An
essay about high altitude sickness
When Climbing Higher
As pilgrims visit Mt. Kailash Mansarovar (4550m.)
Darchen (4700m), Gosainkunda (4300m), Lhasa (3685m)
or even Everest Base Camp (5800m), high altitude illness
becomes a problem. Altitude illness usually occurs at
an altitude above 2500m.
There are there main forms Acute Mountain Sickness
(AMS), High Altitude Cerebral Edema (HACE), High Altitude
Pulmonary Edema (HAPE). Environmental temperature decreases
at an overage of 6.5 degrees Centigrade per 1000m gains
in elevation. Due to the cold the amount of oxygen required
to maintain the body temperature also increases.
Ultraviolet (UV) light penetration increases four
per cent every 300 m gain in altitude, which increases
the danger of snow blind less, sunburn and long - term
skin cancer. UV lights also reflected snow and ice,
which can produce temperature of 40 to 42 degrees centigrade
in enclosed spaces. In tents heat exhaustion becomes
a real danger. It also causes dehydration as result
of hyperventilation and increased work.
AMS will be apparent within four to 36hrs of ascent
to the altitude of 25,00 to 3,000m after ascent. The
rate at which different individuals acclimatize is unaware
and continues the ascent, it may lead to HACE.
Myalgia, high fever or diarrhea is not a part of AMS;
Physical examination is equally nonspecific and usually
normal. ACCORDING TO THE ACUTE Mountain Sickness (AMS)
self-assessment (The Lake Louise Consensus Scoring of
AMS-Canada), individual will suffer headache with at
least a few hours stay at the new altitude with gain
in altitude:
- Weakness or fatigue (Mild, moderate, severe)
- Gastrointestinal symptoms such as anorexia to nausea
- Dizziness or light - headed - ness (mild, moderate,
service)
- Sleeping
Severe or more means that the individual is
suffering from AMS.
Risk factors |
Symptoms |
- Ingestion of sleeping
- Obesity
- Residence altitude less then 900mm -Weakness
or less excrcise
- Age less then 40 years -Central cyanosis (blue
- Respiratory tract infection
- Physical exhaustion
(increased respiration)
- Low oxygen saturation
(increase pulse rate)
- Rate of ascent
- Cold
|
- Dyspnoea at rest
- Cough
- Weakness or less
- Central cyanosis tongue,lip, nail bed)
- Wheezing
- Tachypnoea
- Tachycardia
|
HACE: Requires
one to three day to develop. Sometimes progression to
HACE from mild AMS occurs in 12 hours also. It is an end
stage of severe AMS in the event of rapid rise in altitude,
either with a presence of a change in mental status and
or ataxia in a person with AMS. Tandem gait test is the
best like catwalk. Symptoms of HACE are worst at night.
Once coma develops, mortality is over 60 percent. HACE
is characterized by Ataxia, extreme lassitude and altered
level of consciousness in the from of confusion, impaired
thinking, drowsiness and coma.
HAPE: It usually occurs
within two for days of ascent to an altitude of more
then 2500m, most commonly on the second night, Younger
persons i.e. less then 20 years of age are more susceptible.
Golden rules
- If an individual has development any sickness at
an altitude, the symptoms are due to the altitude
until proven otherwise.
- If a person has developed any altitude symptoms,
s/he should not go any higher.
- If a person feels very ill or cannot walk heel
to toe in a straight line, has short breaths at rest,
descend immediately.
- If a person has altitude illness, a responsible
companion must always accompany him.
Recommendations:
- If there is any trouble, always stay
at the same altitude until the symptoms go away, rest
and drink plenty of fluid three to four liters per
day. Urine should be clear.
- Eat high carbohydrate diet (70 percent
calorie). Light activity during the day is better.
- Avoid alcohol, sleeping medication
and tobacco. Don't carry pocks weighing more 10 kg.
- Avoid exposure to the cold; ventilate
tents and snow shelters when cooking.
- Avoid about transport to above 3,048cm.
Acclimatize for three nights before going any higher.
Don't fly or drive to high altitudes. Always start
below 3,048m.
- If you do flu or drive don't exert
yourself or move higher for the first 24 hours. If
you go above 3,048m, for every 305m, take a day's
rest and for every 915m, take a two three days rest.
- If symptoms increase, return back
to base as soon as possible and visit the doctor.
|