Posted on June 11, 2016
Insome persons, the hypoxia of high altitude causes constriction of someof the blood vessels in the lungs, shunting all ofthe blood througha limited number of vessels that are not constricted. This dramaticallyelevates the blood pressure in thesevessels and results in a high-pressureleak of fluid from the blood vessels into the lungs. Exertion and coldexposure canalso raise the pulmonary blood pressure and may contributeto either the onset or worsening of HAPE.. Acetazolamide montagna.
Themainstay of treatment of AMS is rest, fluids, and mild analgesics: acetaminophen(paracetamol), aspirin, or ibuprofen.These medications will not coverup worsening symptoms. The natural progression for AMS is to get better,and often simplyresting at the altitude at which you became ill isadequate treatment. Improvement usually occurs in one or two days, butmaytake as long as three or four days. Descent is also an option, andrecovery will be quite rapid..
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All of these symptoms mayvary from mild to severe. A scoring system has been developed basedon the Lake Louise criteria;look at the AMSquestionnaire for a simple method to evaluate an individual's AMSseverity..
Può aumentare la sensibilità al sole. Evitare l'esposizione al sole. In caso di esposizione al sole, indossare indumenti che coprano gambe e braccia ecospargersi di crema solare. Evitare lampade e docce solari.. Acetazolamide montagna senza ricetta.
Il mal di montagna acuto una condizione molto frequente tra i trekkers. Se non sei allergico, il medico potr prescriverti l acetazolamide (Diamox).
Altri effetti indesiderati, che non richiedono l’immediata assistenza del medico, da riportare in caso di prolungato fastidio:..
This simply cannotbe emphasized too much. If you have symptomsof AMS, DO NOT ASCEND ANY HIGHER. Violating this simple rulehas resulted in many tragic deaths.. Acetazolamide montagna.
Itis common for persons with severe HAPE to also develop HACE, presumablydue to the extremely low levels of oxygen in theirblood (equivalentto a continued rapid ascent)..
Acetazolamide montagna As one ascendsthrough the atmosphere, barometric pressure decreases (though the airstill contains 21% oxygen) and thus everybreath contains fewer andfewer molecules of oxygen. One must work harder to obtain oxygen, bybreathing faster and deeper.This is particularly noticeable with exertion,such as walking uphill. Being out of breath with exertion is normal,as long asthe sensation of shortness of breath resolves rapidly withrest. The increase in breathing is critical. It is therefore importantto avoid anything that will decrease breathing, e.g. alcohol and certaindrugs. Despite the increased breathing,attainingnormal blood levels of oxygen is not possible at high altitude.. acetazolamide alcalosi metabolica.
It is remarkable how manypeople mistakenly believe that a headache at altitude is "normal";it is not. Denial isalso common - be willing to admit that you havealtitude illness, that's the first step to staying out of trouble..
In the first twocases waiting a few moments will establish a normal breathing pattern.In the final case, the sleepingneighbor will eventually take a breath,though periodic breathing cycles will likely continue until he or sheis awake. Ifperiodic breathing symptoms are troublesome, a medicationcalledacetazolamide may be helpful..
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HAPEusually occurs on the second night after an ascent, and is more frequentin young, fit climbers or trekkers.. Acetazolamide montagna.
There may berebound symptomsif the duration of therapy is inadequate - several hours of treatmentmay be needed. In most high altitudeenviroments, oxygen is a preciouscommodity, and as such is usually reserved for more serious cases ofHACE and HAPE..
Acetazolamide montagna The key to avoidingAMS is a gradual ascent that gives your body time to acclimatize. Peopleacclimatize at different rates,so no absolute statements are possible,but in general, the following recommendations will keep most peoplefrom getting AMS:.. acetazolamide diuretico tiazidico.
Dramatic changestake place in the body's chemistry and fluid balance during acclimatization.The osmotic center, whichdetects the "concentration" of the blood,gets reset so that the blood is more concentrated. This results in analtitudediuresis as the kidneys excrete more fluid. The reasonfor this reset is not understood, though it has the effect of increasing the hematocrit (concentration of red blood cells) and perhaps improvingthe blood's oxygen-carrying ability somewhat; it also counteractsthetendency for edema formation. It is normal at altitude to be urinatingmore than usual. If you are not, you may bedehydrated, or you may notbe acclimatizing well..
Ifyou hire your own porters, please be aware that they are justas susceptible as you to the ravages of AMS.Porters may evenbe at increased risk of severe forms of altitude illness as theyare unlikely to know anythingabout AMS, are more likely to havea communication barrier to telling you how they feel, and mayactively hidetheir symptoms as they fear losing their job dueto illness. For those of you who will be trekking in Nepal, please look at theAMS questionnairewith phonetic Nepali translations (based on the Lake LouiseAMS scoring criteria)..
Remember,it's how high you sleep each night that really counts; climbers haveunderstood this for years, and have a maxim"climb high, sleeplow".. Acetazolamide montagna.
AMS is a spectrumof illness, from mild to life-threatening. At the "severely ill" endof this spectrum is High AltitudeCerebral Edema; this is when the brainswells and ceases to function properly. HACE can progress rapidly, andcan be fatal ina matter of a few hours to one or two days. Personswith this illness are often confused, and may not recognize that theyareill.. acetazolamide montagna senza ricetta
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Draw a straight line on the ground, and have themwalk along the line, placing one foot immediately in front of the other,so that the heel of the forward foot is right in front ofthe toes behind.Try this yourself. You should be able to do it without difficulty. Ifthey struggle to stay on the line (thehigh-wire balancing act), can'tstay on it, fall down, or can't even stand up without assistance,they fail the test andshould be presumed to have HACE. (Theformal diagnostic definition is here)..
acetazolamide farmacocinetica Acute Mountain Sickness(AMS) is a constellation of symptoms that represents your body not beingacclimatized to it's currentaltitude.. acetazolamide montagna senza ricetta.
Acetazolamide(Diamox®) is a medication that forces the kidneys to excrete bicarbonate,the base form of carbon dioxide; thisre-acidifies the blood, balancingthe effects of the hyperventilation that occurs at altitude in an attemptto get oxygen.This re-acidification acts as a respiratory stimulant,particularly at night, reducing or eliminating the periodic breathingpattern common at altitude. Its net effect is to accelerate acclimatization.Acetazolamide isn't a magic bullet, cure of AMS is notimmediate. Itmakes a process that might normally take about 24-48 hours speed upto about 12-24 hours..
Treatmentin a portable hyperbaric bag (see physician'ssection for details) is essentially equivalent to descent or treatmentwith oxygen; the person is inside a pressurized bag breathing an atmosphereequivalent to a much lower altitude. AMS symptomsrapidly resolve (minutes),but may recurr if treatment is too short - at least two hours are needed.Dexamethasone works aswell, though not quite as fast, is much cheaper,and far less labor-intensive than hyperbaric therapy. Hyperbaric treatmentisusually reserved for more serious cases such as HACE and HAPE.. acetazolamide montagna senza ricetta.
Acclimatizationis the process of the body adjusting to the decreased availability ofoxygen at high altitudes. It is a slowprocess, taking place over aperiod of days to weeks..
acetazolamide antiepilettico The day hikes to higher elevations that you take on your"rest days" (whenyou spend a second night at the same altitude)help your acclimatization by exposing you to higher elevations, thenyoureturn to a lower (safer) elevation to sleep. This second nightalso ensures that you are fully acclimatized and ready for furtherascent.. acetazolamide chiari malformation, acetazolamide acidosi metabolica, acetazolamide e acidosi metabolica.