Air Methods Critical Care Exam 2026 - Latest
Exam Questions with Verified Correct Solutions
and Rationales - Already Graded A+
1. What is the most reliable method of confirming and monitoring correct placement of an
endotracheal (ET) tube?
Correct Answer: Continuous waveform capnography. ✓
Rationale: Continuous waveform capnography provides real-time confirmation of ET tube
placement by detecting exhaled carbon dioxide. It is more reliable than auscultation or
colorimetric devices because it continuously monitors for displacement.
2. What does the upper airway consist of?
Correct Answer: Nose, mouth, jaw, oral cavity, pharynx, and larynx. ✓
Rationale: The upper airway extends from the nose and mouth to the larynx. It functions to
warm, humidify, and filter inspired air while also facilitating speech and swallowing.
3. What is anatomical dead space, and where is it located?
Correct Answer: From the nose to the terminal bronchioles; approximately 2 mL/kg of inspired
tidal volume. No gas exchange occurs here. ✓
Rationale: Anatomical dead space is the volume of the conducting airways where no gas
exchange takes place. It includes the nose, pharynx, trachea, bronchi, and terminal bronchioles.
4. What is the cricothyroid membrane, and what procedure is performed there?
Correct Answer: The avascular structure between the thyroid and cricoid cartilages; site of
cricothyrotomy (emergency airway opening). ✓
Rationale: The cricothyroid membrane is easily palpable and avascular, making it the preferred
site for emergency surgical airway access when endotracheal intubation is impossible.
5. A PaCO₂ greater than 45 mmHg indicates what condition?
Correct Answer: C. Respiratory acidosis. ✓
Rationale: PaCO₂ >45 mmHg indicates hypercapnia due to alveolar hypoventilation, causing
pg. 1
,respiratory acidosis (pH <7.35). Causes include COPD, opioid overdose, and neuromuscular
disease.
6. What is the normal range for PaCO₂?
Correct Answer: 35-45 mm Hg. Less than 35 likely means hyperventilation (respiratory
alkalosis). ✓
Rationale: Normal PaCO₂ is maintained by alveolar ventilation. Hyperventilation decreases
PaCO₂ (respiratory alkalosis); hypoventilation increases PaCO₂ (respiratory acidosis).
7. A patient presents with tracheal deviation away from the affected side, decreased breath
sounds, and hyperresonance. What is happening?
Correct Answer: Tension pneumothorax. ✓
Rationale: Tension pneumothorax causes air trapping in the pleural space, shifting the
mediastinum to the opposite side. Tracheal deviation away from the affected side is a late but
classic sign.
8. In a tension pneumothorax, tracheal deviation goes in what direction?
Correct Answer: Away from the affected side. ✓
Rationale: Increased intrapleural pressure on the affected side pushes the trachea and
mediastinum toward the contralateral side, causing obstructive shock and requiring immediate
decompression.
9. What is the normal mean pulmonary artery pressure (PAP)?
Correct Answer: 10-20 mmHg. ✓
Rationale: *Normal mean PAP is 10-20 mmHg. Pulmonary hypertension is diagnosed when
mean PAP exceeds 20 mmHg at rest.*
10. Pulmonary hypertension is a mean pulmonary artery pressure greater than what value?
Correct Answer: Greater than 20 mmHg. ✓
Rationale: The hemodynamic definition of pulmonary hypertension is a resting mean PAP >20
mmHg confirmed by right heart catheterization.
pg. 2
, 11. What is primary pulmonary hypertension?
Correct Answer: Idiopathic genetic disorder caused by abnormal structure of the pulmonary
blood vessels. ✓
Rationale: Primary (idiopathic) pulmonary hypertension is a rare, progressive disorder with no
identifiable cause, though some cases are linked to genetic mutations (BMPR2).
12. Name three causes of secondary pulmonary hypertension.
Correct Answer: 1. Passive PH (back pressure from mitral stenosis, LV systolic failure); 2.
Active PH (constriction from increased volume, e.g., congenital heart disease); 3. Obstruction
(chronic recurrent pulmonary embolism). ✓
Rationale: Secondary pulmonary hypertension results from underlying conditions. Passive is
post-capillary, active is pre-capillary from increased flow, and obstructive is from mechanical
blockage.
13. What are the resuscitation priorities for a pregnant patient with trauma?
Correct Answer: Resuscitation priorities are the same as non-pregnant patients. The best way to
take care of the baby is to take care of the mother. ✓
Rationale: Maternal stabilization optimizes fetal outcomes. Prioritize airway, breathing,
circulation, and hemorrhage control. Fetal survival depends on maternal perfusion and
oxygenation.
14. What is the most common cause of maternal injury?
Correct Answer: Blunt trauma caused by motor vehicle collision (MVC). Second is blunt
trauma from falls; third is violence. ✓
Rationale: MVCs account for the majority of traumatic injuries during pregnancy. Proper
seatbelt use (lap belt below uterus, shoulder belt between breasts) reduces risk.
15. Why is fetal distress an early sign of maternal distress?
Correct Answer: Catecholamine-mediated vasoconstriction from blood loss shunts blood away
from the fetus to the mother. ✓
Rationale: Maternal hypovolemia triggers sympathetic activation, reducing uterine blood flow
to preserve maternal perfusion. Fetal tachycardia or bradycardia may be the first sign of
maternal compromise.
pg. 3
Exam Questions with Verified Correct Solutions
and Rationales - Already Graded A+
1. What is the most reliable method of confirming and monitoring correct placement of an
endotracheal (ET) tube?
Correct Answer: Continuous waveform capnography. ✓
Rationale: Continuous waveform capnography provides real-time confirmation of ET tube
placement by detecting exhaled carbon dioxide. It is more reliable than auscultation or
colorimetric devices because it continuously monitors for displacement.
2. What does the upper airway consist of?
Correct Answer: Nose, mouth, jaw, oral cavity, pharynx, and larynx. ✓
Rationale: The upper airway extends from the nose and mouth to the larynx. It functions to
warm, humidify, and filter inspired air while also facilitating speech and swallowing.
3. What is anatomical dead space, and where is it located?
Correct Answer: From the nose to the terminal bronchioles; approximately 2 mL/kg of inspired
tidal volume. No gas exchange occurs here. ✓
Rationale: Anatomical dead space is the volume of the conducting airways where no gas
exchange takes place. It includes the nose, pharynx, trachea, bronchi, and terminal bronchioles.
4. What is the cricothyroid membrane, and what procedure is performed there?
Correct Answer: The avascular structure between the thyroid and cricoid cartilages; site of
cricothyrotomy (emergency airway opening). ✓
Rationale: The cricothyroid membrane is easily palpable and avascular, making it the preferred
site for emergency surgical airway access when endotracheal intubation is impossible.
5. A PaCO₂ greater than 45 mmHg indicates what condition?
Correct Answer: C. Respiratory acidosis. ✓
Rationale: PaCO₂ >45 mmHg indicates hypercapnia due to alveolar hypoventilation, causing
pg. 1
,respiratory acidosis (pH <7.35). Causes include COPD, opioid overdose, and neuromuscular
disease.
6. What is the normal range for PaCO₂?
Correct Answer: 35-45 mm Hg. Less than 35 likely means hyperventilation (respiratory
alkalosis). ✓
Rationale: Normal PaCO₂ is maintained by alveolar ventilation. Hyperventilation decreases
PaCO₂ (respiratory alkalosis); hypoventilation increases PaCO₂ (respiratory acidosis).
7. A patient presents with tracheal deviation away from the affected side, decreased breath
sounds, and hyperresonance. What is happening?
Correct Answer: Tension pneumothorax. ✓
Rationale: Tension pneumothorax causes air trapping in the pleural space, shifting the
mediastinum to the opposite side. Tracheal deviation away from the affected side is a late but
classic sign.
8. In a tension pneumothorax, tracheal deviation goes in what direction?
Correct Answer: Away from the affected side. ✓
Rationale: Increased intrapleural pressure on the affected side pushes the trachea and
mediastinum toward the contralateral side, causing obstructive shock and requiring immediate
decompression.
9. What is the normal mean pulmonary artery pressure (PAP)?
Correct Answer: 10-20 mmHg. ✓
Rationale: *Normal mean PAP is 10-20 mmHg. Pulmonary hypertension is diagnosed when
mean PAP exceeds 20 mmHg at rest.*
10. Pulmonary hypertension is a mean pulmonary artery pressure greater than what value?
Correct Answer: Greater than 20 mmHg. ✓
Rationale: The hemodynamic definition of pulmonary hypertension is a resting mean PAP >20
mmHg confirmed by right heart catheterization.
pg. 2
, 11. What is primary pulmonary hypertension?
Correct Answer: Idiopathic genetic disorder caused by abnormal structure of the pulmonary
blood vessels. ✓
Rationale: Primary (idiopathic) pulmonary hypertension is a rare, progressive disorder with no
identifiable cause, though some cases are linked to genetic mutations (BMPR2).
12. Name three causes of secondary pulmonary hypertension.
Correct Answer: 1. Passive PH (back pressure from mitral stenosis, LV systolic failure); 2.
Active PH (constriction from increased volume, e.g., congenital heart disease); 3. Obstruction
(chronic recurrent pulmonary embolism). ✓
Rationale: Secondary pulmonary hypertension results from underlying conditions. Passive is
post-capillary, active is pre-capillary from increased flow, and obstructive is from mechanical
blockage.
13. What are the resuscitation priorities for a pregnant patient with trauma?
Correct Answer: Resuscitation priorities are the same as non-pregnant patients. The best way to
take care of the baby is to take care of the mother. ✓
Rationale: Maternal stabilization optimizes fetal outcomes. Prioritize airway, breathing,
circulation, and hemorrhage control. Fetal survival depends on maternal perfusion and
oxygenation.
14. What is the most common cause of maternal injury?
Correct Answer: Blunt trauma caused by motor vehicle collision (MVC). Second is blunt
trauma from falls; third is violence. ✓
Rationale: MVCs account for the majority of traumatic injuries during pregnancy. Proper
seatbelt use (lap belt below uterus, shoulder belt between breasts) reduces risk.
15. Why is fetal distress an early sign of maternal distress?
Correct Answer: Catecholamine-mediated vasoconstriction from blood loss shunts blood away
from the fetus to the mother. ✓
Rationale: Maternal hypovolemia triggers sympathetic activation, reducing uterine blood flow
to preserve maternal perfusion. Fetal tachycardia or bradycardia may be the first sign of
maternal compromise.
pg. 3
