Quiz - 12 - Diving Knowledge Workbook - Diving Physiology

Hypoxia results when the diver's carbon dioxide level cannot accumulate to a level high enough to st

  • a. True

  • b. False


Results are only viewable after voting.

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

Pedro Burrito

Moderator
Staff member
ScubaBoard Supporter
Scuba Instructor
Divemaster
Messages
3,238
Reaction score
2,452
Location
Boussens, Canton de Vaud, Suisse
# of dives
5000 - ∞
From the Diving Physiology Section of the PADI Diving Knowledge Workbook Version 2.02 © PADI 2009:

2.4 Question 2

Hypoxia results when the diver's carbon dioxide level cannot accumulate to a level high enough to stimulate breathing before the tissues consume the available oxygen.

a. True

b. False

I will post a daily question from my exams to help newer divers and to encourage more experienced divers to interact gracefully and helpfully with the newer divers.

Reminder - this is a post in the Basic Forum and it is a green zone. Please be nice and on topic.

Thank you for your patience while we try to give people something to discuss other than Covid-19 and/or Politics. I will post the answer covered by the spoiler tag later today.
 
Wow. I had to dig for that one. Not a fan of the wording, "Hypoxia results..."
as it's not the only way Hypoxia can occur when diving. But, I guess when we are talking OW courses that is the explanation for the dangers of hyperventilating underwater.
 
Wow. I had to dig for that one. Not a fan of the wording, "Hypoxia results..."
as it's not the only way Hypoxia can occur when diving. But, I guess when we are talking OW courses that is the explanation for the dangers of hyperventilating underwater.
I think the questions refers to free diving...
It describes what happened to me twice. Then, after passing out the second time, I gave up free diving! TOO DANGEROUS...
I do not see any way that you can get an hypoxia while diving in open circuit with air or Nitrox.
Instead, hypoxia was a typical risk of using a CC rebreather, which was the device we mostly used during my initial training in 1975.
 
Right. I can't recall reading about actual hypoxia while scuba diving, only while freediving. Let's see if it meant freediving. I wonder if it is technically possible to occur while on open circuit scuba?
 
I think I vaguely remember this from nursing school...something about C02 drive
 
Looks like I am with the large minority on this one.
 
I can't recall reading about actual hypoxia while scuba diving, only while freediving.
I just finished the TDI Advanced Nitrox theory last night, it's in there. There's even a question about it in the final exam :)
 
I just finished the TDI Advanced Nitrox theory last night, it's in there. There's even a question about it in the final exam :)
So, one can get hypoxia while breathing Nitrox in open circuit? This is something I really did not know...
 
So, one can get hypoxia while breathing Nitrox in open circuit? This is something I really did not know...
Only thing I can think of is someone may be breathing excessively, perhaps in a current or during panic and then ascend?
 
https://www.shearwater.com/products/peregrine/

Back
Top Bottom