Doctor insights on:
Does Residence At High Altitude Cause Anemia
Can high altitude cause hypertension or aggravate it if it already exists? If so what causes this?
No, Internal Control: Bp: a result of cardiac output vs. Average resistance of the 20, 000 to 30, 000 end arteries (arterioles) which determine blood flow to each capillary bed, both co ; size of all arterioles (degree of constriction) are under split-second control from brain ; constantly being adjusted. BP is just a momentary result. Brain integrates many variables, including perceptions/feelings ; adjusts accordingly. ...Read more
As one ascends through the atmosphere, every breath contains fewer molecules of oxygen. One must work harder to obtain oxygen, by breathing faster and deeper. The % of oxygen in the atmosphere at sea level is 21%. As altitude increases, the % remains the same but the number of oxygen molecules per breath is reduced. At 12, 000 feet 40% fewer oxygen molecules per breath. Your ...Read more
Hypoxia: When a person goes to high altitude, they are naturally exposed to hypoxia as oxygen content decreases with elevation. Most who climb can to aclimatize to this change. However, in certain people they are not able to compensate. The proton pumps that maintain the blood brain barrier cease to function and there is extra fluid (edema) in the brain that leads to brain swelling. This can lead to death. ...Read more
Diagnosed with polycythemia vera without mutation in JAK2. What else might be the cause? Do not smoke and do not live in high altitude.
Interesting question: Do you have polycythemia rubra vera or polycythemia which is assosciated with stress? Have you had a bone marrow examination. Do you have an hemoglobinopathy? Glad you do not smoke and glad you do not live in high altitudes, because these increase blood counts. Are you an athlete. Do you have any hormonal questions too much testosterone? Please see an hematologist to clarify. ...Read more
Unknown: Studies are in progress. Some illnesses act differently making this tough to gauge. Asthma may be better due to less pollutants up high. Altitude makes immune systems slightly less strong and can delay wound healing. High blood pressure can be a bit harder to control but not always--is it because the medicines are less effective or the altitude impacts the body? Still being sorted out. ...Read more
Can high altitude cause high blood pressure? My BP was normal at sea level but became very elevated when i lived at 6000' no changes to lifestyle.
Low neutrphils, high lymphocytes, high eosinophils, high basophils. Could it be caused by norco, (hydrocodone and acetaminophen) high altitude, or viral?
Could be viral: Although usually you have high neutrophils. Narcotics don't have any effect on eosinophils. Your numbers as you report them are unusual enough, that you shoudl definitely talk to your doctor. ...Read more
Many changes: 1. You breath faster to compensate for the thinned density of oxygen. 2 body makes more oxygen carrying red cells at altitude 3. Kidneys put out more bicarbonate (sodium bicarbonate) to keep your acid base state adjusted. Your rapid breathing blows off carbon dioxide and your kidneys adjust for this change but it takes a few days to body to alter. There are medicines to speed this acclimatization. ...Read more
Not well studied: Very likely. The particular risks for children to high altitude have not been thoroughly studied. Children born ; living at altitude to have normal risk for high altitude pulmonary edema but there may be some increased risk for this condition if a child then travels down to lowland ; then re-enters high altitude. Very small older studies are suggestive but reasons are not clear.New info pending. ...Read more
Varies: Often unchanged, sometimes hypertension temporarily worsens for the 1st 1-2 weeks at altitude and then returns to normal. We guess this is related to stress hormones or unknown cause and more often in those with unstable pressure to begin with. In rare situations, it may drop. Stay on your medicine, cautious with salt,, & get seen if headache, chest pain, short of breath, or concerns beyond that. ...Read more
It depends: Some symptoms may be similar such as irritability , confusion, fatigue, headaches. ...Read more
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