Question Sore throat and pain when swallowing - symptoms of pulmonary oxygen toxicity?

[flymolo]

As the title suggests, I’m wondering if a sore throat and pain when swallowing could be symptoms of pulmonary oxygen toxicity. In my case they appeared after 3 days of dives and disappeared after a day of rest.

 

[Mobulai]

Not that I can make a good evaluation anyway (not my are of expertise), but some follow up Qs that might aid getting a more refined assessment:
Was this on OC or CCR?
What’s your estimated OTU exposure during these 3 days?
And, just a hunch, what was the water temperature (to eliminate simple fluishness)?

Hope all is well..

 

[flymolo]

i'm just curious whether the symptoms line up because the time did not feel excessive compared to dives i've done in the past. i didn't bother checking the otus but i probably should

 

[inquis]

I doubt POT, but perhaps being more sensitive if these were OC dives after being used to CCR? How sore of a throat are we talking?

 

[Mobulai]

i'm just curious whether the symptoms line up because the time did not feel excessive compared to dives i've done in the past. i didn't bother checking the otus but i probably should

My 2nd/3rd day of diving on OC (even just NDL diving) after a break generally gets me a mild sore throat (sometimes a slightly runny nose too), then clears out and I feel fit again

Would be good to eliminate OTUs

 

[inquis]

No way the 3-day OTU limit is even close to being reached.

 

[flymolo]

these were ccr dives, i did 3.5 hours on day 1 and 3.5 hours on day 2, followed by 2.5 hours on day 3. i started having pain swallowing during deco on day 3 and probably falsely attributed it to my hood being too tight. i think i was averaging somewhere between 1.1-1.2 on these dives. the sore throat and difficulty swallowing was painful enough to wake me up a few times throughout the night but it cleared after a day of no diving

 

[Still Kicking]

Occam says most likely a low-level throat infection but no way to tell for sure based on available data.

 

[macado]

Not a doctor, nor do I don't pretend to play one but for me after multiple long days of high ppO2 exposure I start to get a dry cough and scratchy throat.

In my case, I just ended 5 days of rebreather diving. Most dives were ~4-6 hours. I was running a ppO2 .8-1.0 but still ended most days with over 100% CNS. I consider the CNS clock to be mostly BS but I still try to mitigate this risk by running lower ppO2s so I don't cook my lungs if I can avoid it.

TL;DR - I don't get a sore throat but I get what I describe as a scratch throat and dry cough after multiple days of (usually 4-5) of rebreather diving.

EDIT: For me it equates to about 250-300 OTUs/day. I don't really worry about OTUs but I really do start to feel it in my lungs after multiple days of diving. Never an issue for me for 2-3 day weekend but when I start hitting 4-5 consecutive days I really notice it if all of my dives are longer.

 

[inquis]

The 3-day OTU limit is 19 hrs at a PO2 of 1.4 and 24 hrs for 1.2. You were a long way from those at 9.5 hrs.