Re: [John Muir Trail] New research on altitude sickness, risk profile, and prevention
- Thanks, John.Great links.Viraj
From: John Ladd <johnladd@...>
Sent: Sat, March 26, 2011 2:52:20 PM
Subject: Re: [John Muir Trail] New research on altitude sickness, risk profile, and prevention
Before getting too worried about this, note that these are rates if you go from sea level immediately to the elevations stated with no gradual acclimation at all.
Title of the chart is:
"Projections for proportion of unacclimatized troops who will get sick at high altitudes"
The Army needs to know about this because soldiers can be airlifted or parachuted from sea level on one night to altitude on the next day/night without any time at intermediate altitudes. Backpackers who follow standard recommendations -- start at 8,000 feet or lower and sleep no higher than 1,200 feet higher on each of the successive nights -- would presumably have way lower incidence rates than these.
For more detail on Army findings and recommendations, see this report
Altitude Acclimatization and Illness Management Guidelines
An anti-inflammatory like Ibuprofen can help minimize the chance of developing altitude problems. Discussed in our prior thread:
John Curran Ladd
1616 Castro Street
San Francisco, CA 94114-3707
415-648-9279On Fri, Mar 25, 2011 at 10:56 AM, Judith <judithsmcguire@...> wrote:
Perhaps of interest to JMT readers is research DOD is doing on high altitude.
I was interested to see the following table of susceptibility to altitude sickness:
Projections for proportion of unacclimatized troops who will get sick at high altitudes.
10,000 feet â€" 25-35%
11,500 feet â€" 50-60%
13,200 feet â€" 80-90%
14,800 feet â€" 90-100%
Source: Stephen Muza, U.S. Army Research Institute of Environmental Medicine