CFRN Critical Care Medications and Pharmacology

Question 1

Which vasopressor is considered first-line for septic shock in the flight transport environment?

Accepted Answer

Norepinephrine

Answer

Norepinephrine is the first-line vasopressor for septic shock due to its potent alpha-adrenergic vasoconstriction with less tachycardia than dopamine.

Question 2

A flight nurse administers adenosine 6 mg IV push for SVT. The patient does not convert. What is the correct next dose?

Accepted Answer

12 mg

Answer

If the initial 6 mg dose of adenosine does not convert SVT, the recommended second dose is 12 mg IV push.

Question 3

Which medication is used to treat hyperkalemia-induced cardiac arrhythmias as the immediate first step?

Accepted Answer

Calcium gluconate or calcium chloride

Answer

Calcium (gluconate or chloride) is given first to stabilize the myocardial membrane and reduce the risk of fatal arrhythmia in hyperkalemia.

Question 4

A patient in the aircraft requires RSI. The flight nurse selects succinylcholine. Which contraindication should be assessed first?

Accepted Answer

Recent crush injury or burns

Answer

Succinylcholine is contraindicated in crush injuries or burns because depolarization causes dangerous potassium release, which can trigger cardiac arrest.

Question 5

What is the primary mechanism of action of ketamine when used for induction in the flight setting?

Accepted Answer

NMDA receptor antagonism

Answer

Ketamine produces dissociative anesthesia by blocking NMDA receptors, while preserving airway reflexes and hemodynamic stability.

CFRN - Certified Flight Registered Nurse Practice Test

CFRN - Certified Flight Registered Nurse Practice Test

CFRN Critical Care Medications and Pharmacology