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General Category => Diving Safety, First Aid & Travel Issues => Topic started by: blondmyth on 26 Sep 14, 17:54

Title: DCI, anyone here had it before?
Post by: blondmyth on 26 Sep 14, 17:54
What were your symptoms? And the dive profile that caused it?

Thought I had it as didn't do a deco stop after exceeding Ndl during a trip to Bali last month, but symptoms such as tingling fingers and lethargy only developed 5 days after last dive. Saw the sgh dive physician who ruled DCI out.

Incident has certainly highlighted the importance of dive insurance in case u need the chamber
Title: Re: DCI, anyone here had it before?
Post by: runez on 26 Sep 14, 18:38
Just a note that insurance may not cover you if you exceed your highest qualification. E.g. Deco diving or going deeper than certified.

Some insurance policies also have additional clauses such as no deeper than 30m. So do read the fine print to know what you're covered for.

Many dive computers are conservative, so exceeding the NDL doesn't automatically mean a DCS hit. However, there are cases of DCS hits within NDLs ("undeserved hits"). So, it's a good idea not to exceed NDLs unless you know what you are doing.



Title: Re: DCI, anyone here had it before?
Post by: Fireflies on 26 Sep 14, 18:38
I just bought DAN membership and insurance. I think it's better to have than not.
Title: Re: DCI, anyone here had it before?
Post by: ghostkid on 27 Jan 15, 15:31
I just bought DAN membership and insurance. I think it's better to have than not.

Hi Fireflies/ All,

When I tried to view "Access to Dive Accident Insurance" in DAN's website, the country of residence only shows US and Canada. How to get around this?
Title: Re: DCI, anyone here had it before?
Post by: snikrs on 27 Jan 15, 15:38
When I tried to view "Access to Dive Accident Insurance" in DAN's website, the country of residence only shows US and Canada. How to get around this?

You'd have to look at DAN Asia-Pacific for our neck of the woods. http://www.danap.org/ (http://www.danap.org/)
Title: Re: DCI, anyone here had it before?
Post by: lovelyinn on 18 Feb 15, 00:51
yeah. it is better to have DAN insurance...
I do have DAN insurance, but I also do buy travel insurance... if needed, will claim my travel insurance 1st, then DAN.
Title: Re: DCI, anyone here had it before?
Post by: mentalist on 18 Feb 15, 02:38

yeah. it is better to have DAN insurance...
I do have DAN insurance, but I also do buy travel insurance... if needed, will claim my travel insurance 1st, then DAN.

DAN is secondary insurance. If u have a travel insurance and ur incident is covered in it, DAN will not cover it.


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Title: Re: DCI, anyone here had it before?
Post by: lovelyinn on 19 Feb 15, 02:01
DAN is secondary insurance. If u have a travel insurance and ur incident is covered in it, DAN will not cover it.


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yeah. if worst case, the travel insurance does not have enough funds, then DAN will kick in.
Title: Re: DCI, anyone here had it before?
Post by: blondmyth on 20 Feb 15, 03:15
Which insurer do most of you buy your travel insurance from?
Title: Re: DCI, anyone here had it before?
Post by: Ryoin82 on 20 Feb 15, 16:02
I buy it from AIG, but I have DAN as well


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Title: Re: DCI, anyone here had it before?
Post by: racerx_ on 20 Feb 15, 17:16
What were your symptoms? And the dive profile that caused it?

Thought I had it as didn't do a deco stop after exceeding Ndl during a trip to Bali last month, but symptoms such as tingling fingers and lethargy only developed 5 days after last dive. Saw the sgh dive physician who ruled DCI out.

Incident has certainly highlighted the importance of dive insurance in case u need the chamber

I thought certain symptoms can present after the fact. Never had DCI but thought i did once or twice. I think i've experienced sub-clinical symptoms. Seem to be a bit more sensitive to it.

but more importantly why'd you exceed NDL and why didn't you do the deco stop?
Title: Re: DCI, anyone here had it before?
Post by: blondmyth on 21 Feb 15, 01:42
It was the first time my relatively new dive comp had exceeded NDL and I didn't know the steps to take.

Had alerted my guide about exceeding NDL, and we proceeded to do a deco stop. But strangely after seeing that my dive comp got locked out, he aborted the deco stop and said to surface. Between the both of us, he was the dive professional and so I thought he knew what he was doing. He turned out to be an instructor and it was only through talking to instructor friends back home did I realize what had happened.

It was fortunate that it wasn't DCI in the end though. As to why I exceeded NDL, I would usually check my limits quite often, but I did a lot of dives then, 17 in 6 days, that plus I guessed I had failed to keep an eye on my limits during that dive, only noticing it after I had exceeded NDL
Title: Re: DCI, anyone here had it before?
Post by: Cool79 on 21 Feb 15, 03:07
It was the first time my relatively new dive comp had exceeded NDL and I didn't know the steps to take.

Had alerted my guide about exceeding NDL, and we proceeded to do a deco stop. But strangely after seeing that my dive comp got locked out, he aborted the deco stop and said to surface. Between the both of us, he was the dive professional and so I thought he knew what he was doing. He turned out to be an instructor and it was only through talking to instructor friends back home did I realize what had happened.

It was fortunate that it wasn't DCI in the end though. As to why I exceeded NDL, I would usually check my limits quite often, but I did a lot of dives then, 17 in 6 days, that plus I guessed I had failed to keep an eye on my limits during that dive, only noticing it after I had exceeded NDL

not sure why your instructor asked you to go up and dont complete your deco stop...
you need to complete your deco stop...
Title: Re: DCI, anyone here had it before?
Post by: Alvin Ho on 21 Feb 15, 08:53
What were your symptoms? And the dive profile that caused it?

Thought I had it as didn't do a deco stop after exceeding Ndl during a trip to Bali last month, but symptoms such as tingling fingers and lethargy only developed 5 days after last dive. Saw the sgh dive physician who ruled DCI out.

Incident has certainly highlighted the importance of dive insurance in case u need the chamber

If you go google DAN for case incidents, you'll notice a few interesting common themes that the organization is trying to put across.

1) you can get a hit even if you are diving within the limits of your dive computer, even if you are a regular diver and experienced diver, even if you are well rested and follow all the traditional rules or recommendations of safe diving. In other words, DCI can hit anyone at anytime and you should dive as conservatively as you can to reduce risk.

2) If you suspect something is wrong, call a dive physician via the DAN hotline immediately. Don't have to be a member to call. They have a 24 hour hotline and can give sound medical advice through a dive doctor on call. Often in DAN incident reports you have dive professionals (aka dive masters/instructors/dive shop owners) brushing off a diver's concerns as something else, delaying treatment. If anything goes wrong, you want to be breathing O2 ASAP.
Title: Re: DCI, anyone here had it before?
Post by: Alvin Ho on 21 Feb 15, 08:56
It was the first time my relatively new dive comp had exceeded NDL and I didn't know the steps to take.

Had alerted my guide about exceeding NDL, and we proceeded to do a deco stop. But strangely after seeing that my dive comp got locked out, he aborted the deco stop and said to surface. Between the both of us, he was the dive professional and so I thought he knew what he was doing. He turned out to be an instructor and it was only through talking to instructor friends back home did I realize what had happened.

It was fortunate that it wasn't DCI in the end though. As to why I exceeded NDL, I would usually check my limits quite often, but I did a lot of dives then, 17 in 6 days, that plus I guessed I had failed to keep an eye on my limits during that dive, only noticing it after I had exceeded NDL

you should always learn all the functions of a dive computer before going diving with it. If not you might as well not used it. also you should always heed your own training or get more knowledge in diving to make an informed decision yourself. don't let others dictate what you do underwater. it is your life afterall.
Title: Re: DCI, anyone here had it before?
Post by: Cool79 on 21 Feb 15, 12:42
If you go google DAN for case incidents, you'll notice a few interesting common themes that the organization is trying to put across.

1) you can get a hit even if you are diving within the limits of your dive computer, even if you are a regular diver and experienced diver, even if you are well rested and follow all the traditional rules or recommendations of safe diving. In other words, DCI can hit anyone at anytime and you should dive as conservatively as you can to reduce risk.

2) If you suspect something is wrong, call a dive physician via the DAN hotline immediately. Don't have to be a member to call. They have a 24 hour hotline and can give sound medical advice through a dive doctor on call. Often in DAN incident reports you have dive professionals (aka dive masters/instructors/dive shop owners) brushing off a diver's concerns as something else, delaying treatment. If anything goes wrong, you want to be breathing O2 ASAP.

what alvin stated is correct.
the recent diving trip i had went, i think i got hit by DCI. and i called DAN to confirm if i got hit. after talking for a while, they suspected i may have got hit with a mild DCI.

as i was a bit dizzy after the diving trip and i was going to take a flight back him.

he also assured me, after i have taken the flight, it has worsen, then faster go n see a dive doc locally.

ended up when i hit singapore, i still feel the same...

so i think it is the LOB after effect... lol
Title: Re: DCI, anyone here had it before?
Post by: Ryoin82 on 21 Feb 15, 13:24
I also experienced dizziness after boat trips. This can be due to the rocking of the boat. After a day trip, when I am back watching tv in the hotel room, I can feel myself swaying left and right. Not on LOBs though.


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Title: Re: DCI, anyone here had it before?
Post by: blondmyth on 22 Feb 15, 07:12
you should always learn all the functions of a dive computer before going diving with it. If not you might as well not used it. also you should always heed your own training or get more knowledge in diving to make an informed decision yourself. don't let others dictate what you do underwater. it is your life afterall.

I agree with learning to use all the functions of a dive comp. after that trip I looked through the dive comp manual again to see what I had missed. Thanks for the advice
Title: Re: DCI, anyone here had it before?
Post by: limk on 22 Feb 15, 09:29
Some practical advantageous for learning up the dive com (same applies for camera) before getting into the water:
- less workload/multitasking to 'do stuff', enjoy more, with less time figuring out things and possibly stressing out
>this often can snowball into more and more things, [e.g. beeping com when u just shot up the bag at s/stop then some current comes and your buddy gets swept off] the beeping or problem reading makes more panicky.

- u can proudly announce to your instructor about switching gas to nitrox mode when going for nitrox dive
hahaha

- understanding ('dive education') what breaching NDL means - ie. since you comp is now beeping or warning, you've exceeded the limits due to excess nitrogen in the blood at depth. so? ascent immediately+signal the DM/buddy and go up as per ascent limits and watch your watch closely (er, but not too closely).
one (in my opinion) should avoid using a checklist to point out this is DCI, this is not DCI, etc.

- DCI is more complicated than it seems and ongoing research is still, ongoing. it's all about safety, understanding stuff to your limits and comfort of your holiday and others.

- promoting more dive education - heh heh, u should know never to miss deco stop, esp. if u made a v big breach in NDL, or doing multi day diving in LOB as your NTU is building up over the days (ie. you don't enter the water 'clean' becos of multi diving in 24 hr period). so how? emergency deco procedures can be read up, or, do a course of course..lol. perhaps to interest you, in relation to this could be learning/practice of a) dive com fail, or bottom timer or depth gauge fail scenario, b) breach NDL w/o suff. gas for completing deco, c) communication with surface support when in-water for a) and b), and d) incorrect gas setting for the dive you already in.

- DCI factors include many 'non-dive' things, such as hours of sleep, alcohol intake & time of last intake, food, hydration, diesel fumes, etc..a nice hot coffee/biscuit combo after going down always perks you up
Title: Re: DCI, anyone here had it before?
Post by: Crash on 23 Feb 15, 05:01
It was the first time my relatively new dive comp had exceeded NDL and I didn't know the steps to take.

Had alerted my guide about exceeding NDL, and we proceeded to do a deco stop. But strangely after seeing that my dive comp got locked out, he aborted the deco stop and said to surface. Between the both of us, he was the dive professional and so I thought he knew what he was doing. He turned out to be an instructor and it was only through talking to instructor friends back home did I realize what had happened.

It was fortunate that it wasn't DCI in the end though. As to why I exceeded NDL, I would usually check my limits quite often, but I did a lot of dives then, 17 in 6 days, that plus I guessed I had failed to keep an eye on my limits during that dive, only noticing it after I had exceeded NDL


what dive comp are you using? very strange that it locked up underwater during the dive when it should switch to deco mode. as far as i know, for suunto dive comps it'll beep if you are nearing your NDL and if you exceed NDL (or even exceed ascent rate) the dive comp will enter deco mode or add a mandatory deco stop on top of the reccomended safety stop. it will instruct you to stay within the displayed depth zone for your deco stop and not break the depth ceiling and floor as displayed on the dive comp. once deco obligation has been performed, you can slowly make an ascent and after which you should not dive anymore for an extended period; best if you breathe in 100% O2 straight away. if symptoms show up, proceed to a local medical centre immediately. do bear in mind that all this deco stops are only viable with enough air in your tank. if you are down to your last few bars and your buddy/dm is nowhere to be seen, then good luck to you.

and like others have mentioned, be very familiar with your dive comp and ALL its functions. since its your personal one, you have no reason for not doing so. read up the manual religously especially the functions that you rarely use or see. if the manual is a hassle to carry along, download the pdf version to your phone so you can read up before your dive trip, in the airport or on the plane; thats what i personally do. you may also wanna read up on deco procedures in the event you exceeded NDL and your comp fails; extra knowledge nice to have. my ssi doppler no deco limits table i got from my owd has a section on it. but more importantly what happend to buddy system? you guys didn't check each other's remaining air and NDL periodically during the dive? or did guys rely that on your dive guide as well?

i'm very curious though as to why the dive guide got you to ascend after you exceeded NDL. its like asking you to drive back home knowing you are completely drunk. the least he could do was to make a safety stop if he wasn't sure. even when we don't exceed NDL we would still do safety stops. might wanna feedback this to your dive club or the Dive centre management. dive safe!
Title: Re: DCI, anyone here had it before?
Post by: lybc on 23 Feb 15, 08:14
Most dive comps would have a alerting mechanism when the diver exceeded his/her bottom time. Once exceeded, it will go into deco mode before locking out. Guess TS might have missed out part 1. Better check how the dive comp alerts you once bottom time is exceeded (usually by beeping sounds).

Signs of DCI includes giddiness, numb body parts. In doubt, better get it checked. Else once you board the flight, you are putting yourself in unnecessary risk of aggravating DCI.
Title: Re: DCI, anyone here had it before?
Post by: hafidz_x on 03 Aug 16, 15:31
Was browsing through the forum and decided to share my experience on DCI here which I think will help other divers in the future.

May 2015 my 3 friends and I signed up for a 4D3N dive package with a dive company in Mabul Island. We have a total of 13 dives throughout the period and on the 11th dive at Similan Island, without any sign or symptom, I experienced difficulty breathing at 6 metres depth and I lost control of my lower limb. I was in the brink of passing out and uncontrollably i ascended automatically to the surface, lost my ability to talk and move my limbs and then passed out when brought on the speed boat.

I was given 100% O2 and after a two hour speedboat and ambulance to Semporna Hospital, I was brought into a decompression chamber for 5 hours. I was revived by then but sadly I couldnt walk. The next day at the hospital I was surprised that the doctor say I will be able to walk in the next few days and since the dive occurred more than 24 hours ago already. I took my scheduled flight back from Tawau to Johor with the help of my friends and once i reached SG, I went straight to SGH.

The doctors there admitted me and gave 100% O2 oxygen again. They said I had a severe DCI. The possibility of me not walking again is high. For the next 7 days I was in SGH and went through 5 days of decompression in the chamber at a total of 24- hours. Recovery was slow but I managed to feel my legs again at the third day. I was discharged on the 8th day and start to train my legs to be normal again. I still have a numbness tingling sensation sometimes in my left knee area which I guess is permanent as I tried TCM and consult a few experts but to no avail. It does not really affect my job and physical fitness (Im a firefighter) so I lived with this till today.

Both the dive company and medical staff of Semporna and SGH Hyperbaric and Diving Medicine handled the situation professionally. My personal hospital insurance settled my near $45000 bill (1 hour in chamber is $900+ in SGH, 1 x admission inside Semporna Hospital chamber is 50RM) On top of that I claimed daily hospitalisation benefits from my personal travel/accident insurance (MSIG Plan A which covers scuba diving up to 30m depth) The company could have also paid for the bill since they cover diving too if my hospital insurance didn't cover it.

The moral of the story is actually you can get DCI without any sign or symptom. The dive currents were bad and the dive doctor at SGH said that I was diving in a yo-yo profile (up and down, changing depths frequently)  I was the fittest in the group, everyone was diving the same way due to bad currents for the past few days but I was the only one who got it. The only signs I got was multiple yawns during lunch before the 11th dive which I got the DCI.

I am still diving though, and went for my first dive after recovery in the great barrier reef last year December but I restrict myself to only two dives per day and nothing happened to me. I bought a dive watch which would alarm me if I ascend too quick and made sure I know where's the nearest chamber in the country Im diving.

Thanks for reading, dive safe

Title: Re: DCI, anyone here had it before?
Post by: fusionx99 on 04 Aug 16, 02:32
Was browsing through the forum and decided to share my experience on DCI here which I think will help other divers in the future.

May 2015 my 3 friends and I signed up for a 4D3N dive package with a dive company in Mabul Island. We have a total of 13 dives throughout the period and on the 11th dive at Similan Island, without any sign or symptom, I experienced difficulty breathing at 6 metres depth and I lost control of my lower limb. I was in the brink of passing out and uncontrollably i ascended automatically to the surface, lost my ability to talk and move my limbs and then passed out when brought on the speed boat.

I was given 100% O2 and after a two hour speedboat and ambulance to Semporna Hospital, I was brought into a decompression chamber for 5 hours. I was revived by then but sadly I couldnt walk. The next day at the hospital I was surprised that the doctor say I will be able to walk in the next few days and since the dive occurred more than 24 hours ago already. I took my scheduled flight back from Tawau to Johor with the help of my friends and once i reached SG, I went straight to SGH.

The doctors there admitted me and gave 100% O2 oxygen again. They said I had a severe DCI. The possibility of me not walking again is high. For the next 7 days I was in SGH and went through 5 days of decompression in the chamber at a total of 24- hours. Recovery was slow but I managed to feel my legs again at the third day. I was discharged on the 8th day and start to train my legs to be normal again. I still have a numbness tingling sensation sometimes in my left knee area which I guess is permanent as I tried TCM and consult a few experts but to no avail. It does not really affect my job and physical fitness (Im a firefighter) so I lived with this till today.

Both the dive company and medical staff of Semporna and SGH Hyperbaric and Diving Medicine handled the situation professionally. My personal hospital insurance settled my near $45000 bill (1 hour in chamber is $900+ in SGH, 1 x admission inside Semporna Hospital chamber is 50RM) On top of that I claimed daily hospitalisation benefits from my personal travel/accident insurance (MSIG Plan A which covers scuba diving up to 30m depth) The company could have also paid for the bill since they cover diving too if my hospital insurance didn't cover it.

The moral of the story is actually you can get DCI without any sign or symptom. The dive currents were bad and the dive doctor at SGH said that I was diving in a yo-yo profile (up and down, changing depths frequently)  I was the fittest in the group, everyone was diving the same way due to bad currents for the past few days but I was the only one who got it. The only signs I got was multiple yawns during lunch before the 11th dive which I got the DCI.

I am still diving though, and went for my first dive after recovery in the great barrier reef last year December but I restrict myself to only two dives per day and nothing happened to me. I bought a dive watch which would alarm me if I ascend too quick and made sure I know where's the nearest chamber in the country Im diving.

Thanks for reading, dive safe


Thanks for sharing your story... Alot to learn from your incident. Not many Real life DCI article in this forum. Thanks!!!


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Title: Re: DCI, anyone here had it before?
Post by: DIN on 04 Aug 16, 17:52
Thank hafidz_x for sharing your experience. Hope you are fully recovered. DCS can happened to anyone without warning bt I do have a question though. Did you have a dive computer then?
Title: Re: DCI, anyone here had it before?
Post by: hafidz_x on 05 Aug 16, 08:18
Yes we were all wearing dive computers then
Title: Re: DCI, anyone here had it before?
Post by: Jordan76 on 05 Aug 16, 10:25
Thank you hafidz_x for sharing. It's something we really cannot presume to "won't happen to me".

I always set alarm on my dive comp for depth and time as a reminder. Some might think I'm too "kia-see"... but i'd really prefer to dive more, live longer.  :)

Dive safe people!
Title: Re: DCI, anyone here had it before?
Post by: horseshoecrab on 05 Aug 16, 11:38
Thanks for sharing your experience hafidz_x. Hope you will fully recover soon. Glad you are back diving again.