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    Any opinions of the Dive Rite XT1 / XT2 reg package?

    I was thinking about buying these but it looks like they are only available in sort of a tech diver configuration with a long hose wrapped around your neck. Does someone sell them in standard primary and octopus configuration?
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    Villa Aldora Updates?

    Stayed there during the last week of June. Did miss Chris (and Chris) who was a character, but I think Betsy probably doing just as good a job or better. No bugs. It was clean. No complaints. In fairness the style of the rooms could probably use an update. Tile countertops and leather topped...
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    June 2021 Roll Call

    I love aldora. Have stayed in the Villa. But, I don't think these lionfish trips happen anymore. I asked every day last time we were there. Not enough interest to get an afternoon boat going. The lionfish population is (thankfully) pretty small and decreasing. That has the interest going down...
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    June 2021 Roll Call

    My wife and I will be diving with Aldora, Staying at the Villa Aldora, June 23-30.
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    AED pad placement

    The way to think of it is that you want a straight line from one pad to the other to cross the heart. The rest is details. For example an adult AED can be placed on a child by placing one pad on the chest and the other on the back.
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    Hemoglobin saturation levels

    Hemoglobin leaving the lungs is generally near saturation (even at standard pressures) The environment of the lungs increases the affinity of hemoglobin for oxygen via a basic biochemical mechanism known as allostery. Essentially this means that factors in the lungs causes changes in the shape...
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    Using resuscitation mask in water

    Not a rumor at all. The study you refer to was the reason the new AHA CPR recommendations were instituted ("new", guess its been a couple of years now). Its becoming pretty clear that the old "ABC" was way off and should have maybe been "CAB". That is, outcomes with compressions alone are...
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    Cpap

    You can always set the patients vent to something like bipap...which is pretty much just fancy cpap. Of course they have to be intubated.
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    How does oxygen treat DCS/AGE?

    I'd think of two mechanisms: 1. Increased nitrogen gradient helps you breathe off nitrogen faster. In theory that should result in faster bubble shrinkage, barring some sort of bubble surface gas-liquid interface strangeness. 2. Oxygen is given to stroke victims with the rationale that the...
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    OOA + Missing buddy + Breath hold safety stop?

    Ohms law is heavily used in physiology....although sometimes they give it different names... In physics Current (I) = Voltage/Resistance Voltage is also called potential difference....which if I remember correctly is the difference between charges on the two sides of a resistor (or whatever...
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    OOA + Missing buddy + Breath hold safety stop?

    This would do very little per Ohms law. The partial pressure of N2 in the blood would equilibrate with the partial pressure of N2 in the air in the lungs. At this point there would be no pressure gradient, thus no driving force to move N2 out of the blood.
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    College/ High School Students

    Hey Brutus. I'm an OSU (grad)student. Just got my ugrad from osu last year. I didnt realize osu's scuba club was an active organization. Are there meetings? How would one get involved?
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    Some Comments after Nitrox Certification

    I think what you're talking about is the difference between training and education. Diving is something that seems to fall under training. Training can be great because it is a fast way to teach a skill. The downside is that you have to use set in stone rules or protocols or similar rigid...
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    Popping ears

    I'm just curious, what is the non-drug treatment for..say... acute septicemia? It would be great if we could stop poisoning these patients with multiple antibiotics and instead fix them by cracking their backs!
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    Rescue ascension

    I suspect you are over-estimating the frequency of the occurance of laryngospasm and how tight the spasm is. I suspect that laryngospasm will only occur occasionally and even then only rarely to the extent that the patients airway would be totally occluded. I have seen only one case of...
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    the symptom called asthma-a case study

    Wow...great post BillP. I have not seen good evidence for any chiropractic treatment except for low back pain, where its benefits over placebo are small but extant. What recieves little attention is the very real danger posed by these "therapies". Chiropractic is dangerous for two reasons...
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    Question about swimming ability

    I dont think there was a time limit on the swim, just some set distance (10 yrs ago anyway...). If that is still the case and you get tired...roll onto your back and swim...its just like floating (cant think of the name of the stroke right now?). Nice a relaxed way...could probably swim miles...
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    Limits? Safety stops? Conflicting info- help?

    These are the limits I remember from my PADI course. The 60 feet was not emphasized, but the 100ft was emphasized as the limit. ie plan dives to no deeper than 100ft, that way if you accidentally go too deep it is to 110 or 120 or 130 instead of 140 or 150 or 160.
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