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Note 44.372 MOUNT-L 372 of 517 CUPIDO::STRITAR "Andrej Stritar,IJS,(61)-371-321" 64 lines 18-MAY-1994 13:23
CUPIDO::STRITAR "Andrej Stritar,IJS,(61)-371-321" 64 lines 18-MAY-1994 13:23
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Subj: Re: Altitude acclimatization

Date: 17-May-1994
Posted-date: 17-May-1994

>
> I am interested in your practical advice and experience for avoiding
> the high altitude discomforts of headache, nausea, etc. as well as
> the dangers of pulmonary or cerebral edema that go beyond the
> obvious caution to allow time for acclimatization and gradual
> ascent. I live at 7000 ft and am talking about trekking at 14000 to
> 17000. Any suggestions?
>

Personally, I have never had any problem going from sea-level to 14000
quickly. Most of the time I don't notice anything but sometimes I
have a slight "weak" feeling. I have noticed that resting heart rate
is a higher for the first day or 2. I must say however, that this is
not normal behavior. Most people get quite ill if they rush up to
14000 feet. I realize that I could get very ill the next time I do
this. There are no guarantees.

Rushing well above 14000 though is quite a different story. My
resting heart rate was quite high (100 compared with 60 at sea level)
after going from sea level to 15750 in 40 hours. After 8 hours
resting at 15750 my heart rate dropped to 80 and I went to 16750 and
felt fine. I then went back to 15750 and 24 hours later I went to
19300, but above 18000, any distraction from the rapid breathing that
my body wanted to do, resulted in a slight headache, which would go
away as soon I could resume rapid breathing. On the summit at 19300,
even without any headache, I felt like my body had nothing left to
give. Sort of a "drained" feeling, undoubtly from the severe hypoxia.
After decending to 15750, I felt normal again.

However, after being at 8000 to 13000 feet for 2 weeks I then went to
20700 and felt strong. Obviously, after proper acclimatization I was
in much better shape to go to high altitude. Resting heart rate was
also much lower.

Here's a few pointers that I have read or been told. There are books
that will explain this much better than I. Most drugs including
alcohol, caffeine, pain killers etc. should be avoided. Also, get
proper nutrition, get plently of calories (but don't eat to much fat
as it doesn't digest as well under hypoxia), and drink lots of water.
I often drink well over 1 gallon (sometimes 2) a day on long high
altitude climbs. Your body will be under enough stress at high
altitude, so don't aggravate the situation by not taking excellent
care of yourself. Also, if your resting heart rate is around 100
don't go any higher. If it's above 110 you should descent. Of course
this assumes your 25 to 35 years old and in excellent physical shape.
Don't take this info as well proven fact either.

Anyway, the point to this is to listen to your own body carefully and
treat it well. People vary greatly in what they can do and many think
I am crazy to rush up to high altitude, because of the high risk of
HAPE, etc. I must admit that rushing up to 19300 in 80 hours from sea
level is not smart.

Willie Hunt

PS

I am off to Mt. Logan this summer, but I will spend 30 days getting to
19545 feet, which is plenty of time for proper acclimatization.

***pico
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