Describe the physiological effects of scuba diving and flying.

Description should include the following concepts:

• Scuba diving subjects the body to increased pressure, which allows more nitrogen to dissolve in body tissues and fluids.
• The reduction of atmospheric pressure that accompanies flying can produce physical problems for scuba divers.
• A pilot or passenger who intends to fly after scuba diving should allow the body sufficient time to rid itself of excess nitrogen absorbed during diving.

Process/Skill Questions:

• What is decompression sickness (DCS)?
• How long should a diver wait after a dive before flying?

PLT331