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Quiz - Physiology - Poorly Adjusted Regulator

Discussion in 'Basic Scuba Discussions' started by Pedro Burrito, May 23, 2020.

Breathing from a poorly adjusted regulator or swimming against a strong current may cause ___.

  1. a. rapid, shallow or labored breathing

  2. b. hypercapnia or excessive CO2

  3. c. overexertion

  4. d. all of the above are correct

Results are only viewable after voting.
  1. Pedro Burrito

    Pedro Burrito Moderator Staff Member ScubaBoard Supporter

    # of Dives: 5,000 - ∞
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    From the Physiology Section of the PADI Dive Theory Exam:

    Breathing from a poorly adjusted regulator or swimming against a strong current may cause ___.

    a. rapid, shallow or labored breathing

    b. hypercapnia or excessive CO2

    c. overexertion

    d. all of the above are correct


    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.
     
    scubadada likes this.
  2. Angelo Farina

    Angelo Farina Marine Scientist

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    Of course, these negative consequences can happen only if the diver has not been trained to complete voluntary breathing control, and he is not equipped with proper powerful fins, being trained and fit to use them properly...
     
    Bob DBF likes this.
  3. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

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    Lets see... moored in a 4+ knot current, it is 85 degrees out, and you are fully kitted up for cold water, and have to haul yourself to the buoy/down line.....

    This is a normal dive.
     
  4. Angelo Farina

    Angelo Farina Marine Scientist

    # of Dives: 1,000 - 2,499
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    You describe a completely different scenaro. The question is about using a detuned reg (not a failed reg) or swimming against current.
    I you can swim against it, the current is necessarily modest, slower than your swimming speed.
     
  5. rhwestfall

    rhwestfall Woof! ScubaBoard Sponsor

    # of Dives: 200 - 499
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    who said failed reg?

    The question is about the cause of CO2 loading from a poorly tuned regulator (not meeting your needs), which can be exacerbated by my comment, which fits as you see the possible acceptable answers. You claim it to not be possible if you have (1) training and (2) strong fins (you are sounding like Dan Volker)...
     
    scubadada likes this.
  6. Angelo Farina

    Angelo Farina Marine Scientist

    # of Dives: 1,000 - 2,499
    Location: Parma, ITALY
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    Of coirse, wathever the fins anf the thrust you can get from them for a sustained time, there is a limit speed for the current you can swim against. Exceeding that limit will cause the effects described.
    So I agree that there is always a current too strong, wathever the fins and the muscles.
     
    Bob DBF likes this.
  7. Frackingawesome

    Frackingawesome Nassau Grouper

    # of Dives: 100 - 199
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    This should not even be a question.... dont dive with equipment that is not up to the task you are asking it to perform. If you have a badly adjusted reg get it serviced or learn how to adjust it properly.

    Strong current is subjective... dont dive if the current is too strong for you. talk to you dive guid or ask locals for knowledge on currents and or tides before you go diving and know you limits.
     
  8. Pedro Burrito

    Pedro Burrito Moderator Staff Member ScubaBoard Supporter

    # of Dives: 5,000 - ∞
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    d. all of the above are correct
     
  9. Snoweman

    Snoweman Loggerhead Turtle

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    I picked D, for Duh!
     
    couv likes this.
  10. Mike1967

    Mike1967 Manta Ray

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    Location: Victoria, Australia
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    Same thing right?
     

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