what happens ? - Page 2

Hanssing · 11th July 2011, 16:32

Quote: (Originally Posted by viperman)

Yesterday we dive in the evening type 23.00 do a night dive.

I have not done a night dive in a long time but we took it easy when we put our things.

I went into the water before the others and made a pre breathed "breathed out of the Rebreather machine to activate the lime.

Was there maybe 5-7 minutes before we went down

The dive went well except that I had fog problems in half the mask, it is glued back on the right side of the mask almost the whole time were releasing water into the mask, rinse clean empty mask

The view was like that when I was behind 2 divers and it did not get any better that I looked bad on the right eye due to and from the mist fog.

35 minutes into the dive of perhaps 12 m deep, I feel weird worried mm does not feel okay so I bailout passes of 21% air I have with me and trying to calm me down but does not feel ok anyway buddy tells me that a got on bailout we go up

At the rise of 8-6 m, it feels much better and we is 3 minutes at 4.5 to 3 meters before we surface.

What's going on ?

I suffer of vertigo, why is that

Lime in the machine had divetime 123 min before the dive

In summary:
You did a shallow 12m nightdive for 35 mins on a stored scrubber with 123 mins time on it.
During the dive you felt anxious, and bailed out, and ascended.
You had continually mask clearing issues.

Correct summary?
----
First off, the angst you felt could be from a night-dive on CCR which you have not done for a long time.
But from outside it actually sounds as a small slow CO2 hit, where you often feel unsafe before you get increased ventilation-rate.
Now a small CO2 hit could be from the scrubber being stored incorrectly, or from incorrect breathing (ie. CO2 retention) or other factors.
Now if you were clearing mask all the time, you we're perhaps breathing of the ADV a lot, this can cause you to do to shallow breathing which agan leads to insufficient ventialtion of your lungs and in the end perhaps retained CO2.

Dizzy-spells during asceding/descending is something many divers encounters and is probably not related to CO2-issues if any were present. Most likely its due to inner-ears not equalizing the same which can cause dizzyness that last a short while, but normally (at least for me) it goes away after less than 30 seconds, but it can be pretty bad when it occurs.

Lastly dont rule out bad air in your diluent....

I would recommend to change Sorb, Dil, and a carefull check of DSV-valves, and then try again where you notice that you are not running completely ad minimum loop-volume. A bigger than normal inhale should not be strained - then your loop-volume is *too* low.

**DwayneJ** · 12th July 2011, 01:41

Quote: (Originally Posted by dreamdive)

I don't think anybody diving (recreational or tech) should risk diving with contact lenses! If you are tech, then you should be able to afford a perm lens dive mask. If you are recreational, why risk the panic of being blind when loosing your lenses?????

Just a concerned voice, hoping to be helpful!!

I also disagree. Never lost a lens yet diving and that includes mask off/open eyes.

Dwayne

toe · 12th July 2011, 07:47

Quote: (Originally Posted by DwayneJ)

I also disagree. Never lost a lens yet diving and that includes mask off/open eyes.

Dwayne

Agree, with mask of my lens stay on. ten years using lens.

Tony

matt crane · 12th July 2011, 15:03

Quote: (Originally Posted by Nitrogenius)

Well if you'd had to close your eyes this might be a contradiction for deco and/or technical diving, but as stated.

Funny thing that, I keep my eyes closed just long enough to get my spare mask out of my pocket and onto my face therefor deco/tech diving is not a problem

I understand what you are saying about cheap masks/cheap prescription lenses for them, but I have yet to find a cheap mask that fits me properly

Nitrogenius · 12th July 2011, 21:37

Quote: (Originally Posted by matt crane)

Funny thing that, I keep my eyes closed just long enough to get my spare mask out of my pocket and onto my face therefor deco/tech diving is not a problem

Hmm... and when you loose or break your backup you just die? I'd rather open my eyes

dreamdive · 13th July 2011, 02:26

Well I guess that settles the issues on contact lenses. Ok with soft ones but not OK with hard ones?!

Still trying to figure out what went wrong with the person who posted this in the first place.

**DwayneJ** · 13th July 2011, 03:33

Quote: (Originally Posted by dreamdive)

Well I guess that settles the issues on contact lenses. Ok with soft ones but not OK with hard ones?!

Still trying to figure out what went wrong with the person who posted this in the first place.

My best guess is vertigo brought on by the "half" mask fogging leaving one good eye/one bad eye.

Certainly not an experience I would repeat but take a dive with fresh scrubber and a mask half clean and see what happens.

Dwayne

tecdiverdude · 13th July 2011, 05:44

Quote: (Originally Posted by DwayneJ)

My best guess is vertigo brought on by the "half" mask fogging leaving one good eye/one bad eye.

Certainly not an experience I would repeat but take a dive with fresh scrubber and a mask half clean and see what happens.

Dwayne

Its quite challenging... and u eventually vomit...

Pawel Szopinski · 13th July 2011, 06:59

A vertigo attack can also be trigged by even mild reverse block in one of the ears which creates pressure difference between the two or even cold water leaking to just one of the ears can cause similar symptoms.

If you haven't experienced it yet, get read for a roller-coaster.

Not to mention round window rupture or inner-ear bends.

dreamdive · 13th July 2011, 16:48

Quote: (Originally Posted by Pawel Szopinski)

A vertigo attack can also be trigged by even mild reverse block in one of the ears which creates pressure difference between the two or even cold water leaking to just one of the ears can cause similar symptoms.

If you haven't experienced it yet, get read for a roller-coaster.

Not to mention round window rupture or inner-ear bends.

Definately not recommended!!!!

11th July 2011, 16:32	#11 (permalink)
Hanssing Explorers Exodus rEvo-II Join Date: Nov 2005 Location: Denmark Posts: 860	Re: what happens ? Quote: (Originally Posted by viperman) Yesterday we dive in the evening type 23.00 do a night dive. I have not done a night dive in a long time but we took it easy when we put our things. I went into the water before the others and made a pre breathed "breathed out of the Rebreather machine to activate the lime. Was there maybe 5-7 minutes before we went down The dive went well except that I had fog problems in half the mask, it is glued back on the right side of the mask almost the whole time were releasing water into the mask, rinse clean empty mask The view was like that when I was behind 2 divers and it did not get any better that I looked bad on the right eye due to and from the mist fog. 35 minutes into the dive of perhaps 12 m deep, I feel weird worried mm does not feel okay so I bailout passes of 21% air I have with me and trying to calm me down but does not feel ok anyway buddy tells me that a got on bailout we go up At the rise of 8-6 m, it feels much better and we is 3 minutes at 4.5 to 3 meters before we surface. What's going on ? I suffer of vertigo, why is that Lime in the machine had divetime 123 min before the dive In summary: You did a shallow 12m nightdive for 35 mins on a stored scrubber with 123 mins time on it. During the dive you felt anxious, and bailed out, and ascended. You had continually mask clearing issues. Correct summary? ---- First off, the angst you felt could be from a night-dive on CCR which you have not done for a long time. But from outside it actually sounds as a small slow CO2 hit, where you often feel unsafe before you get increased ventilation-rate. Now a small CO2 hit could be from the scrubber being stored incorrectly, or from incorrect breathing (ie. CO2 retention) or other factors. Now if you were clearing mask all the time, you we're perhaps breathing of the ADV a lot, this can cause you to do to shallow breathing which agan leads to insufficient ventialtion of your lungs and in the end perhaps retained CO2. Dizzy-spells during asceding/descending is something many divers encounters and is probably not related to CO2-issues if any were present. Most likely its due to inner-ears not equalizing the same which can cause dizzyness that last a short while, but normally (at least for me) it goes away after less than 30 seconds, but it can be pretty bad when it occurs. Lastly dont rule out bad air in your diluent.... I would recommend to change Sorb, Dil, and a carefull check of DSV-valves, and then try again where you notice that you are not running completely ad minimum loop-volume. A bigger than normal inhale should not be strained - then your loop-volume is too low. Last edited by Hanssing; 11th July 2011 at 16:35..
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12th July 2011, 01:41	#12 (permalink)
DwayneJ Dark, cold and wet. rEvo III rMS Join Date: Aug 2008 Location: Redondo Beach, CA Posts: 641	Re: what happens ? Quote: (Originally Posted by dreamdive) I don't think anybody diving (recreational or tech) should risk diving with contact lenses! If you are tech, then you should be able to afford a perm lens dive mask. If you are recreational, why risk the panic of being blind when loosing your lenses????? Just a concerned voice, hoping to be helpful!! I also disagree. Never lost a lens yet diving and that includes mask off/open eyes. Dwayne
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12th July 2011, 07:47	#13 (permalink)
toe RBW Member rEvo 111 hybrid Vision Inspo,Evo+, classic Join Date: Oct 2006 Location: ireland Posts: 286	Re: what happens ? Quote: (Originally Posted by DwayneJ) I also disagree. Never lost a lens yet diving and that includes mask off/open eyes. Dwayne Agree, with mask of my lens stay on. ten years using lens. Tony
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12th July 2011, 15:03	#14 (permalink)
matt crane RBW Member Inspiration Vision Inspiration Classic Join Date: Feb 2006 Location: Cornwall Posts: 347	Re: what happens ? Quote: (Originally Posted by Nitrogenius) Well if you'd had to close your eyes this might be a contradiction for deco and/or technical diving, but as stated. Funny thing that, I keep my eyes closed just long enough to get my spare mask out of my pocket and onto my face therefor deco/tech diving is not a problem I understand what you are saying about cheap masks/cheap prescription lenses for them, but I have yet to find a cheap mask that fits me properly Last edited by matt crane; 12th July 2011 at 15:06..
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12th July 2011, 21:37	#15 (permalink)
Nitrogenius Recently hooked on Rebbie Inspo classic Dolphin as is :) Join Date: Jan 2010 Location: Germany Posts: 744	Re: what happens ? Quote: (Originally Posted by matt crane) Funny thing that, I keep my eyes closed just long enough to get my spare mask out of my pocket and onto my face therefor deco/tech diving is not a problem Hmm... and when you loose or break your backup you just die? I'd rather open my eyes
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13th July 2011, 02:26	#16 (permalink)
dreamdive RBW Member rEvo Optima Join Date: May 2007 Location: Florida Posts: 508	Re: what happens ? Well I guess that settles the issues on contact lenses. Ok with soft ones but not OK with hard ones?! Still trying to figure out what went wrong with the person who posted this in the first place.
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13th July 2011, 03:33	#17 (permalink)
DwayneJ Dark, cold and wet. rEvo III rMS Join Date: Aug 2008 Location: Redondo Beach, CA Posts: 641	Re: what happens ? Quote: (Originally Posted by dreamdive) Well I guess that settles the issues on contact lenses. Ok with soft ones but not OK with hard ones?! Still trying to figure out what went wrong with the person who posted this in the first place. My best guess is vertigo brought on by the "half" mask fogging leaving one good eye/one bad eye. Certainly not an experience I would repeat but take a dive with fresh scrubber and a mask half clean and see what happens. Dwayne
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13th July 2011, 05:44	#18 (permalink)
tecdiverdude little man, big dreams JJ CCR.. Join Date: Jan 2011 Location: nsw-newcastle Posts: 394	Re: what happens ? Quote: (Originally Posted by DwayneJ) My best guess is vertigo brought on by the "half" mask fogging leaving one good eye/one bad eye. Certainly not an experience I would repeat but take a dive with fresh scrubber and a mask half clean and see what happens. Dwayne Its quite challenging... and u eventually vomit...
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13th July 2011, 06:59	#19 (permalink)
Pawel Szopinski It's Hammertime! Hammerhead Megalodon, Inspiration Join Date: Feb 2008 Location: London, United Kingdom Posts: 708	Re: what happens ? A vertigo attack can also be trigged by even mild reverse block in one of the ears which creates pressure difference between the two or even cold water leaking to just one of the ears can cause similar symptoms. If you haven't experienced it yet, get read for a roller-coaster. Not to mention round window rupture or inner-ear bends. __________________ Hammerhead CCR Instructor Hammerhead Repair Facility Golem Gear Dealer www.silentthrill.com
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13th July 2011, 16:48	#20 (permalink)
dreamdive RBW Member rEvo Optima Join Date: May 2007 Location: Florida Posts: 508	Re: what happens ? Quote: (Originally Posted by Pawel Szopinski) A vertigo attack can also be trigged by even mild reverse block in one of the ears which creates pressure difference between the two or even cold water leaking to just one of the ears can cause similar symptoms. If you haven't experienced it yet, get read for a roller-coaster. Not to mention round window rupture or inner-ear bends. Definately not recommended!!!!
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