Certified Transport Registered Nurse Certification Practice Exam

What is the consequence of flying too soon after diving?

1. Increased fatigue

2. Decompression sickness

3. Air pressure imbalance

4. Nausea

The correct answer is: Decompression sickness

Flying too soon after diving can lead to decompression sickness, often referred to as "the bends." This occurs because when a diver is at greater depths, the pressure increases and the body absorbs more nitrogen from the air they breathe. If a diver ascends too quickly and then flies soon afterward, the reduction in pressure causes nitrogen to form bubbles in the body. These bubbles can create a range of harmful effects, affecting joints, muscles, and potentially vital organs, leading to symptoms such as pain, paralysis, or even life-threatening conditions. Understanding this physiology underscores the critical importance of adhering to safe diving practices, which typically recommend waiting a specific amount of time before flying—usually at least 24 hours—to allow the body to safely eliminate the excess nitrogen.