nitrox downsides

[bardass]

Bla bla bla …

 

[OTF]

~deleted~

 

[Celt]

hi I just got my nitrox cert and can't find any reason not to dive nitrox vs air. aside from the MOD and slight extra cost is there any reason not to dive nitrox?

How old are you? And how long do you plan on diving? You should ask a pulmonologist what are the long term affects of high oxygen mixes on human lungs.

 

[davehicks]

I used to dismiss claims that Nitrox would be less fatigueing to the diver. Then I got old. And then I developed some sort of afib that may eventually require a probe going in and desensitizing some nerves and which cannot be treated in the normal means of suppressing my heart rate with na drug due to a life long fitness regimen that leaves me with a 40 BPM or less pulse. So, now after exhaustive (pun) testing I have come to believe that Nitrox may well reduce fatigue and at least when I am wanting to hyperventilate due to inadequate blood circulation during an afib event triggered by chasing a turtle/shark/UFO etc, well, I just feel all warm and fuzzy all over about it. People go to O2 bars to breath cherry flavored O2 and then go vape with Nicotine and other carcinogens and undo what good might have been done, I guess it makes sense that a mix higher than ambient O2 might be less fatiguing, maybe. Unless Nitrox is all that is available I am probably not going to waste it tooling around in 15 feet of water shooting macro subjects. If it is cherry flavored though I am a go. Dinosaurs and giant dragon flies breathed Nitrox. Do not tell the climate folks that the oxygen content of the atmosphere has also changed, they could ban Nitrox as a pollutant. It was after all once called Voodoo Gas . I have not been able to get any Cretaceous opinions on the matter.

I was going to like your post until you went all in on Climate Conspiracy. Just sad.

 

[davehicks]

How old are you? And how long do you plan on diving? You should ask a pulmonologist what are the long term affects of high oxygen mixes on human lungs.

32% is not a high oxygen mix. Air at 75feet is about the same PPO2 as Nitrox at 50feet. So it's about time and depth and the PPO2. This is why we have MOD limits. Whatever the mix, in recreational scuba you are very unlikely to get anywhere close to the toxicity limits of oxygen for this to matter.

 

[bletso]

I know a lady diver who can no longer use nitrox.
Yet her physical condition and age, 68, mean that she should be using nitrox.
nitrox irritates her lungs; she coughs when she gets out of the water and feels a burning sensation for hours.
when she uses air, she doesn't cough and her lungs aren't irritated.

Interesting if true. She should at least consider getting a thorough medical work up concentrating on lung function. If it is a function of the PO2 then she should have the same symptoms when she dives near max sport diving depths or a little beyond. (simulating same PO2 a nitrox dive would give at shallower nitrox depth)

A couple posters have mentioned trimix in this thread. That should be addressed in a separate thread. As a rebreather diver I always dive trimix as I don't like narcosis, again a separate topic.

Good luck to your lady friend. Get her to see a pulmonary specialist.

 

[lowwall]

Interesting if true. She should at least consider getting a thorough medical work up concentrating on lung function. If it is a function of the PO2 then she should have the same symptoms when she dives near max sport diving depths or a little beyond. (simulating same PO2 a nitrox dive would give at shallower nitrox depth)

Good luck to your lady friend. Get her to see a pulmonary specialist.

Make that a pulmonary specialist who understands pO2 in the context of diving. Perhaps one who is an experienced diver and/or a hyperbaric specialist.

 

[greatwhite1]

tips are a gratuity and not mandatory, In Japan tipping is seen as an insult. No requirement to tip anywhere really. In places like Philippines I wont tip cash but buy a lechon pig so all the staff & boat crew and guides get a good feed in.

why not just give all the staff tips instead of a pig? Same thing except they can buy their own food for their own family.

 

[Nemrod]

Oh good grief, I am a geologist, MS+30, I often relate to my geo-knowledge and the paleo-atmosphere is of a particular interest to me, particularly prior to the current ice age and Mesozoic and older. You can always put me on block . I would appreciate it.

 

[davehicks]

Oh good grief, I am a geologist, MS+30, I often relate to my geo-knowledge and the paleo-atmosphere is of a particular interest to me, particularly prior to the current ice age and Mesozoic and older. You can always put me on block . I would appreciate it.

As a professional, maybe try and do a better job representing and educating the public. A snide quip might seem cute to you, but they add to the rampant misinformation and cynicism around the climate crisis. As divers we should all be concerned about the rapid coral bleaching and damage to ocean ecosystems that is more apparent year over year as average temperatures rise. The list of destinations worth diving is getting shorter at a disturbing pace.