
status in which of the following situations?
1. Polycythemia
2. Pulmonary hypertension
3. Congestive heart failure
4. Carbon monoxide poisoning
A. 1, 2, and 3 only
B. 1, 2, and 4 only
Prep- Practice Questions, Verified Answers & Clinical
Rationales 2026-2026
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 respiratory therapist is calibrating a spirometer with a 3.0 L super syringe. The
recorded volumes are 2.85 L, 2.80 L, and 2.80 L. Which of the following is the
MOST likely explanation?
A. The syringe is defective
B. The spirometer is accurate
C. The plunger was advanced too slowly
D. There is a leak in the spirometer
Answer: D. There is a leak in the spirometer
Rationale: Consistently low volumes across repeated trials with a calibrated syringe
indicate a leak in the spirometer system or a calibration error. The spirometer should be
checked for leaks before use .
2. Which of the following is an indication for high-frequency jet ventilation?
A. Bronchopleural fistula
B. Wilson-Mikity syndrome
C. Necrotizing lesion of the right lung
D. Centrilobular emphysema
Answer: A. Bronchopleural fistula
,Rationale: High-frequency jet ventilation delivers small tidal volumes at high frequencies
with low airway pressures, making it ideal for patients with bronchopleural fistula where
conventional ventilation would worsen the air leak .
3. A 44-week gestational age infant delivered via C-section is gasping, grunting,
and has tachycardia and tachypnea. Apgar scores are 4 at 1 minute and 5 at 5
minutes. This infant is MOST likely suffering from:
A. Transient tachypnea of the newborn
B. Meconium aspiration
C. Bronchopulmonary dysplasia
D. Apnea of prematurity
Answer: B. Meconium aspiration
Rationale: The combination of gasping, grunting, tachypnea, and low Apgar scores in a
post-term infant (44 weeks) is classic for meconium aspiration syndrome, which occurs
when meconium-stained amniotic fluid is aspirated into the lungs .
4. What is the normal VD/VT ratio for a patient breathing room air?
A. 5–15%
B. 20–40%
C. 45–55%
D. 65–75%
Answer: B. 20–40%
Rationale: The normal dead space to tidal volume ratio (VD/VT) is approximately 20–40%
in healthy individuals. Values above 60% indicate significant dead space ventilation and
impaired gas exchange .
,5. A heat moisture exchanger (HME) is indicated for humidification in which of the
following situations?
A. Mechanical ventilation in a long-term care facility
B. Transport to a tertiary care center
C. Patient with tenacious secretions
D. Delivery of aerosolized bronchodilators
Answer: B. Transport to a tertiary care center
Rationale: HMEs are passive humidifiers that capture exhaled heat and moisture, making
them ideal for short-term use during patient transport. They are not recommended for
patients with thick secretions or during aerosol drug delivery .
6. A patient with a tension pneumothorax presents with absent breath sounds on
the left, hyperresonant percussion note, tracheal shift to the right, HR 45/min, RR
30/min, and BP 60/40 mmHg. What action should the therapist recommend FIRST?
A. Obtain a chest X-ray
B. Needle aspirate the 2nd left intercostal space
C. Administer IV fluids
D. Insert a chest tube
Answer: B. Needle aspirate the 2nd left intercostal space
Rationale: This is a medical emergency. Immediate needle decompression at the 2nd
intercostal space, mid-clavicular line on the affected side, is the priority to relieve pressure
before chest X-ray or chest tube insertion .
7. What increase in FEV₁ during post-bronchodilator spirometry confirms
reversibility of an obstructive pattern?
A. 10% and 150 mL
B. 12% and 200 mL
C. 15% and 250 mL
D. 20% and 300 mL
, Answer: B. 12% and 200 mL
Rationale: A significant increase in FEV₁ of ≥12% and ≥200 mL after bronchodilator
administration confirms reversible airway obstruction, characteristic of asthma .
8. A patient on volume-controlled ventilation demonstrates auto-PEEP on
ventilator graphics. Which controls, when adjusted independently, would increase
expiratory time?
1. Tidal volume
2. Respiratory rate
3. Inspiratory flow
4. Sensitivity
A. 1 and 4 only
B. 2 and 3 only
C. 1, 2, and 3 only
D. 1, 2, 3, and 4
Answer: C. 1, 2, and 3 only
Rationale: Increasing tidal volume prolongs inspiratory time, decreasing respiratory rate
allows more time for exhalation, and increasing inspiratory flow shortens inspiratory time.
Sensitivity does not affect expiratory time .
9. A pulse oximeter provides an accurate indication of a patient's oxygenation
status in which of the following situations?
1. Polycythemia
2. Pulmonary hypertension
3. Congestive heart failure
4. Carbon monoxide poisoning
A. 1, 2, and 3 only
B. 1, 2, and 4 only
