Annapurna region

Annapurna region

Annapurna region is located north side of...

Everest Region

Everest Region

By name, you can guess it's the land of Mt....

Langtang Region

Langtang Region

Langtang-Helambu is in the north of Kathmandu...

Kathmandu

Kathmandu

Kathmandu Sightseeing Tour The Kathmandu...

Chitwan

Chitwan

While the high Himalaya makes up Nepal's...

  • Annapurna region

    Annapurna region

  • Everest Region

    Everest Region

  • Langtang Region

    Langtang Region

  • Kathmandu

    Kathmandu

  • Chitwan

    Chitwan

Altitude sickness

Altitude sickness—also known as acute mountain sickness (AMS), altitude illness, hypobaropathy, or soroche—is a pathological effect of high altitude on humans, caused by acute exposure to low partial pressure of oxygen at high altitude. It commonly occurs above 2,400 metres (8,000 feet). It presents as a collection of nonspecific symptoms, acquired at high altitude or in low air pressure, resembling a case of "flu, carbon monoxide poisoning, or a hangover". It is hard to determine who will be affected by altitude sickness, as there are no specific factors that correlate with a susceptibility to altitude sickness. However, most people can ascend to 2,400 meters (8,000 ft) without difficulty. Acute mountain sickness can progress to high altitude pulmonary edema (HAPE) or high altitude cerebral edema (HACE), which are potentially fatal.

High altitude 5,000 to 11,500 feet (1,500 to 3,500 m) - The onset of physiologic effects of diminished inspiratory oxygen pressure (Pio2) includes decreased exercise performance and increased ventilation (lower arterial Pco2). Minor impairment exists in arterial oxygen transport (arterial oxygen saturation [Sao2] at least 90%), but arterial Po2 is significantly diminished. Because of the large number of people who ascend rapidly to altitudes between 8,000 and 11,500 ft, high-altitude illness is common in this range.

Very high altitude 11,500 to 18,000 feet (3,500 to 5,500 m) - Maximum Sao2 falls below 90% as the arterial Po2 falls below 60mmHg. Extreme hypoxemia may occur during exercise, during sleep, and in the presence of high altitude pulmonary edema or other acute lung conditions. Severe altitude illness occurs most commonly in this range.[11]

Extreme altitude (above 18,000 feet (5,500 m) - Marked hypoxemia, hypocapnia, and alkalosis are characteristic of extreme altitudes. Progressive deterioration of physiologic function eventually outstrips acclimatization. As a result, no permanent human habitation occurs above 18,000 ft. A period of acclimatization is necessary when ascending to extreme altitude; abrupt ascent without supplemental oxygen for other than brief exposures invites severe altitude sickness.

Primary symptoms

Headaches are the primary symptom used to diagnose altitude sickness, although a headache is also a symptom of dehydration. A headache occurring at an altitude above 2,400 metres (8,000 feet = 76 kPa), combined with any one or more of the following symptoms, may indicate altitude sickness:

Lack of appetite, nausea, or vomiting
Fatigue or weakness
Dizziness or lightheadedness
Insomnia
Pins and needles
Shortness of breath upon exertion
Nosebleed
Persistent rapid pulse
Drowsiness
General malaise
Peripheral edema (swelling of hands, feet, and face).

Severe symptoms

Symptoms that may indicate life-threatening altitude sickness include:
Pulmonary edema (fluid in the lungs)
Symptoms similar to bronchitis
Persistent dry cough
Fever
Shortness of breath even when resting
Cerebral edema (swelling of the brain)
Headache that does not respond to analgesics
Unsteady gait
Gradual loss of consciousness
Increased nausea
Retinal hemorrhage

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Testimonials

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John Hunter Smith   Trekking Area: Everest Region. Trek to Everest Base camp/ Gokyo lakes was fantastic Ganesh was... Read more
Hannah Ratcliffe and James Westby Trekking Area: Chisapani _NagarkotThe first day was hard, uphill from Kathmandu to Chissapani.... Read more
Daniel Yu Trekking Area: Langtang &Frozen lake ,I did a 10 day trek with guide –Bharat into Lang tang.... Read more
Don Henderson Name of Guest: Don HendersonAge: 71Trek: - Chisapani Nagarkot (2/3 days)Address:-Albuquerque, New... Read more
Adam Clark Name of the Guest: Adam ClarkNationality: AustralianTrekking Area: Annapurna round.It was a... Read more
Hannah Ratcliffe Hannah Ratcliffe and James Westby British Chisapani _NagarkotThe first day was hard, uphill from... Read more
Julie Defranox   Name of the client:-Julie Defranox Home: French, Resident in Dublin, Ireland Trekking... Read more
Linda Clapinski Name of the Clients :-Linda Clapinski & Jinny Travers Address:-Geelong Australia Trekkin... Read more
Iker Navarrd Name of The Guest:-Iker Navarrd ZarraneSpain mail: This email address is being protected from... Read more
Sven Mareau Name of the guest :-Sven MareauFrench Email I .d  Read more
Boehm Christian Name of the guest :-Austria Email I .d  Read more
Stephen Name of The guest: - Stephen Dautel Nationality:-German /Deutsch Read more

Wildlife Safari

You will be going into deep jungle on elephant back or four-wheel drive vehicle to view wild animals in their natural habitat.  Read more................ 

Hiking in Nepal

Nepal is the home to world's highest and most beautiful mountains and some of the best trekking trails on the earth. Mt Everest, 8848 m and eight out of world's Read more................ 

White Water Rafting

MoreAct

White water rafting is a special venture in the river on an inflatable rubber boat. A river trips in usually an adventure but not always.  Read more................

Village tour in Nepal

Sirubari is a small village nestled on the southern slopes of a ridge at 1700m above sea level. The height and aspect ensure a comfortable climate regardless of any season of the year. Read more................

Social Work in Nepal

We can offer our service to provide to you any travel and adventure program in Nepal at a discounted cost for you to promote as a charity trip and raise funds . Read more................

Single female trekkers

You are single women Travelers; you are interest to make your adventures holidays in Nepal, but you do not know  Read more................

WH Treks & Expedition (P) Ltd.

GPO Box : 4738  Thamel, Kathmandu, Nepal
Tel : 977-1-4257660 (Office), 977-9803903224 (Hot line)

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