FLIGHT NURSE PRE-HIRE EXAM
2026/2027 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS AND RATIONALES
Critical Care & Emergency Medicine Exam Revision Study Guide (Part 1)
1. What is the normal pH range?
Correct Answer: 7.35–7.45
Rationale: Normal blood pH indicates proper acid-base balance. Values below 7.35 indicate
acidosis, while values above 7.45 indicate alkalosis.
, 2. What is the normal PaO₂ (PO₂) range?
Correct Answer: 80–100 mmHg
Rationale: Reflects arterial oxygenation. Low values suggest hypoxemia.
3. What is the normal PaCO₂ (PCO₂) range?
Correct Answer: 35–45 mmHg
Rationale: Indicates respiratory ventilation. Elevated values suggest respiratory acidosis;
decreased values suggest respiratory alkalosis.
4. What is the normal HCO₃⁻ level?
Correct Answer: 22–26 mEq/L
Rationale: Bicarbonate is the metabolic component of acid-base balance.
5. What is the normal oxygen saturation (O₂ Sat)?
Correct Answer: Greater than 95%
Rationale: Indicates adequate oxygen delivery to tissues.
6. What is the RSI dose of Etomidate?
Correct Answer: 0.3 mg/kg (usually about 20 mg)
Rationale: Provides rapid sedation with minimal cardiovascular depression.
7. What is the RSI dose of Fentanyl?
Correct Answer: 5–10 mcg/kg
Rationale: Commonly used in pediatrics to blunt the sympathetic response to intubation.
2026/2027 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS AND RATIONALES
Critical Care & Emergency Medicine Exam Revision Study Guide (Part 1)
1. What is the normal pH range?
Correct Answer: 7.35–7.45
Rationale: Normal blood pH indicates proper acid-base balance. Values below 7.35 indicate
acidosis, while values above 7.45 indicate alkalosis.
, 2. What is the normal PaO₂ (PO₂) range?
Correct Answer: 80–100 mmHg
Rationale: Reflects arterial oxygenation. Low values suggest hypoxemia.
3. What is the normal PaCO₂ (PCO₂) range?
Correct Answer: 35–45 mmHg
Rationale: Indicates respiratory ventilation. Elevated values suggest respiratory acidosis;
decreased values suggest respiratory alkalosis.
4. What is the normal HCO₃⁻ level?
Correct Answer: 22–26 mEq/L
Rationale: Bicarbonate is the metabolic component of acid-base balance.
5. What is the normal oxygen saturation (O₂ Sat)?
Correct Answer: Greater than 95%
Rationale: Indicates adequate oxygen delivery to tissues.
6. What is the RSI dose of Etomidate?
Correct Answer: 0.3 mg/kg (usually about 20 mg)
Rationale: Provides rapid sedation with minimal cardiovascular depression.
7. What is the RSI dose of Fentanyl?
Correct Answer: 5–10 mcg/kg
Rationale: Commonly used in pediatrics to blunt the sympathetic response to intubation.
