CFRN General 4

Question 1

Henry's Law is most clinically relevant to which aeromedical patient concern?

Accepted Answer

Nitrogen bubble formation in SCUBA divers at altitude

Answer

Henry's Law states that the amount of gas dissolved in liquid is proportional to partial pressure; reduced pressure at altitude causes dissolved nitrogen to come out of solution, risking decompression sickness.

Question 2

A CFRN is called to transport a patient in active labor at 36 weeks gestation. The MOST important assessment prior to accepting the transport is:

Accepted Answer

Cervical dilation and estimated time to delivery

Answer

Cervical dilation and rate of labor progression determine whether there is adequate time to complete transport before delivery, which is the key safety decision in obstetric transports.

Question 3

A flight patient is receiving a vasopressor infusion via IV pump. What altitude-related equipment concern applies?

Accepted Answer

Air entrained in tubing from altitude change can cause air embolism

Answer

As altitude increases, any air in IV lines can expand and be introduced into the patient; priming lines thoroughly and monitoring for air bubbles is essential during ascent.

Question 4

When calculating medication dosing for a pediatric transport patient, the flight nurse should use which weight-based standard?

Accepted Answer

Broselow tape measurement for weight-based dosing

Answer

The Broselow tape correlates patient length to weight and provides pre-calculated drug doses, reducing calculation errors in high-stress pediatric resuscitation situations.

Question 5

A patient with a suspected tension pneumothorax develops severe hypotension and tracheal deviation during flight. The CFRN should:

Accepted Answer

Perform immediate needle thoracostomy without waiting for physician order

Answer

Tension pneumothorax is immediately life-threatening; CFRN scope of practice includes needle thoracostomy as an emergency intervention, and delay risks cardiac arrest.

CFRN - Certified Flight Registered Nurse Practice Test

CFRN - Certified Flight Registered Nurse Practice Test

CFRN General 4