Pediatric emergency medicine trisk 0338 0338
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FIGURE 11.11 A: Dalton law (law of partial pressure): (PT = P1 + P2 + P3 …). The total
pressure of a gas is the sum of its component gases. The diagram illustrates that the percentages
of air components (oxygen illustrated and represents 21% of air) at different altitudes does not
change, although air is less dense at a higher altitude. B: The effects of altitude and decreased
barometric pressure on oxygen availability. (From Woodward GA, Vernon DD. Aviation
physiology in pediatric transport. In: Jaimovich DG, Vidyasagar D, eds. Pediatric and Neonatal
Transport Medicine . Philadelphia, PA: Hanley and Belfus, Inc; 1995:41, with permission.)
Other issues to be considered in air transport include vibration, turbulence,
noise, humidity, temperature, air sickness, exhaust fumes, specific aircraft
