Posts Tagged ‘nitrogen narcosis’

Say goodbye to nitrogen narcosis

Tuesday, April 1st, 2014

Say goodbye to nitrogen narcosis

Nitrogen Narcosis
Nitrogen narcosis, or the ‘Raptures of the Deep’, as Jacques-Yves Cousteau called it, is the disorientating effect and altered state of mind caused by breathing nitrogen at a high partial pressure.
The deeper a diver descends, the higher the partial pressure of nitrogen and other gases in his air will be. For this reason, nitrogen narcosis is usually thought of as a function of depth. The deeper a diver goes, the greater the narcosis. Although nitrogen is the principle component of air (79 percent), other gases in a diver’s tank are also narcotic at great depths, such as oxygen and carbon dioxide.
For this reason, many training agencies are now referring to the narcosis caused by breathing compressed air at depth as ‘inert gas narcosis’ rather than ‘nitrogen narcosis’. Of course, oxygen and carbon dioxide are not inert gases, so perhaps the best term to use is simply ‘narcosis’. Whatever you call it, the point is that more than one gas may influence a diver’s level of narcosis underwater.
Many divers compare narcosis to a feeling of pleasant drunkenness. In fact, divers sometimes use the ‘Martini Rule’ to roughly estimate the effects of narcosis during a dive. Depending upon the source, the Martini Rule states that for every 9m-18m of depth, a diver experiences the narcotic effect of drinking one martini. Well now, scientists in a research lab deep in the Arctic Circle have stumbled on a ‘cure’ for this intoxicating side-effect of diving deep. While looking to develop a preventative medicine to combat alcoholism, they produced a gel which absorbs inert gases and thus completely removes the effects of narcosis.
Flash-frozen into pellet-shaped tablets, by simply chewing on one prior to a dive, you can happily descend to 80m or more – previously an area the sole preserve of technical divers – on good old-fashioned compressed air and be just as clear-headed at your max depth as you were on the surface.
The scientists have yet to patent the innovative gel tablets – expected to sell under the name ‘Obirah’ – but keep an eye out for them coming soon to a dive centre near you!
http://www.sportdiver.co.uk/News/Latest-News/Say-goodbye-to-nitrogen-narcosis#

Nitrogen Narcosis

Thursday, November 25th, 2010

It’s due to you getting the opportunity to interact with numerous vibrant sea creatures discovered residing amongst the gorgeously formed majestic stones and corals. There’re only a few ideas which you must understand about it so you’ll enjoy fully the exploration as you’re minimizing the risks included with the sport. The compressed air which the tank possesses has a combination of 78% nitrogen and 21% oxygen.

Nitrogen narcosis could lead to an effect almost like liquor intoxication and usually happens at more than 100ft. During this moment, a victim will suffer a lowering within his ability to comprehend things which are occurring around him and judgment ability will additionally be crucially impaired. At this point, he might perform things that must not be performed at all, such as removing his goggles or other vital portions of his diving gear such as his fins or regulator s.

If you view your diving companion showing symptoms of this condition, you need to instantly help him make a controlled rise upward toward the surface, while observing all abnormal behaviors which the companion may show. The symptoms involve decreased dexterity, anxiety that’s manifested within their body behaviors, increased excitability, over confidence in dealing with a crucial situation, and delayed response to auditory or visual prompts.

As you view these symptoms manifesting within your diving companion, or if you begin to sense the exact same symptoms yourself, instantly start an ascent toward shallow waters. As you get nearer to the surface, you’ll see the symtoms and effects slowly dissipate. Following this, don’t attempt to dive in again for the rest of the day.

Nitrogen narcosis could be prevented by remaining within shallow waters. Though 18m might not be your idea of an amusing diving exploration, it’s a safe depth that will prevent this condition from arising.

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