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In the United States military, modafinil has been approved for use on certain Air Force missions, and it is being investigated for other uses. [19] As of November 2012, modafinil is the only drug approved by the Air Force as a "go pill" for fatigue management. [20] The use of dextroamphetamine (a.k.a., Dexedrine) is no longer approved. [20] Yes ...
A go pill generally contains one of the following drugs: Amphetamine ( methamphetamine having been used historically, such as during the Second World War ), which is a strong psychostimulant drug; no longer approved officially for use by the U.S. Air Force , [ 2 ] possibly due to safety concerns brought up in the wake of incidents like the ...
The concentration of oxygen (O 2) in sea-level air is 20.9%, so the partial pressure of O 2 (pO 2) is 21.136 kilopascals (158.53 mmHg). In healthy individuals, this saturates hemoglobin, the oxygen-binding red pigment in red blood cells. [8]
Continued low oxygen levels may lead to respiratory or cardiac arrest. Oxygen therapy may be used to assist in raising blood oxygen levels. Oxygenation occurs when oxygen molecules (O 2) enter the tissues of the body. For example, blood is oxygenated in the lungs, where oxygen molecules travel from the air and into the blood. Oxygenation is ...
One of the more frequently used treatment schedules is the US Navy Table 6, which provides hyperbaric oxygen therapy with a maximum pressure equivalent to 60 feet (18 m) of seawater (2.8 bar P O 2) for a total time under pressure of 288 minutes, of which 240 minutes are on oxygen and the balance are air breaks to minimise the possibility of ...
Narcosis results from breathing gases under elevated pressure, and may be classified by the principal gas involved. The noble gases, except helium and probably neon, [2] as well as nitrogen, oxygen and hydrogen cause a decrement in mental function, but their effect on psychomotor function (processes affecting the coordination of sensory or cognitive processes and motor activity) varies widely.
The concentration of the anesthetic in blood includes the portion that is undissolved in plasma and the portion that is dissolved (bound to plasma proteins). The more soluble the inhaled anesthetic is in blood compared to in air, the more it binds to plasma proteins in the blood and the higher the blood–gas partition coefficient.
[1] [23] The ability to combine N 2 O and oxygen at high pressure while remaining in the gaseous form is caused by the Poynting effect (after John Henry Poynting, an English physicist). [1] The Poynting effect involves the dissolution of gaseous O 2 when bubbled through liquid N 2 O, with vaporisation of the liquid to form a gaseous O 2 /N 2 O ...