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Dealing with rapid altitude change?


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  • #1224173
    Chad Mason
    Spectator

    @porch13

    Locale: Arizona

    Hello all,

    I'll be doing a hike this weekend where, including drive time, I'll go from 1450' to 12,633' in under six hours. I've done it before, but suffered a wicked headache and nausea. Other than staying hydrated, are there any other tips to minimize the effects of the altitude?

    Thanks!

    #1395764
    kevin davidson
    Member

    @kdesign

    Locale: Mythical State of Jefferson

    An overnight camp near the trailhead before setting off on your hike, would probably help. Acclimitization is the single biggest thing you can do (and control). You are in good overall physical condition? Just sorting out other possible variables.

    Even though altitude sickness can strike even people in good physical shape. Some people have a genetic propensity for either getting (or not getting) sick.

    #1395771
    Christopher Chupka
    Member

    @fattexan

    Locale: NTX

    Chad,
    I use Diamox when I got to Colorado for climbing/backpacking trips. Even as a child I suffered fairly dramatically from the effects of altitude. The Doc I have prescribed twice daily 250mg, this leads to the frequent urination, bad taste of carbonated drinks, and infrequent tingling sensation in fingers. Next trip I will try a twice daily 60mg dose which should alleviate all the negative symptoms. I live in Wichita Falls TX at an approximate 950 foot elevation and along with the Diamox and 1 days acclimatization I can function at 14000 feet.

    The med really helps with headaches. There have been no side effects and Diamox is a relatively benign drug. The only behavior I have changed is increasing hydration at altitude which is a bonus anyways.

    #1395774
    Graham Williams
    Member

    @crackers

    i recently went from 0' to 13k+ in about an hour and a half. I spent about two hours at 13k and then descended.

    traditionally, i've acclimatized like crap. This time, I had no problems at all.

    I found that drinking a lot of water and eating a copious amount of real chocolate really worked the trick. I also spent 37 minutes acclimatizing at 9400'.

    However, I believe that the greatest contribution to my improved acclimitization was from crossfit. Call me crazy, but it's something that a number of people I've spoken with have also noticed.

    Have fun…

    #1395779
    kevin davidson
    Member

    @kdesign

    Locale: Mythical State of Jefferson

    It's not a silver bullet—- it doesn't work right away, you need to do a regime.
    http://en.wikipedia.org/wiki/Acetazolamide
    and it has limitations in efficacy.

    I've used this in extremely high altitude settings—in S.America and Asia.

    I like the chocolate route…

    #1395781
    Graham Williams
    Member

    @crackers

    the chocolate thing was interesting. the sage wisdom came from a fellow who's been there, done that and who supplies the packs that i make to some of his ambassadors. he basically recommended eating half a large bar of at least 60% cacao every 2 to 3 k feet of gain.

    Who knows, but one trip up is not a result. My silly personal anecdote is that I ran around, did squats and pushups and burpees and for the first time in my life, no headaches, no dizzyness and no puking.

    Then again, maybe I'm just slower …

    #1395806
    John S.
    BPL Member

    @jshann

    Any other tips…hmmm…you could try this before and on day 1,

    John's Ten Essentials to acute mountain sickness prevention:

    1. several days before trip: stop drinking caffeine and alcohol
    2. one day before hiking: drink several glasses of water during the day
    3. two hours before hiking: take one 325 mg aspirin every 4 hours for a total dose of 3 tablets
    4. drink plenty of water
    5. eat plenty of food
    6. hike at a slower pace
    7. take hourly rest stops
    8. when get to camp, sit down and rest for at least 20 minutes before putting up shelter
    9. avoid bending over with head below waist level while setting up shelter or while doing anything the first day
    10. get at least 8 hours sleep the first night

    let us know the results..on day two do as usual

    #1395826
    Rick Dreher
    BPL Member

    @halfturbo

    Locale: Northernish California

    The following link has a thorough rundown, and seems to be up to date on the topic.

    http://www.ismmed.org/np_altitude_tutorial.htm

    I was disappointed to read that ginkgo has been more or less dismissed as being any help; at one time it looked promising at fending off mountain sickness. Good hydration and not overdoing it the first or two day seem to be the most important parts of my regimen (not that that second bit works for a day trip!).

    #1399987
    Rob Blazoff
    Member

    @genetic

    Locale: Out back, brewing beer in BPA.

    To partially acclimate could take 6 or 7 days Full acclimation can take 4-6 weeks.

    #1400037
    Anonymous
    Inactive

    Lots of good suggestions here. Three others: 1) Don't hang around long once you summit. Immediate descent will help mitigate symptoms of the severe physiological stress you are subjecting your body to( a day hike application of the Russian climbing axiom that states 'climb high, sleep low'; 2) Pay attention to your breathing, by which I mean hyperventilate. According to McArdle, Katch & Katch in "Exercise Physiology, Energy, Nutrition, & Human Performance", hyperventilation and elevated heart rate are the primary initial responses to the progressive reduction in the partial pressure of O2 as you ascend. Heart rate adaptation is automatic, but you can control your breathing to some extent and compensate for reduced partial pressure of O2 by passing more air through your lungs; 3) Take primarily carbohydrates mixed in H2O to make a 6-8% solution for energy. There are a number of commercial offerings(Perpetuem by Hammer and EFS by 1st Endurance are two I have had experience with-IMHO EFS would work better for what you are attempting since it uses glucose as the energy substrate-nothing gets into your system faster-and also supplies a full spectrum of electrolytes, which Perpetuem does not). Good luck, sounds like an "excellent adventure".

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