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
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
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
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
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
Is it safe to take a healthy 7 month old baby to high altitude, specifically Cusco, Peru (11, 000 ft.)?
Safe?: Possible, but why take the chance!Get a more detailed answer ›
Depends: This is a difficult one to answer. The changes that may occur at high altitude, such as relatively less oxygen may lead to increased heart rates, especially with exertion, and that is an undesirable effect. However, more details are needed: location of the aneurysm? Size and the etiology of the aneurysm? M how far above sea level is your location? What would be a rate of ascent? ...Read more
Yes, however:: At altitude above 4300 meters, there are certainly reports of retinal hemorrhage but it can be difficult to exclude other causes.High altitude retinopathy (harh) is seen in up to 29% of everest climbers above 5300 meters. There seems to be an association with altitude sickness raising questions whether slow ascent ; other factors may reduce risk for bleeding in the small vessels of the eye. ...Read more
It's possible...: ... But other causes should be ruled out. Retinal hemorrhages are more often caused by uncontrolled hypertension or diabetes, as well as occasional association with bad floaters. The decreased pressure from high altitude has been known to rupture small blood vessels on the white of the eye as well. Have your eye doctor examine you carefully. ...Read more
Spaced out Air!: 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 body has to cope! ...Read more
1.Your bone marrow will makes more oxygen carrying red cells at altitude
2.The body produces more of a particular enzyme which increases release of oxygen from hemoglobin to the body tissues
3.Your kidneys adjust the acid base state of your body by changing amount bicarbonate (sodium bicarbonate) excreted.
4. Pulmonary capillary pressure increases, forcing parts of the lung to work that are dormant at sea level. ...Read more
Pacemakers: The function of a pacemaker is not affected by long distance flights or altitude. The patient's underlying disease process depending on what it is, could however be affected by either. ...Read more
Water and cardio: It is important to drink more water. Also, doing cardiovascular exercises can help aclimate you to the new environment sooner. I'm presuming that we are discussing places like colorado or similar mountain areas which are typically a mile above sea level. For extreme high altitudes, such as himalayan mountains, there are significant dangers from altitude and that is a more complicated answer. ...Read more
What do YOU mean by: "well controlled"? Asthma in america study reveals that most patients rating their asthma well controlled are not in control by the standards of allergists & pulmonologists. A simple yardstick is the rule of twos. Asthma is in control when albuterol use <3x/week & waking up at night from asthma <3x/month & exacerbation of asthma requiring Prednisone or er visit <2x/year. Pass & you're good to go. ...Read more
What could it be to have high hemoglobin? No smoke, no live on high altitude, no kidney issues. Please help!
P vera is rare ; genetic. Be sure you are talking about truly high number.
Other causes are sleep apnea, lung disease, non smoking chronic carbon monoxide exposure, liver disease, kidney cysts or obstruction that may be unknown, adrenal causes, very rare tumors that put out EPO (which tell the body to make more hemoglobin) no need to guess though--your provider will be able to sort it out for you. ...Read more
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