Anxious at Nine Feet

[grazie42]

I also feel these anxiety attacks can be a blessing in disguise, specially at the depth Rick had it...If you dive enough you will likely experience one of those at depth, you NEED to work trough it...

I think Diver0001 had a set MO for these things...something like: breath-look at spg-breath-look at depthmeter-breath-look at buddy-breath...You need to focus on something that takes your immediate attention away from the anxiety...at least that´s what I´ve done the few times it´s happend to me...

Continued training is about expanding your comfort zone, if it didn´t take work, everyone would do it...

I think Rick has said before that he´s taking IANTD (advanced?) Recreational Trimix.
It´s a one-decogas class that takes you to a max of 150ft...

Regarding stops...V-planner let´s you move your time at shallow stops (10-30ft) without penalty...It does the same for the stops at any gas-switchpoint, that I´ve tried, without penalizing you for it(actually shortens deco sometimes) ...

 

[limeyx]

Rick,

I think I misread your V-Planner time. I think what confused me was that you did not extend the stop at 70ft to take advantage of the higher pp. Since the asc to 70 and the asc to 60 both show at 26 minutes, but the gas switch happens, I am assuming that you just did a gas switch and continued the ascent without a stop. I was just curious about it.

I was also going to mention that the bottom mix was a bit rich perhaps, as I was taught not to go above 1.4, and preferably keep things at 1.3 if possible.

What class was this? It seems strange (to me) that someone could take a trimix class but not be allowed to carry oxygen. But it would have given you two gas switches on a 45 minute dive. Maybe not the best idea. And if you're sensitive to high oxygen partial pressures as has been suggested, it might have made things worse rather than better.

Thanks for sharing this real world example. It's been very helpful.

GUE tech1 only teaches you to have 1 slung bottle. For deco, either 50% or 100%
For Tech1 dives (up to 160 or so feet), the 50% is a better choice as it lowers the amount of bailout gas you need to get to the next gas, and with O2 only you get really shallow, so in theory will bubble more.

2 deco gases is overkill for that dive.

I would have used 21/35 and reduced the PP02 on the bottom, followed up with 2 min stops at 70 and 60 for the O2 window. with 15 or so mins total deco.

 

[lamont]

nitr-ox = hyperoxic N2+O2 mix
heli-ox = hyperoxic He+O2 mix
tri-ox = hyperoxic N2+He+O2 mix (i guess v-planner also calls 21/35 triox as well)

 

[in_cavediver]

nitr-ox = hyperoxic N2+O2 mix

Actually any N2-O2 mix, hypoxic, normoxic or hyperoxic

heli-ox = hyperoxic He+O2 mix

Actually, any He-O2 mix (no N2)

tri-ox = hyperoxic N2+He+O2 mix (i guess v-planner also calls 21/35 triox as well)

Yep, triox is just a hyperoxic trimix blend (any He-O2-N2 mix) This also has been called Hot-X by NAUI

And to add one more -
Heli-Air=HE+Air blend, always hypoxic

One other blend which I don't know a 'special' name for other than trimix is He+Nitrox (no O2 added). This is a good way to use banked nitox to make mix.