Results 271 to 280 of about 182,191 (313)
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Cardiology, 2008
<i>Objective:</i> To investigate the cause and nature of palpitations occurring at high altitude. <i>Methods:</i> Implantable loop recorders were inserted subcutaneously in the left pectoral region of 9 healthy male volunteers.
Woods, D.R. +6 more
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<i>Objective:</i> To investigate the cause and nature of palpitations occurring at high altitude. <i>Methods:</i> Implantable loop recorders were inserted subcutaneously in the left pectoral region of 9 healthy male volunteers.
Woods, D.R. +6 more
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Wilderness & Environmental Medicine, 1999
The sport of high-altitude climbing encompasses a number of factors of stress that supersede the usual endurance activities at lower altitudes. The effect of hypoxia on both physical and mental performance can be profound and, therefore, compound the risk. Much is yet to be known, particularly about the brain.
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The sport of high-altitude climbing encompasses a number of factors of stress that supersede the usual endurance activities at lower altitudes. The effect of hypoxia on both physical and mental performance can be profound and, therefore, compound the risk. Much is yet to be known, particularly about the brain.
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JAMA: The Journal of the American Medical Association, 1977
To the Editor.— I read Dr Houston's discussion on high altitude sickness (236:2193, 1976) with a great deal of interest. It has always occurred to me whenever reading articles about high altitude sickness that the clue to the origin of this condition lies in its name—altitude (that is, diminished barometric pressure). Human beings living at sea level
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To the Editor.— I read Dr Houston's discussion on high altitude sickness (236:2193, 1976) with a great deal of interest. It has always occurred to me whenever reading articles about high altitude sickness that the clue to the origin of this condition lies in its name—altitude (that is, diminished barometric pressure). Human beings living at sea level
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High Altitude Medicine & Biology, 2003
The influence of oxygen pressure on placental and villous vascular development is reviewed and considered relative to the natural experiment afforded by residence at high altitude. Data obtained from normal high altitude pregnancies are compared with those from IUGR and preeclampsia, conditions believed to be caused by placental hypoxia.
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The influence of oxygen pressure on placental and villous vascular development is reviewed and considered relative to the natural experiment afforded by residence at high altitude. Data obtained from normal high altitude pregnancies are compared with those from IUGR and preeclampsia, conditions believed to be caused by placental hypoxia.
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Proceedings of the Royal Society of London. Series B - Biological Sciences, 1954
Abstract High altitude deterioration means a gradual diminution in man’s capacity to do work at great heights. This is associated with insomnia, lack of appetite, loss of weight and increasing lethargy. These symptoms appear after a prolonged stay above 18000 ft. and there is great individual variation.
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Abstract High altitude deterioration means a gradual diminution in man’s capacity to do work at great heights. This is associated with insomnia, lack of appetite, loss of weight and increasing lethargy. These symptoms appear after a prolonged stay above 18000 ft. and there is great individual variation.
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JAMA: The Journal of the American Medical Association, 1978
To the Editor.— In regard to the question on pitting leg edema after a backpacking trip (238:1957, 1977), it would be important to know if the physician experienced edema during or after a backpacking trip to an altitude exceeding 2,400 m. Many hikers experience moderate facial and lower extremity edema during exposure to high altitude with a diuresis
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To the Editor.— In regard to the question on pitting leg edema after a backpacking trip (238:1957, 1977), it would be important to know if the physician experienced edema during or after a backpacking trip to an altitude exceeding 2,400 m. Many hikers experience moderate facial and lower extremity edema during exposure to high altitude with a diuresis
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High Altitude Medicine & Biology, 1985
New arrivals to altitude commonly experience poor-quality sleep. These complaints are associated with increased fragmentation of sleep by frequent brief arousals, which are in turn linked to periodic breathing. Changes in sleep architecture include a shift toward lighter sleep stages, with marked decrements in slow-wave sleep and with variable ...
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New arrivals to altitude commonly experience poor-quality sleep. These complaints are associated with increased fragmentation of sleep by frequent brief arousals, which are in turn linked to periodic breathing. Changes in sleep architecture include a shift toward lighter sleep stages, with marked decrements in slow-wave sleep and with variable ...
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Current Pain and Headache Reports, 2015
High-altitude headache is one of many neurological symptoms associated with the ascent to high altitudes. Cellular hypoxia due to decreased barometric pressure seems to be the common final pathway for headache as altitude increases. Susceptibility to high-altitude headache depends on genetic factors, history of migraine, and acclimatization, but ...
Michael J, Marmura +1 more
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High-altitude headache is one of many neurological symptoms associated with the ascent to high altitudes. Cellular hypoxia due to decreased barometric pressure seems to be the common final pathway for headache as altitude increases. Susceptibility to high-altitude headache depends on genetic factors, history of migraine, and acclimatization, but ...
Michael J, Marmura +1 more
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The Journal of Nutrition, 1992
Food records confirm that there is a high risk of malnutrition at high altitudes because of the usual lack of fresh food. As to the use of pharmacologic properties of micronutrients, only some data on vitamin E are described. Two placebo-controlled studies showed that a prolonged stay at high altitude caused a decrease in physical performance and a ...
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Food records confirm that there is a high risk of malnutrition at high altitudes because of the usual lack of fresh food. As to the use of pharmacologic properties of micronutrients, only some data on vitamin E are described. Two placebo-controlled studies showed that a prolonged stay at high altitude caused a decrease in physical performance and a ...
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Journal of the Royal Army Medical Corps, 2011
Science and mountain exploration are closely linked throughout history. A large array of studies of varying complexity have been performed in conditions of hypobaric hypoxia, some on field studies, some in hypobaric chambers. The military has contributed greatly to this body of evidence both through operations in high altitude regions of the world ...
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Science and mountain exploration are closely linked throughout history. A large array of studies of varying complexity have been performed in conditions of hypobaric hypoxia, some on field studies, some in hypobaric chambers. The military has contributed greatly to this body of evidence both through operations in high altitude regions of the world ...
openaire +2 more sources