High Altitude Medicine and Physiology 5E by John B. West, Robert B. Schoene, Andrew M. Luks, James S.

By John B. West, Robert B. Schoene, Andrew M. Luks, James S. Milledge

A entire replace to this preeminent and obtainable textual content, this 5th version of a bestseller used to be built as a reaction to man's makes an attempt to climb unaided to raised altitudes and to spend extra time in those stipulations for either paintings and activity. It describes the ever-expanding demanding situations that medical professionals face in facing the adjustments in human body structure and specific health conditions that come up from publicity to altitude and cold.

The hugely revered authors of this 5th variation are the world over famous for his or her educational learn within the box, and are all skilled hiking physicians who've handled disorder and injuries in excessive areas. They proceed to supply a textual content that might support physicians to enhance the overall healthiness and protection of every body who stopover at, stay, or paintings in chilly and skinny air stipulations skilled in excessive mountains.

High Altitude medication and Physiology is useful for any health practitioner accompanying an excursion or advising sufferers on a trip to excessive altitudes, physicians focusing on disorder and injuries in excessive areas, and physiologists who research our dependence on oxygen and the difference of the physique to altitude.

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Example text

The pressure of each gas is referred to as its partial pressure. The total pressure is the sum of the partial pressures of all gases present. In symbols: Px = PFx, where Px is the partial pressure of gas x, P is the total pressure and Fx is the fractional concentration of gas x. 5. The fractional concentration always refers to dry gas. The kinetic theory of gases explains their diffusion in the gas phase. indb 19 random motion, gas molecules tend to distribute themselves uniformly throughout any available space until the partial pressure is the same everywhere.

Actual measurements during climbing at extreme altitude would be valuable. There is evidence that the dehydration resulting from these rapid fluid losses does not produce as strong a sensation of thirst as at sea level. 3 Factors other than barometric pressure at high altitude 27 quantities of fluids at high altitude to remain hydrated even though they have little desire to do so. 5 L day−1 (Pugh 1964b). Even so, it appears that people living at very high altitude are in a state of chronic volume depletion (Blume et al.

1 Introduction Most of the medical problems that occur at high altitude are caused by the low partial pressure of oxygen in the atmosphere which in turn is due to the decrease in barometric pressure as altitude increases. The relationship between barometric pressure and altitude is therefore important, especially in regions of the world such as the Andes and Himalayas where large numbers of people reside at high altitude. Recent work has clarified the pressure–altitude relationship with much better accuracy than previously.

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