Certified Flight Registered Nurse (CFRN) Practice Exam 2025 - Free CFRN Practice Questions and Study Guide

When transporting a patient with decompression sickness, Henry's Law is the appropriate choice as it relates to the behavior of gases dissolved in liquids under varying pressure conditions. This law states that the amount of gas that dissolves in a liquid is directly proportional to the partial pressure of that gas above the liquid.

In the context of decompression sickness, as a diver ascends, the pressure decreases, leading to a reduction in the solubility of nitrogen in the blood. If the ascent is too rapid, nitrogen comes out of solution too quickly, forming bubbles in the tissues, which causes the symptoms of decompression sickness. Understanding Henry's Law is essential for managing this condition because it explains why gradual decompression is critical.

The other gas laws listed pertain to different concepts; Charles's Law relates to the volume and temperature of gases, Boyle's Law deals with the relationship between pressure and volume, and Dalton's Law focuses on the partial pressures of gases in a mixture. None of these laws directly address the specific situation of gases dissolved in bodily fluids under changing pressures, making Henry’s Law the key principle in this case.