At high altitude, marked bilateral leakage of peripheral retinal vessels was observed in 7 of 14 participants (50 percent). All findings completely reversed after descent. "Retinal capillary leakage should be considered a ...
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(HealthDay)—Both sickle cell disease and the condition known as sickle cell trait are genetic blood diseases: You're born with one or the other because of the genes inherited from your parents. Beyond that, the two conditions ...
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For individuals with obstructive sleep apnea traveling to higher altitudes (which may exacerbate symptoms), use of a combination therapy resulted in improvement in symptoms including reduced insomnia and better control of ...
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New magnetic resonance imaging (MRI) research shows that mountain climbers who experience a certain type of high altitude sickness have traces of bleeding in the brain years after the initial incident, according to a study ...
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(Medical Xpress)—George Wehby from the University of Iowa has been conducting a study to discover adverse mental development effects on toddlers and babies due to living at high altitudes. He's found, as ...
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Hiding deep inside the bone marrow are special cells. They wait patiently for the hour of need, at which point these blood forming stem cells can proliferate and differentiate into billions of mature blood ...
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Working on a remote, barren peak in the Bolivian Andes, Ryan Paterson and his fellow emergency room doctors came face-to-face with everything from altitude sickness to appendicitis to complications of sickle ...
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On the centenary of Scott's ill-fated Terra Nova expedition to the South Pole, a study to be presented at the Society for Experimental Biology meeting on Sunday July 1 has shown that Scott's men starved to death because they ...
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In late 1911, British Naval Captain Robert F. Scott led a team of five Englishmen on their quest to be the first to reach the South Pole. Upon arrival they learned they had been preceded by a Norwegian team, led by Roald ...
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Altitude training is a popular technique among athletes preparing for a competition, especially expert runners. Much research has been conducted on how to do it, at what altitude to train, how to modify workouts and how long ...
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(HealthDay) -- People with inflammatory bowel disease, which includes Crohn's disease and colitis, may be at increased risk for flare-ups when they fly or travel to high altitudes for skiing or mountain climbing, ...
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(AP) -- A team of American scientists and researchers flew to the Mount Everest region on Friday to set up a laboratory at the base of the world's highest mountain to study the effects of high altitude on ...
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Working in mice, scientists at Washington University School of Medicine in St. Louis have devised a treatment that prevents the optic nerve injury that occurs in glaucoma, a neurodegenerative disease that is a leading cause ...
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A new study led by Grant Lipman, M.D., an emergency medicine physician at Stanford Hospital & Clinics and a clinical assistant professor at the Stanford University School of Medicine, has found that ibuprofen, a widely available, ...
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(AP) -- Michael Phelps is the latest athlete to use a hyperbaric chamber to aid his recovery from training.
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Altitude or height is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, and more). As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The reference datum also often varies according to the context. Although the term altitude is commonly used to mean the height above sea level of a location, in geography the term elevation is often preferred for this usage.
Vertical distance measurements in the "down" direction are commonly referred to as depth.
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