Arkansas Boating Practice Exam

Cold water immersion can be fatal due to what initial reaction?

1. Shock from sudden temperature change

2. Gradual loss of body heat

3. Fluid retention in the lungs

4. Frostbite on extremities

The correct answer is: Shock from sudden temperature change

When a person is immersed in cold water, they may experience a sudden drop in body temperature. This can cause shock and lead to loss of consciousness, which can result in drowning. While gradual loss of body heat and frostbite on extremities are potential risks, they are not the initial reaction that can lead to fatality. Fluid retention in the lungs can occur in cases of cold water immersion syndrome, but it is not the first reaction that can cause fatality. Therefore, the initial and most immediate concern in cold water immersion is the risk of shock from the sudden temperature change.