Useful tips

High Altitude

Travellers to high altitudes, both mountains climbers and trekkers, should be advised of the potential hazard of acute mountain sickness. Even those who are fit run the risk of acute Mountain sickness during rapid ascent to high altitudes if they spend more than half a day above 2,500 metres. A number of studies have shown a correlation between incidence of that disease and altitude: in the Swiss Alps, high altitude sickness have been observed in 9% of climbers at 2,850 meters, 34% at 3,650 metres, and 53% at 4,559 metres.

The occurrence of problems is depended of:

Your physical form. Be in good shape before start climbing.
The speed of the ascent. Avoidance of problems is best achieved by a slow ascent and by maximising the opportunities to acclimatise.
The altitude where you spend the night. By spending the night at a lower altitude than the highest attained during the day is helpful - Climb High Sleep Low¨

Acute Mountain sickness (AMS) is the term used to describe the most common symptoms which include

headache,
nausea,
dizziness,
loss of appetite,
vomiting
insomnia.

If these symptoms are ignored and the affected person continues to ascend, more serious conditions such as:

High Altitude Cerebral
Pulmonary Oedema (HACO & HAPO)

both of which are life threatening can result.

Prevent AMS by:

slow ascent. The difference in altitude between one night camp and the next should not exceed 300 metres
if signs of acute mountain sickness appear, a day of rest must be taken at a lower altitude if possible. If signs persist or increase, the patient must go down at least 500 metres
avoid exhaustion
reduce use of salt
avoid dehydration
Prophylactic acetazolamide has been effective in preventing altitude sickness in susceptible travellers.

High altitude Resource:

Discordant Patterns of Nuclear and Mitochondrial Introgression in Iberian Populations of the European Common Frog (Rana temporaria).

J Hered

Comparative analyses of leaf anatomy of dicotyledonous species in Tibetan and Inner Mongolian grasslands.

Sci China Life Sci

DNA multigene sequencing of topotypic specimens of the fascioliasis vector Lymnaea diaphana and phylogenetic analysis of the genus Pectinidens (Gastropoda).

Mem Inst Oswaldo Cruz

[Integrated assessment of eco-environmental vulnerability in Pearl River Delta based on RS and GIS].

Ying Yong Sheng Tai Xue Bao

Acute ischaemic stroke during short-term travel to high altitude.

Hong Kong Med J

Decreased Kidney Function Among Agricultural Workers in El Salvador.

Am J Kidney Dis

Nitric oxide in adaptation to altitude.

Free Radic Biol Med

The Aouda.X Space Suit Simulator and Its Applications to Astrobiology.

Astrobiology

Hypoxic pulmonary vasoconstriction.

Physiol Rev

Effects of fasudil in patients with high-altitude pulmonary hypertension.

Eur Respir J

[Effect of oxidative stress in development of acute high altitude response during the process of strong physical work at high altitude].

Zhongguo Ying Yong Sheng Li Xue Za Zhi

Wolbachia-mediated male killing is associated with defective chromatin remodeling.

PLoS One

Changes in Cardiac Autonomic Activity During a Passive 8 Hour Acute Exposure to 5 500 m Normobaric Hypoxia are not Related to the Development of Acute Mountain Sickness.

Int J Sports Med

Chronic hypoxia exposure during pregnancy is associated with a decreased active nursing activity in mother and an abnormal birth weight and postnatal growth in offspring of rats.

Horm Behav

Fasciola hepatica phenotypic characterization in Andean human endemic areas: Valley versus altiplanic patterns analysed in liver flukes from sheep from Cajamarca and Mantaro, Peru.

Infect Genet Evol

Metabolic Characterization of cold active Pseudomonas, Arthrobacter, Bacillus, and Flavobacterium spp. from Western Himalayas.

Indian J Microbiol

The role of nitrogen deposition in the recent nitrate decline in lakes and rivers in Northern Italy.

Sci Total Environ

Molecular characterization of a mosaic locus in the genome of 'Candidatus Liberibacter asiaticus'

BMC Microbiol

Athyrium distentifolium used for bioindication at different altitudes in the Tatra National Park (South Poland).

Ecotoxicol Environ Saf

Aromatase Activity After a Short-course of Letrozole Administration in Adult Men at Sea Level and at High Altitude (with or without Excessive Erythrocytosis).

Horm Metab Res

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