TMC Exam Secure Comprehensive Therapist SAE
Prep: Practice Questions, Verified Answers & Clinical
Rationales
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.
Section 1: Patient Data Evaluation & Recommendations (Questions 1–
50)
1. A respiratory therapist is assisting a physician with endotracheal intubation.
Which of the following should be used initially to confirm tracheal intubation?
A. Cm marking of the endotracheal tube
B. Observable condensation in the tube
C. Pulse oximetry
D. Colorimetric capnography
Answer: D. Colorimetric capnography
Rationale: Colorimetric capnography assesses the presence of CO₂ and provides
confirmation of tracheal intubation when CO₂ is detected. It is the most reliable initial
bedside method for confirming tube placement.
,2. A 62-year-old COPD patient has the following ABG on 2 L/min nasal cannula: pH
7.31, PaCO₂ 58 mmHg, PaO₂ 62 mmHg, HCO₃⁻ 29 mEq/L. What is the primary acid-
base disorder?
A. Metabolic alkalosis
B. Acute respiratory acidosis
C. Chronic respiratory acidosis with acute exacerbation
D. Combined metabolic and respiratory acidosis
Answer: C. Chronic respiratory acidosis with acute exacerbation
Rationale: The pH is acidic (7.31), PaCO₂ is elevated (58 mmHg) indicating respiratory
acidosis, and HCO₃⁻ is elevated (29 mEq/L) suggesting renal compensation. The elevated
bicarbonate indicates chronicity, but the pH is still below 7.35, indicating an acute
exacerbation.
3. A patient's ABG results on room air are: pH 7.48, PaCO₂ 30 mmHg, PaO₂ 88
mmHg, HCO₃⁻ 22 mEq/L. Which condition is MOST consistent with these values?
A. Diabetic ketoacidosis
B. Salicylate toxicity
C. Pulmonary embolism
D. Anxiety with hyperventilation
Answer: D. Anxiety with hyperventilation
Rationale: The ABG shows respiratory alkalosis: pH > 7.45 (7.48), PaCO₂ < 35 mmHg (30
mmHg), and normal HCO₃⁻ (22 mEq/L). Anxiety with hyperventilation is a classic cause of
acute respiratory alkalosis.
4. A patient presenting with a right-sided pleural effusion requires confirmation of
the etiology of the fluid. Which procedure should the respiratory therapist
recommend?
A. Diagnostic bronchoscopy
B. Sputum culture and Gram stain
,C. Pleurodesis
D. Thoracentesis
Answer: D. Thoracentesis
Rationale: Thoracentesis involves inserting a needle or catheter into the pleural space to
drain fluid for diagnostic evaluation and therapeutic relief. Bronchoscopy targets
intrabronchial lesions, while pleurodesis prevents recurrent effusions rather than
diagnosing them.
5. A patient with a 45% pneumothorax and SpO₂ of 92% on 35% oxygen requires
what recommendation?
A. Increase the patient's inspired oxygen percentage
B. Insert a pleural chest tube
C. Have the patient begin flutter valve therapy
D. Insert a mediastinal chest tube
Answer: B. Insert a pleural chest tube
Rationale: A pleural chest tube should be inserted into the affected lung to remove the air
so the lung can reexpand. Increasing oxygen alone will not correct the underlying life-
threatening problem.
6. A patient's chest X-ray reveals air bronchograms. This finding is most consistent
with which condition?
A. Pneumothorax
B. Atelectasis
C. Pneumonia
D. Pleural effusion
Answer: C. Pneumonia
, Rationale: Air bronchograms occur when air-filled bronchi are visible against a
background of opaque (fluid-filled or consolidated) lung tissue. This finding is classic for
pneumonia (alveolar consolidation) and can also be seen in pulmonary edema.
7. A 68-year-old male with COPD presents with increased shortness of breath. ABG
results show: pH 7.32, PaCO₂ 68 mmHg, PaO₂ 55 mmHg, HCO₃⁻ 32 mEq/L. What is
the most appropriate interpretation?
A. Acute respiratory acidosis with metabolic compensation
B. Chronic respiratory acidosis with metabolic compensation
C. Acute respiratory alkalosis
D. Metabolic acidosis with respiratory compensation
Answer: B. Chronic respiratory acidosis with metabolic compensation
Rationale: The pH is low (acidemia) and PaCO₂ is elevated (>45 mmHg), indicating
respiratory acidosis. The HCO₃⁻ is significantly elevated (32 mEq/L), suggesting chronic
respiratory acidosis where the kidneys have had time to retain bicarbonate.
8. Which of the following ABG results indicates uncompensated metabolic
alkalosis?
A. pH 7.50, PaCO₂ 48, HCO₃⁻ 34
B. pH 7.32, PaCO₂ 38, HCO₃⁻ 18
C. pH 7.48, PaCO₂ 42, HCO₃⁻ 32
D. pH 7.35, PaCO₂ 55, HCO₃⁻ 30
Answer: C. pH 7.48, PaCO₂ 42, HCO₃⁻ 32
Rationale: pH is elevated (>7.45) indicating alkalemia. HCO₃⁻ is elevated (>26 mEq/L)
indicating metabolic alkalosis. PaCO₂ is normal (35-45 mmHg), meaning there is no
respiratory compensation.
Prep: Practice Questions, Verified Answers & Clinical
Rationales
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.
Section 1: Patient Data Evaluation & Recommendations (Questions 1–
50)
1. A respiratory therapist is assisting a physician with endotracheal intubation.
Which of the following should be used initially to confirm tracheal intubation?
A. Cm marking of the endotracheal tube
B. Observable condensation in the tube
C. Pulse oximetry
D. Colorimetric capnography
Answer: D. Colorimetric capnography
Rationale: Colorimetric capnography assesses the presence of CO₂ and provides
confirmation of tracheal intubation when CO₂ is detected. It is the most reliable initial
bedside method for confirming tube placement.
,2. A 62-year-old COPD patient has the following ABG on 2 L/min nasal cannula: pH
7.31, PaCO₂ 58 mmHg, PaO₂ 62 mmHg, HCO₃⁻ 29 mEq/L. What is the primary acid-
base disorder?
A. Metabolic alkalosis
B. Acute respiratory acidosis
C. Chronic respiratory acidosis with acute exacerbation
D. Combined metabolic and respiratory acidosis
Answer: C. Chronic respiratory acidosis with acute exacerbation
Rationale: The pH is acidic (7.31), PaCO₂ is elevated (58 mmHg) indicating respiratory
acidosis, and HCO₃⁻ is elevated (29 mEq/L) suggesting renal compensation. The elevated
bicarbonate indicates chronicity, but the pH is still below 7.35, indicating an acute
exacerbation.
3. A patient's ABG results on room air are: pH 7.48, PaCO₂ 30 mmHg, PaO₂ 88
mmHg, HCO₃⁻ 22 mEq/L. Which condition is MOST consistent with these values?
A. Diabetic ketoacidosis
B. Salicylate toxicity
C. Pulmonary embolism
D. Anxiety with hyperventilation
Answer: D. Anxiety with hyperventilation
Rationale: The ABG shows respiratory alkalosis: pH > 7.45 (7.48), PaCO₂ < 35 mmHg (30
mmHg), and normal HCO₃⁻ (22 mEq/L). Anxiety with hyperventilation is a classic cause of
acute respiratory alkalosis.
4. A patient presenting with a right-sided pleural effusion requires confirmation of
the etiology of the fluid. Which procedure should the respiratory therapist
recommend?
A. Diagnostic bronchoscopy
B. Sputum culture and Gram stain
,C. Pleurodesis
D. Thoracentesis
Answer: D. Thoracentesis
Rationale: Thoracentesis involves inserting a needle or catheter into the pleural space to
drain fluid for diagnostic evaluation and therapeutic relief. Bronchoscopy targets
intrabronchial lesions, while pleurodesis prevents recurrent effusions rather than
diagnosing them.
5. A patient with a 45% pneumothorax and SpO₂ of 92% on 35% oxygen requires
what recommendation?
A. Increase the patient's inspired oxygen percentage
B. Insert a pleural chest tube
C. Have the patient begin flutter valve therapy
D. Insert a mediastinal chest tube
Answer: B. Insert a pleural chest tube
Rationale: A pleural chest tube should be inserted into the affected lung to remove the air
so the lung can reexpand. Increasing oxygen alone will not correct the underlying life-
threatening problem.
6. A patient's chest X-ray reveals air bronchograms. This finding is most consistent
with which condition?
A. Pneumothorax
B. Atelectasis
C. Pneumonia
D. Pleural effusion
Answer: C. Pneumonia
, Rationale: Air bronchograms occur when air-filled bronchi are visible against a
background of opaque (fluid-filled or consolidated) lung tissue. This finding is classic for
pneumonia (alveolar consolidation) and can also be seen in pulmonary edema.
7. A 68-year-old male with COPD presents with increased shortness of breath. ABG
results show: pH 7.32, PaCO₂ 68 mmHg, PaO₂ 55 mmHg, HCO₃⁻ 32 mEq/L. What is
the most appropriate interpretation?
A. Acute respiratory acidosis with metabolic compensation
B. Chronic respiratory acidosis with metabolic compensation
C. Acute respiratory alkalosis
D. Metabolic acidosis with respiratory compensation
Answer: B. Chronic respiratory acidosis with metabolic compensation
Rationale: The pH is low (acidemia) and PaCO₂ is elevated (>45 mmHg), indicating
respiratory acidosis. The HCO₃⁻ is significantly elevated (32 mEq/L), suggesting chronic
respiratory acidosis where the kidneys have had time to retain bicarbonate.
8. Which of the following ABG results indicates uncompensated metabolic
alkalosis?
A. pH 7.50, PaCO₂ 48, HCO₃⁻ 34
B. pH 7.32, PaCO₂ 38, HCO₃⁻ 18
C. pH 7.48, PaCO₂ 42, HCO₃⁻ 32
D. pH 7.35, PaCO₂ 55, HCO₃⁻ 30
Answer: C. pH 7.48, PaCO₂ 42, HCO₃⁻ 32
Rationale: pH is elevated (>7.45) indicating alkalemia. HCO₃⁻ is elevated (>26 mEq/L)
indicating metabolic alkalosis. PaCO₂ is normal (35-45 mmHg), meaning there is no
respiratory compensation.
