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Had a not so fun experience, any ideas?

Discussion in 'Near Misses and Lessons Learned' started by Princess Chris, Jul 30, 2019.

  1. johndiver999

    johndiver999 Manta Ray

    # of Dives: 500 - 999
    Location: Gainesville FL
    738
    625
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    The unequal pressure causes the problems, if the mechanism is associated with the crystals, I really don’t know, but the fact that equalization of the pressure results in almost immediate relief of symptoms, makes me guess that it is not the crystals.

    I too woke up with vertigo and had to slam my head repeatedly into the couch sideways before the symptoms ameliorated. I suffered for hours before being made aware of the home remedy
     
    AfterDark likes this.
  2. AfterDark

    AfterDark Solo Diver

    # of Dives: 500 - 999
    Location: Rhode Island, USA
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    There are specific exercises for that condition that don't involve slamming one's head against anything.
     
  3. johndiver999

    johndiver999 Manta Ray

    # of Dives: 500 - 999
    Location: Gainesville FL
    738
    625
    93
  4. Princess Chris

    Princess Chris Instructor, Scuba

    # of Dives: 200 - 499
    Location: Port vila, vanuatu
    33
    31
    18
    So as it turns out I suffered from a panic attack proabably triggered by a little narcosis which im not going to lie is not the easiest thing to admit. I'm a confident diver and I've never had any issues with anxiety even in highly stressful diving situations which is why I was so confused as to what the hell happened to me.

    Luckily i still acted rationally but I have learnt from my experience and now I know how to deal with it should it happen again. So sometimes it's not always a physical cause soemtimes it's just your mind betraying you. It can happen to anyone, even if you don't think it will, I know I certainly didn't.
     
  5. chillyinCanada

    chillyinCanada Solo Diver Staff Member

    13,347
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    Fair enough, but what or who convinced you that what you experienced was a panic attack vs some physical reaction?
     
  6. Princess Chris

    Princess Chris Instructor, Scuba

    # of Dives: 200 - 499
    Location: Port vila, vanuatu
    33
    31
    18
    My old boss, a retired gp. The man knows his stuff when it comes to diving issues.
     
    2airishuman and chillyinCanada like this.
  7. John C. Ratliff

    John C. Ratliff Instructor, Scuba

    # of Dives: I'm a Fish!
    Location: Beaverton, Oregon
    2,650
    1,127
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    I am going to go a different route than others here, and ask whether you had any other symptoms such as hearing difficulty, ringing in the ears, aside from the nausia. The reason: this may have been a manifestation of decompression sickness affecting your inner ear only. I found one reference to this from 1990:
    The reason I say this is that your ascent, noted in the red area of your profile above, is red, and seems to show a faster ascent than recommended. Here is another study which shows that the inner ear has a greater propensity to developing decompression sickness than other tissues.
    [quote
    Respir Physiol Neurobiol. 2019 Jan;259:119-121. doi: 10.1016/j.resp.2018.08.010. Epub 2018 Aug 30.
    Taravana, vestibular decompression illness, and autochthonous distal arterial bubbles.
    Arieli R1.
    Author information
    Abstract



    Decompression bubbles can develop only from pre-existing gas micronuclei. These are the nanobubbles which appear on active hydrophobic spots (AHS) found on the luminal aspect of all blood vessels. Following decompression, with the propagation of blood along the arterial tree, diffusion parameters cause increased transfer of nitrogen from the tissue into the artery, and more so if perfusion is low. Taravana is a neurological form of decompression illness (DCI) prevalent in repeated breath-hold diving. A nanobubble on an AHS in a distal artery of the brain may receive an influx of nitrogen after each dive until it occludes the arterial blood flow. The vestibular organ has very low perfusion compared with the brain and the cochlea of the inner ear. We suggest that a nanobbubble on an AHS in the distal artery of the vestibular organ will receive a high influx of nitrogen from the surrounding tissue after decompression due to the low nitrogen clearance, thus expanding to cause vestibular DCI.

    Copyright © 2018 Elsevier B.V. All rights reserved.

    KEYWORDS:
    Active hydrophobic spot; Breath-hold dive; Hypoperfusion; Isobaric counterdiffusion; Neurologic disorder; Risk

    PMID:

    30172778

    DOI:

    10.1016/j.resp.2018.08.010
    https://www.ncbi.nlm.nih.gov/pubmed/30172778[/quote]
    'Just a thought.
    SeaRat
     
  8. 2airishuman

    2airishuman Solo Diver

    # of Dives: 100 - 199
    Location: Greater Minnesota
    2,373
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    Hello Chris

    I think on the whole this thread has contained a great deal of speculation. And I think your GP is engaging in some speculation, albeit well-informed speculation.

    Most people experience some narcosis at the depths you were diving although narcosis ordinarily abates quickly upon ascent. It would be very unusual for you to have started experiencing DCS symptoms while still at depth, given the profile you dove.

    Beyond that it is hard to say. Vertigo, CO in the cylinder, panic attack, CO2 retention, narcosis, who knows.
     
    AfterDark likes this.
  9. Princess Chris

    Princess Chris Instructor, Scuba

    # of Dives: 200 - 499
    Location: Port vila, vanuatu
    33
    31
    18
    No the red isn't my ascent rate it is becasue I had gone into deco, diverlog for aqualung isn't exactly the clearest. My quickest ascent rate was 4.5m per minute.

    unfortunately yes, without any physical symptoms you are correct, it could be anything.
     

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