2026 Paramedic Airway Exam Prep: Practice
Questions with Answer Rationales —
Advanced Airway Management, Intubation,
Ventilation, Oxygenation & Respiratory
Emergencies Study Guide
SECTION 1: AIRWAY ANATOMY AND PHYSIOLOGY (Questions 1–15)
Question 1
Which structure is the most common site of foreign body airway obstruction in
adults?
A. Trachea
B. Bronchus
C. Larynx
D. Pharynx
Answer: C
Rationale: The larynx, specifically the glottic opening, is the narrowest part of the
adult airway. Foreign bodies often lodge at the vocal cords or in the laryngeal inlet,
causing complete or partial obstruction. The pharynx is wider and less likely to
trap objects.
Question 2
The primary muscle of inspiration in a resting adult is the:
A. Abdominal muscles
B. Sternocleidomastoid
C. Diaphragm
D. Intercostals
Answer: C
,Rationale: The diaphragm is the primary inspiratory muscle. It contracts and
flattens, increasing thoracic volume and creating negative pressure. Accessory
muscles (sternocleidomastoid, scalenes, intercostals) are recruited during labored
breathing or respiratory distress.
Question 3
Which of the following describes bradypnea with hypoventilation?
A. Respiratory rate greater than 20 with deep tidal volume
B. Respiratory rate less than 12 with shallow tidal volume
C. Respiratory rate of 16 with normal tidal volume
D. Respiratory rate of 24 with accessory muscle use
Answer: B
Rationale: Bradypnea is a respiratory rate less than 12 breaths per minute.
Hypoventilation means inadequate alveolar ventilation, often due to shallow tidal
volume. This combination leads to hypercapnia and hypoxia.
Question 4
What is the narrowest portion of the pediatric airway?
A. Glottic opening
B. Cricoid ring
C. Trachea
D. Epiglottis
Answer: B
Rationale: In pediatric patients, the cricoid ring is the narrowest portion of the
airway, unlike adults where the glottic opening is narrowest. This anatomic
difference is critical when selecting airway adjuncts and endotracheal tubes.
Question 5
Which of the following is a sign of increased work of breathing?
A. Respiratory rate of 14 breaths per minute
B. Clear and equal breath sounds
,C. Accessory muscle use
D. Oxygen saturation of 98%
Answer: C
Rationale: Accessory muscle use (e.g., neck and intercostal muscle retractions) is
a sign of increased work of breathing and impending respiratory failure. Normal
respiratory rate (A) and clear breath sounds (B) are not signs of distress.
Question 6
The physiological dead space in a normal adult is approximately:
A. 50 mL
B. 150 mL
C. 300 mL
D. 500 mL
Answer: B
Rationale: Anatomical dead space (the volume of air in the conducting airways
that does not participate in gas exchange) is approximately 150 mL in a normal
adult, or about 2 mL/kg.
Question 7
Which of the following best describes hypoxia?
A. Inadequate oxygen delivery to tissues
B. Inadequate carbon dioxide elimination
C. Increased respiratory rate
D. Normal oxygen saturation
Answer: A
Rationale: Hypoxia is inadequate oxygen delivery to tissues. Hypercapnia (B) is
inadequate carbon dioxide elimination. Tachypnea (C) is a compensatory
mechanism. Normal oxygen saturation (D) does not rule out tissue hypoxia.
, Question 8
Which of the following is the primary stimulus for breathing in a healthy adult?
A. Hypoxia
B. Hypercapnia
C. Acidosis
D. Alkalosis
Answer: B
Rationale: In healthy adults, the primary stimulus for breathing is hypercapnia
(elevated CO2 levels), detected by central chemoreceptors in the brainstem.
Hypoxia (A) becomes the primary drive in patients with chronic CO2 retention
(e.g., severe COPD).
Question 9
What is the normal range for end-tidal CO2 (EtCO2)?
A. 20–30 mmHg
B. 35–45 mmHg
C. 50–60 mmHg
D. 60–70 mmHg
Answer: B
Rationale: Normal EtCO2 values are 35–45 mmHg. EtCO2 reflects ventilation
and cardiac output, and is a critical monitoring parameter for confirming advanced
airway placement and assessing CPR quality.
Question 10
Which of the following structures is part of the lower airway?
A. Oropharynx
B. Larynx
C. Trachea
D. Nasopharynx
Answer: C
Questions with Answer Rationales —
Advanced Airway Management, Intubation,
Ventilation, Oxygenation & Respiratory
Emergencies Study Guide
SECTION 1: AIRWAY ANATOMY AND PHYSIOLOGY (Questions 1–15)
Question 1
Which structure is the most common site of foreign body airway obstruction in
adults?
A. Trachea
B. Bronchus
C. Larynx
D. Pharynx
Answer: C
Rationale: The larynx, specifically the glottic opening, is the narrowest part of the
adult airway. Foreign bodies often lodge at the vocal cords or in the laryngeal inlet,
causing complete or partial obstruction. The pharynx is wider and less likely to
trap objects.
Question 2
The primary muscle of inspiration in a resting adult is the:
A. Abdominal muscles
B. Sternocleidomastoid
C. Diaphragm
D. Intercostals
Answer: C
,Rationale: The diaphragm is the primary inspiratory muscle. It contracts and
flattens, increasing thoracic volume and creating negative pressure. Accessory
muscles (sternocleidomastoid, scalenes, intercostals) are recruited during labored
breathing or respiratory distress.
Question 3
Which of the following describes bradypnea with hypoventilation?
A. Respiratory rate greater than 20 with deep tidal volume
B. Respiratory rate less than 12 with shallow tidal volume
C. Respiratory rate of 16 with normal tidal volume
D. Respiratory rate of 24 with accessory muscle use
Answer: B
Rationale: Bradypnea is a respiratory rate less than 12 breaths per minute.
Hypoventilation means inadequate alveolar ventilation, often due to shallow tidal
volume. This combination leads to hypercapnia and hypoxia.
Question 4
What is the narrowest portion of the pediatric airway?
A. Glottic opening
B. Cricoid ring
C. Trachea
D. Epiglottis
Answer: B
Rationale: In pediatric patients, the cricoid ring is the narrowest portion of the
airway, unlike adults where the glottic opening is narrowest. This anatomic
difference is critical when selecting airway adjuncts and endotracheal tubes.
Question 5
Which of the following is a sign of increased work of breathing?
A. Respiratory rate of 14 breaths per minute
B. Clear and equal breath sounds
,C. Accessory muscle use
D. Oxygen saturation of 98%
Answer: C
Rationale: Accessory muscle use (e.g., neck and intercostal muscle retractions) is
a sign of increased work of breathing and impending respiratory failure. Normal
respiratory rate (A) and clear breath sounds (B) are not signs of distress.
Question 6
The physiological dead space in a normal adult is approximately:
A. 50 mL
B. 150 mL
C. 300 mL
D. 500 mL
Answer: B
Rationale: Anatomical dead space (the volume of air in the conducting airways
that does not participate in gas exchange) is approximately 150 mL in a normal
adult, or about 2 mL/kg.
Question 7
Which of the following best describes hypoxia?
A. Inadequate oxygen delivery to tissues
B. Inadequate carbon dioxide elimination
C. Increased respiratory rate
D. Normal oxygen saturation
Answer: A
Rationale: Hypoxia is inadequate oxygen delivery to tissues. Hypercapnia (B) is
inadequate carbon dioxide elimination. Tachypnea (C) is a compensatory
mechanism. Normal oxygen saturation (D) does not rule out tissue hypoxia.
, Question 8
Which of the following is the primary stimulus for breathing in a healthy adult?
A. Hypoxia
B. Hypercapnia
C. Acidosis
D. Alkalosis
Answer: B
Rationale: In healthy adults, the primary stimulus for breathing is hypercapnia
(elevated CO2 levels), detected by central chemoreceptors in the brainstem.
Hypoxia (A) becomes the primary drive in patients with chronic CO2 retention
(e.g., severe COPD).
Question 9
What is the normal range for end-tidal CO2 (EtCO2)?
A. 20–30 mmHg
B. 35–45 mmHg
C. 50–60 mmHg
D. 60–70 mmHg
Answer: B
Rationale: Normal EtCO2 values are 35–45 mmHg. EtCO2 reflects ventilation
and cardiac output, and is a critical monitoring parameter for confirming advanced
airway placement and assessing CPR quality.
Question 10
Which of the following structures is part of the lower airway?
A. Oropharynx
B. Larynx
C. Trachea
D. Nasopharynx
Answer: C
