Results 251 to 260 of about 637,561 (309)
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Seminars in Respiratory and Critical Care Medicine, 2023
AbstractWith ascent to high altitude, barometric pressure declines, leading to a reduction in the partial pressure of oxygen at every point along the oxygen transport chain from the ambient air to tissue mitochondria. This leads, in turn, to a series of changes over varying time frames across multiple organ systems that serve to maintain tissue oxygen ...
Marc Moritz Berger, Andrew M. Luks
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AbstractWith ascent to high altitude, barometric pressure declines, leading to a reduction in the partial pressure of oxygen at every point along the oxygen transport chain from the ambient air to tissue mitochondria. This leads, in turn, to a series of changes over varying time frames across multiple organ systems that serve to maintain tissue oxygen ...
Marc Moritz Berger, Andrew M. Luks
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Current Pain and Headache Reports, 2007
High-altitude headache (HAH) is an important public health problem because many of the millions of visitors to locations high above sea level get significant headaches each year. Headache is the most common symptom of acute exposure to high altitude.
Luiz P, Queiroz, Alan M, Rapoport
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High-altitude headache (HAH) is an important public health problem because many of the millions of visitors to locations high above sea level get significant headaches each year. Headache is the most common symptom of acute exposure to high altitude.
Luiz P, Queiroz, Alan M, Rapoport
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Medical Clinics of North America, 2016
Individuals may seek the advice of medical providers when considering travel to high altitude. This article provides a basic framework for counseling and evaluating such patients. After defining "high altitude" and describing the key environmental features at higher elevations, the physiologic changes that occur at high altitude and how these changes ...
Nicholas J, Johnson, Andrew M, Luks
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Individuals may seek the advice of medical providers when considering travel to high altitude. This article provides a basic framework for counseling and evaluating such patients. After defining "high altitude" and describing the key environmental features at higher elevations, the physiologic changes that occur at high altitude and how these changes ...
Nicholas J, Johnson, Andrew M, Luks
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Archivos de la Sociedad Española de Oftalmología (English Edition), 2012
This case report presents a 36 year-old male with a sudden loss of vision while taking part in an expedition in the Daulaghiri (8,167 metres high peak located in the Himalayan Mountain Range).High altitude retinal haemorrhage is a common condition in those mountaineers who reach altitudes over 5,500m.
N, Pardiñas Barón +4 more
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This case report presents a 36 year-old male with a sudden loss of vision while taking part in an expedition in the Daulaghiri (8,167 metres high peak located in the Himalayan Mountain Range).High altitude retinal haemorrhage is a common condition in those mountaineers who reach altitudes over 5,500m.
N, Pardiñas Barón +4 more
openaire +2 more sources
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
openaire +3 more sources
Emergency Medicine Clinics of North America, 1997
This article discusses prevention, recognition, and treatment of altitude illnesses, especially acute mountain sickness, high-altitude pulmonary edema, and high-altitude cerebral edema. Physicians advising travelers and trekkers who will be visiting high-altitude areas will find an organized approach to giving pretravel advice. Physicians practicing in
K, Zafren, B, Honigman
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This article discusses prevention, recognition, and treatment of altitude illnesses, especially acute mountain sickness, high-altitude pulmonary edema, and high-altitude cerebral edema. Physicians advising travelers and trekkers who will be visiting high-altitude areas will find an organized approach to giving pretravel advice. Physicians practicing in
K, Zafren, B, Honigman
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The Lancet Respiratory Medicine, 2012
Medical problems occur at high altitude because of the low inspired Po(2), which is caused by the reduced barometric pressure. The classical physiological responses to high altitude include hyperventilation, polycythemia, hypoxic pulmonary vasoconstriction-increased intracellular oxidative enzymes, and increased capillary density in muscle.
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Medical problems occur at high altitude because of the low inspired Po(2), which is caused by the reduced barometric pressure. The classical physiological responses to high altitude include hyperventilation, polycythemia, hypoxic pulmonary vasoconstriction-increased intracellular oxidative enzymes, and increased capillary density in muscle.
openaire +3 more sources