Flight Physiology And Aviation Standards Flashcards
Media
Pleural of medium
Baroitis
Aerotitis- inflammation of the ear, esp the middle ear due to failure of the Eustachian tube to remain open during sudden changes in barometric pressure, as may occur during flying, diving, or working in a pressure chamber. Rupture of the tympanic membrane may occur.
Barotitis media typically occurs upon
Descent
Barobariatrauma is best prevented by
Pre-oxygenation
Barobariatrauma
Baro -Combining forms meaning weight or pressure.
Caused by a sudden/lg release of N from the adipose tissues of the body upon decompression. In the very obese pt, the combo of excess N stores in addition to decreased functional residual capacity & tidal volumes lead to an inability to remove the N fast enough.
How is partial pressure calculated?
“Partial pressure is calculated by multiplying the given gas concentration by the total pressure present.”
“During ascent you note increased sporadic bubbling in a patient’s chest tube drainage system. This may demonstrate;”
Boyle’s law
“Based on the assumption the chest tube was placed for a pneumothorax, it would stand to reason that a residual pneumothorax is attempting to expand with the climb in altitude (Boyle’s Law) and thus some air is escaping via the chest tube.”
MSL
Mean sea level - elevation above sea level
AGL
Above ground level - “refers to the elevation above the ground directly below the aircraft.”
“The emergency locator transmitter frequency is”
121.5
“You should anticipate a greater change in atmospheric pressure per altitude change when flying”
Near the North Pole
“Charles’s Law states that as you increase the temperature of a gas you should anticipate”
A volume increase
“Gay-Lussac’s Law most closely resembles”
Charles’s law
“The release of gas exhibited when opening a carbonated drink is a clear demonstration of which gas law?”
Henry’s law
Explain Boyle’s law
If the volume is halved, the pressure is doubled; if the volume is doubled, the pressure is halved.
Gas is made up of loosely spaced milecules moving at random. If a gas is compressed in a container, these molecules are pushed together; thus, the gas occupies less volume. The molecules, having less space in which to move, hit the walls of the container more frequently and thus exert an increased pressure.
