Nitrogen Narcosis
- Nitrogen Narcosis Overview
- Nitrogen Narcosis Symptoms
- Nitrogen Narcosis Treatment
- When to Seek Medical Care
- For More Information
- Web Links
- Synonyms and Keywords
- Authors and Editors
Nitrogen Narcosis Overview
Breathing < a href="/script/main/art.asp?articlekey=32780">nitrogen under pressure produces an intoxicating effect known as nitrogen narcosis. Most divers experience symptoms of nitrogen narcosis at depths greater than 100 feet, but symptoms may occur in depths as little as 33 feet. For this reason, use of compressed air deeper than 120 feet is not recommended.
Ascent reverses the symptoms of nitrogen narcosis. Factors that increase the risk of narcosis include cold temperatures, rapid descent, anxiety, alcohol, sedatives, fatigue, and carbon dioxide excess.
Next: Nitrogen Narcosis Symptoms »
Women's Health
Find out what women really need.
From WebMD
First Aid Resources
- 12 Tips to Fight Colds, Flu and Other Viruses
- An Embarrassing Condition for Many Kids
- Is Your Baby a "Happy Spitter"?
Featured Centers
Health Solutions From Our Sponsors
Also on eMedicineHealth
Read What Your Physician is Reading on eMedicine
Decompression Sickness »
Although decompression sickness (DCS), a complex resulting from changed barometric pressure, includes high-altitude–related and aerospace-related events, this article focuses on decompression associated with the sudden decrease in pressures during underwater ascent, usually occurring during free or assisted dives.

