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Topic: Altitude sickness

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	INCA TRAIL - Inca Trail health, Altitude Sickness - INKA TRAIL PERU
		Also known as acute height sickness, it is a consequence of lack of sufficient oxygen.
		If the visitor has the time and is able to spend the first nights in the Sacred Valley, he (or she) will be less prone to suffer from altitude sickness.
		Another efficient way to counteract altitude sickness is to take 4mg of Dexametasone every six hours always starting 48 hours before the ascension and during the stay at high altitudes.
	www.enjoy-inca-trail.com /inca-trail-health.php (659 words)

	CIGNA - Altitude Sickness (Site not responding. Last check: 2007-10-16)
		Altitude sickness occurs when you cannot get enough oxygen from the air at high altitudes.
		You may be able to prevent altitude sickness by taking your time when you go to high altitudes, using medicine in advance, and eating certain foods.
		Talk with your doctor about altitude sickness if you have long-term diseases, especially heart problems, sickle cell anemia, chronic obstructive pulmonary disease, or sleep apnea.
	www.cigna.com /healthinfo/ug3357.html (1071 words)

	Altitude sickness Summary
		Altitude sickness is a general term encompassing several disorders that occur high altitudes.
		Altitude sickness, also known as acute mountain sickness (AMS) or altitude illness is a pathological condition that is caused by lack of adaptation to high altitudes.
		Altitude acclimatization is the process of adjusting to decreasing oxygen levels at higher elevations, in order to avoid altitude sickness.
	www.bookrags.com /Altitude_sickness (1640 words)

	OA Guide to High Altitude: Acclimatization and Illnesses
		High altitude-we all enjoy that tremendous view from a high summit, but there are risks in going to high altitude, and it's important to understand these risks.
		If you have been at that altitude before with no problem, you can probably return to that altitude without problems as long as you are properly acclimatized.
		As altitude increases, the concentration remains the same but the number of oxygen molecules per breath is reduced.
	www.princeton.edu /~oa/safety/altitude.html (2783 words)

	NHS Direct - Health encyclopaedia -Altitude sickness
		Altitude sickness (also known as acute mountain sickness) can occur in its mildest form at around 2500m (8000ft) above sea level (common ski resort height), but is more likely to occur, and to be more severe, at higher altitudes of 3500m (11000ft)and above.
		The onset and severity of symptoms, and the altitude at which they are experienced, vary according to the individual, the rate of ascent, and the amount of time spent at high altitude.
		Diagnosis of altitude sickness is based on headache, combined with one or more other symptoms (presuming there is no other likely cause and you have ascended to a height of at least 2500m).
	www.nhsdirect.nhs.uk /en.aspx?printPage=1&articleId=13 (1141 words)

	MD Travel Health - altitude sickness - symptoms, prevention, and treatment
		Altitude sickness may develop in travelers who ascend rapidly to altitudes greater than 2500 m, including those in previously excellent health.
		Altitude sickness may be prevented by taking acetazolamide 125 or 250 mg two or three times daily starting 24 hours before ascent and continuing for 48 hours after arrival at altitude.
		Travel to high altitudes is generally not recommended for those with a history of heart disease, lung disease, or sickle cell disease.
	www.mdtravelhealth.com /illness/altitude_sickness.html (553 words)

	HIGH ALTITUDE SICKNESS (Site not responding. Last check: 2007-10-16)
		On arrival at altitude, there are a number of physiological changes that occur, which enable the body to function optimally in the low oxygen environment.
		Altitude research examining different physiological parameters is conducted on expeditions, or by simulation either in decompression chambers or by breathing in air from bags that contain less oxygen.
		At altitude, there is an increase in blood flow to the brain, which causes the blood vessels to dilate and increase blood pressure.
	www.mountaineering.ie /features/general/highaltitude.htm (1967 words)

	Altitude sickness - Wikipedia, the free encyclopedia
		Altitude sickness, also known as acute mountain sickness (AMS) or altitude illness is a pathological condition that is caused by acute exposure to high altitudes.
		High altitude pulmonary edema (HAPE) and cerebral edema (HACE) are the most ominous of these symptoms, while acute mountain sickness, retinal haemorrhages, and peripheral edema are the milder forms of the disease.
		Headache is a primary symptom used to diagnose altitude sickness, although headache is also a symptom of dehydration.
	en.wikipedia.org /wiki/Altitude_sickness (1107 words)

	Altitude sickness
		Altitude sickness is the name given to the physiological and symptomatic reactions of the human body to the low oxygen pressure ('thinner' air) that occurs at high altitude.
		The incidence of altitude sickness, which varies from one individual to another, is directly related to the rate of ascent.
		Altitude sickness is not dependent on a person's fitness and can affect even the most experienced athletes.
	www.netdoctor.co.uk /travel/diseases/altitude_sickness.htm (1229 words)

	Altitude Sickness \| AHealthyMe.com
		Altitude sickness is a general term encompassing a spectrum of disorders that occur at higher altitudes.
		High altitude is defined as height greater than 8,000 feet (2,438m); medium altitude is defined as height between 5,000 and 8,000 feet (1,524-2,438m); and extreme altitude is defined as height greater than 19,000 feet (5,791 m).
		The diagnosis for altitude sickness may be made from the observation of the individual's symptoms during travel to higher altitudes.
	www.ahealthyme.com /topic/topic13676 (1194 words)

	Sports Medicine Advisor 2006.2: Altitude Sickness
		Altitude sickness is a problem that can occur when you travel to a high altitude, usually over 8,000 feet above sea level.
		The most important treatment for altitude sickness is to return to a lower elevation.
		For example, if you are at an altitude of 8,000 to 9,000 feet, you may need to travel down to an elevation of 5,000 feet or lower to help your symptoms go away.
	www.med.umich.edu /1libr/sma/sma_altsick_sma.htm (698 words)

	BBC - Health - Conditions - Altitude sickness
		Altitude sickness is becoming a common problem as an increasing number of people are travelling further and going on activity holidays.
		As altitude increases, the percentage of oxygen in the air remains constant but the pressure decreases, meaning we breathe in fewer oxygen molecules with each breath.
		When altitude sickness occurs because the body is not getting enough oxygen, tiredness, headache, nausea and unsteadiness may follow.
	www.bbc.co.uk /health/conditions/altitude1.shtml (583 words)

	Altitude Sickness
		Altitude sickness occurs when people go to a higher altitude too quickly and do not get enough oxygen in the air they breathe.
		You may be able to prevent altitude sickness by taking your time when you go to high altitudes, using medicine in advance, and eating certain foods.
		Talk with your doctor about altitude sickness if you have long-term diseases, especially heart problems, sickle cell anemia, chronic obstructive pulmonary disease, or sleep apnea.
	www.oxygenpartybar.com /AltitudeSickness.htm (1125 words)

	Altitude Sickness Symptoms by MedicineNet.com
		People living at lower altitudes who enjoy a winter ski vacation may be at risk for acute altitude sickness (acute mountain sickness), the most common of the so-called altitude diseases.
		Acute altitude sickness occurs in up to 50% of those living in the lowlands who ascend to a level of 14,000 feet (4200 m).
		Acute altitude sickness is usually not a serious condition, and it resolves on its own with rest and over-the-counter analgesics for pain control.
	www.medicinenet.com /script/main/art.asp?articlekey=57018 (385 words)

	Altitude sickness definition - Medical Dictionary definitions of popular medical terms
		Altitude sickness: Altitude sickness (or altitude illness) is a disorder caused by being at high altitude.
		The cause of altitude illness is a matter of oxygen physiology.
		In addition, high altitude and lower air pressure cause fluid to leak from the capillaries which can cause fluid build-up in both the lungs and the brain.
	www.medterms.com /script/main/art.asp?articlekey=8584 (737 words)

	The Himalayas - Nepal Himalayas - High Altitude Sickness
		Commonly known as altitude sickness, the condition is caused by climbing too quickly to a higher altitude.
		According to experienced trekkers, at high altitudes halts for acclimatization should be taken at every increase of 2000 to 4000 ft altitude.
		High altitude sickness can become fatal if it is not attended promptly and carefully.
	library.thinkquest.org /10131/nepal_sickness.html (627 words)

	NREL: Visiting NREL - Altitude Information
		Altitude illness is caused by the lack of oxygen in our thin mountain air.
		Acute Mountain Sickness is a mild form of altitude sickness that effects 20% to 30% of visitors to Colorado.
		The incidence and severity of A.M.S. are related to altitude, speed of ascent, physical exertion, and prior acclimatization.
	www.nrel.gov /visiting_nrel/golden_altitude.html (432 words)

	Altitude sickness - Wikitravel
		Altitude sickness is a reaction to the lower amounts of oxygen available at high altitudes (due to the lower air pressure).
		Altitude sickness is very dangerous for four reasons: its rapid progression; its deadliness; the fact sufferers are usually some distance from medical help and are difficult to evacuate swiftly; and the fact that in many cases sufferers are reliant on their health because they're doing a lot of physical activity in dangerous environments.
		Decompression sickness is brought on by extremely sudden changes in air pressure (effectively an increase in altitude), such as loss of cabin pressure in a plane you are flying in.
	wikitravel.org /en/Altitude_sickness (2895 words)

	Altitude - Wikipedia, the free encyclopedia
		Altitude is the elevation of an object from a known level or datum.
		Pressure altitude divided by 100 feet is referred to as the flight level; so when the altimeter reads 18,000 ft on the standard pressure setting the aircraft is said to be at "Flight level 180".
		Density altitude is the altitude corrected for non-ISA International Standard Atmosphere (ISA) conditions at which the air density is unequal to ISA conditions.
	en.wikipedia.org /wiki/Altitude (546 words)

	Altitude sickness
		It is important to remember that being young and fit doesn't reduce your risk, and just because you haven't experienced altitude sickness in the past, doesn't mean you are immune to the condition during future climbs.
		There are two main types of severe altitude sickness, including high altitude pulmonary oedema (fluid within the lungs) and high altitude cerebral oedema (fluid within the brain).
		Altitude sickness is caused by ascending too rapidly, which doesn't allow the body enough time to adjust to reduced oxygen and changes in air pressure.
	www.tripdatabase.com /spider.html?itemid=275872 (828 words)

	Altitude Sickness and Atmospheric Pressure (Site not responding. Last check: 2007-10-16)
		Altitude sickness is caused by the lack of oxygen in the air available for breathing.
		Acute Mountain Sickness is a mild form of altitude sickness which effects 20% to 30% of visitors to elevations above 2500m.
		The incidence at altitudes between 2500m and 4500m is between 1% and 10%.
	www-personal.usyd.edu.au /~gerhard/pressure.html (1621 words)

	Altitude sickness (12-24 months)
		Altitude sickness refers to a combination of symptoms that can result when you take in less oxygen than your body is used to, which happens when you travel to a high elevation (8,000 feet or higher).
		Altitude sickness can happen to anyone, regardless of age or fitness level, and some people are simply more susceptible to it than others.
		It's not easy to identify altitude sickness because the symptoms — which usually begin to appear eight to 36 hours after arrival — are pretty nonspecific at first.
	www.babycenter.com /refcap/toddler/toddlerills/11224.html?ccRelLink=&url=%2Frefcap%2Ftoddler%2Ftoddlerills%2F11407.html&xTopic=toddleratoz&bus=content (872 words)

	Non-Physician Altitude Tutorial
		In some persons, the hypoxia of high altitude causes constriction of some of the blood vessels in the lungs, shunting all of the blood through a limited number of vessels that are not constricted.
		Altitude headaches are usually nasty, persistent, and frequently there are other symptoms of AMS; they tend to be frontal (but may be anywhere), and may worsen with bending over.
		Porters may even be at increased risk of severe forms of altitude illness as they are unlikely to know anything about AMS, are more likely to have a communication barrier to telling you how they feel, and may actively hide their symptoms as they fear losing their job due to illness.
	www.ismmed.org /np_altitude_tutorial.htm (3834 words)

	Altitude Sickness
		Altitude sickness is commonly written about as though it is the only negative thing that can happen to you at high altitude.
		Altitude sickness is usually not an issue at heights of less than 12,000 ft. There are exceptions to that though, often involving pre-existing health conditions, or lack of caution in increasing elevation.
		Altitude sickness can cause headache, nausea, vomiting, breathlessness, and can be severe enough to flatten you.
	www.highaltitudelife.com /altitude.htm (676 words)

	Altitude Sickness
		Acute mountain sickness is caused by a lack of oxygen when traveling to higher elevations.
		This usually occurs in individuals exposed to an altitude over 7,000 feet (2,100 m) who have not had a chance to acclimate to the altitude before engaging in physical activities.
		The symptoms of acute mountain sickness can be prevented or minimized by gradually ascending (less than 500 meters/day)over several days to give your body a chance to acclimate to the higher altitude.
	healthlink.mcw.edu /article/907195877.html (314 words)

	:: Nature Trail Travels & Tours, Trekking & Expeditions :: Altitude Sickness
		It is important that trekkers understand that they will be affected to a greater or lesser extent when they ascend to altitudes over about 3000 meters.
		Prophylactic medication should not be required to aid acclimatization unless specifically prescribed by a physician skilled in the treatment and prevention of altitude sickness.
		In the final stages of altitude sickness severe problems start to appear which can rapidly lead to loss of consciousness and death if untreated.
	www.naturetrailnepal.com /aboutus/altitude.php (691 words)

	Altitude Sickness
		Unless you are prepared for the altitude when you climb Mt. Whitney, there is a good chance you will experience some symptoms of altitude sickness.
		Altitude sickness, also called AMS (for Acute Mountain Sickness) can have a serious effect on your ability to hike to the summit.
		twice a day for five days prior to ascent had half the incidence of altitude sickness symptoms, and those who did feel the effects were not as bad.
	userwww.sfsu.edu /~stevec/altitude.htm (794 words)

	Altitude or Mountain Sickness - The Travel Doctor
		As a general rule, it is far safer (and more enjoyable) to avoid altitude sickness by planning a sensible itinerary that allows for gradual acclimatisation to altitude as you ascend, (you can race back down as fast as you like!).
		It is difficult to determine who may be affected by altitude sickness since there are no specific factors such as age, sex, or physical condition that correlate with susceptibility.
		Gradual ascent is always desirable to try to avoid acute mountain sickness but if rapid ascent is undertaken and actazolamide is used, it should be noted that such use does not obviate the need for a prompt descent if severe forms of high altitude sickness occur, i.e.
	www.traveldoctor.co.uk /altitude.htm (2729 words)

	Journey Woman - Journey Doctor - The Air Up There - Altitude Sickness
		However there are also harmful changes that may occur, such as constriction of the pulmonary circulation, and leakage of fluid from the blood vessels of the lungs (high altitude pulmonary edema) and the brain (high altitude cerebral edema).
		he symptoms of altitude sickness will vary, and may depend upon the altitude reached, the time taken to reach that altitude, the time spent at the altitude, the degree of exertion, and individual susceptibility.
		Individuals with a past history of altitude sickness, as well as those who tend to retain fluids and hypoventilate, are also at greater risk.
	www.journeywoman.com /journeydoctor/airupthere.html (791 words)

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